1438 lines
37 KiB
C
Executable File
1438 lines
37 KiB
C
Executable File
/*******************************************************************************/
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/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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/* */
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#include "asm.h"
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#include "math.h"
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#include "video.h"
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#include "stdarg.h"
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#include "string.h"
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#include "VGA/8x8fnt.c"
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#include "VGA/8x16fnt.c"
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/******************************************************************************/
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/* VARIABLES */
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static drivers registred[MAXDRIVERS];
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static font fonts[MAXFONTS];
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static videoinfos *vinfo;
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static width,height;
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static font* currentfont;
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static console vc[8] = {
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{0x07, 0, 0, 0, 0, 0, 0, 0, true} ,
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{0x07, 0, 0, 0, 0, 0, 0, 0, true} ,
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{0x07, 0, 0, 0, 0, 0, 0, 0, true} ,
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{0x07, 0, 0, 0, 0, 0, 0, 0, true} ,
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{0x07, 0, 0, 0, 0, 0, 0, 0, true} ,
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{0x07, 0, 0, 0, 0, 0, 0, 0, true} ,
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{0x07, 0, 0, 0, 0, 0, 0, 0, true} ,
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{0x07, 0, 0, 0, 0, 0, 0, 0, true}
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};
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static u8 usedvc = 0;
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/******************************************************************************/
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/* FONCTIONS CONSOLE */
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/*******************************************************************************/
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/* Fixe l'attribut courant */
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void setattrib(u8 att)
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{
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static const u8 ansitovga[] = {
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0, 4, 2, 6, 1, 5, 3, 7
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};
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u8 tempattr;
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tempattr = vc[usedvc].attrib;
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if (att == 0)
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tempattr = 0x07; /* Couleur Grise sur fond noir */
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else if (att == 5)
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tempattr |= 0x80;
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else if (att == 7)
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tempattr = ((tempattr & 0x0F) << 4) + ((tempattr & 0xF0) >> 4);
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else if (att == 8)
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tempattr = 0;
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else if (att == 1)
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tempattr |= 0x08; /* Forte intensité */
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else if (att >= 30 && att <= 37) {
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att = ansitovga[att - 30];
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tempattr = (tempattr & ~0x07) | att; /* couleur de premier plan */
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} else if (att >= 40 && att <= 47) {
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att = ansitovga[att - 40] << 4;
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tempattr = (tempattr & ~0x70) | att; /* couleur de fond */
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}
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vc[usedvc].attrib = tempattr;
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}
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/*******************************************************************************/
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/* gere l'ansi */
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bool makeansi(u8 c)
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{
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/* state machine to handle the escape sequences */
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switch (vc[usedvc].ansi) {
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case 0:
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/* ESC -- next state */
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if (c == 0x1B) {
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vc[usedvc].ansi++;
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return 1; /* "I handled it" */
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}
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break;
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/* ESC */
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case 1:
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if (c == '[') {
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vc[usedvc].ansi++;
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vc[usedvc].param1 = 0;
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return 1;
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}
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break;
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/* ESC[ */
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case 2:
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if (isdigit(c)) {
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vc[usedvc].param1 = vc[usedvc].param1 * 10 + c - '0';
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return 1;
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} else if (c == ';') {
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vc[usedvc].ansi++;
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vc[usedvc].param2 = 0;
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return 1;
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}
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/* ESC[2J -- efface l'ecran */
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else if (c == 'J') {
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if (vc[usedvc].param1 == 2) {
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fill(vc[usedvc].attrib);
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vc[usedvc].cursX = 0;
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vc[usedvc].cursY = 0;
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cursor_set(0, 0);
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vc[usedvc].ansi = 0;
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return 1;
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}
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}
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/* ESC[num1m -- met l'attribut num1 */
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else if (c == 'm') {
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setattrib(vc[usedvc].param1);
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vc[usedvc].ansi = 0;
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return 1;
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}
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/* ESC[num1A -- bouge le curseur de num1 vers le haut */
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else if (c == 'A') {
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vc[usedvc].cursY -= vc[usedvc].param1;
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if (vc[usedvc].cursY < 0)
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vc[usedvc].cursY = 0;
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vc[usedvc].ansi = 0;
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cursor_set(vc[usedvc].cursX, vc[usedvc].cursY);
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return 1;
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}
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/* ESC[num1B -- bouge le curseur de num1 vers le bas */
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else if (c == 'B') {
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vc[usedvc].cursY += vc[usedvc].param1;
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if (vc[usedvc].cursY >= getheight() - 1)
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vc[usedvc].cursY = getheight() ;
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vc[usedvc].ansi = 0;
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cursor_set(vc[usedvc].cursX, vc[usedvc].cursY);
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return 1;
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}
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/* ESC[num1D -- bouge le curseur de num1 vers la gauche */
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else if (c == 'D') {
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vc[usedvc].cursX -= vc[usedvc].param1;
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if (vc[usedvc].cursX < 0)
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vc[usedvc].cursX = 0;
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vc[usedvc].ansi = 0;
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cursor_set(vc[usedvc].cursX, vc[usedvc].cursY);
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return 1;
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}
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/* ESC[num1C -- bouge le curseur de num1 vers la droite */
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else if (c == 'C') {
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vc[usedvc].cursX += vc[usedvc].param1;
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if (vc[usedvc].cursX >= getwidth() - 1)
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vc[usedvc].cursX = getwidth();
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vc[usedvc].ansi = 0;
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cursor_set(vc[usedvc].cursX, vc[usedvc].cursY);
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return 1;
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}
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break;
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/* ESC[num1; */
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case 3:
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if (isdigit(c)) {
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vc[usedvc].param2 = vc[usedvc].param2 * 10 + c - '0';
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return 1;
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} else if (c == ';') {
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vc[usedvc].ansi++;
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vc[usedvc].param3 = 0;
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return 1;
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}
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/* ESC[num1;num2H ou ESC[num1;num2f-- bouge le curseur en num1,num2 */
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else if ((c == 'H') || (c == 'f')) {
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/* Remet la position du curseur matériel a num1,num2 */
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cursor_set(vc[usedvc].param2, vc[usedvc].param1);
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/* Remet la position du curseur logiciel a num1,num2 */
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vc[usedvc].cursX = vc[usedvc].param2;
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vc[usedvc].cursY = vc[usedvc].param1;
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vc[usedvc].ansi = 0;
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return 1;
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}
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/* ESC[num1;num2m -- met les attributs num1,num2 */
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else if (c == 'm') {
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setattrib(vc[usedvc].param1);
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setattrib(vc[usedvc].param2);
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vc[usedvc].ansi = 0;
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return 1;
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}
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break;
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/* ESC[num1;num2;num3 */
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case 4:
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if (isdigit(c)) {
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vc[usedvc].param3 = vc[usedvc].param3 * 10 + c - '0';
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return 1;
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}
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/* ESC[num1;num2;num3m -- met les attributs num1,num2,num3 */
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else if (c == 'm') {
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setattrib(vc[usedvc].param1);
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setattrib(vc[usedvc].param2);
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setattrib(vc[usedvc].param3);
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vc[usedvc].ansi = 0;
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return 1;
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}
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break;
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/* Mauvais etat >> reset */
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default:
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vc[usedvc].ansi = 0;
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break;
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}
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vc[usedvc].ansi = 0;
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return 0; /* Ansi fini ;) */
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}
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/*******************************************************************************/
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/* affiche un caractère a l'écran */
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void putchar(u8 thechar)
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{
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page_show(usedvc);
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page_set(usedvc);
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if (makeansi(thechar))
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return;
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switch (thechar) {
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case 0x11:
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if (vc[usedvc].cursY > 0)
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vc[usedvc].cursY--;
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break;
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case 0x12:
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if (vc[usedvc].cursY < getheight() - 1)
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vc[usedvc].cursY++;
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break;
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case 0x13:
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if (vc[usedvc].cursX > 0)
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vc[usedvc].cursX--;
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break;
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case 0x14:
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if (vc[usedvc].cursX < getwidth() - 1)
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vc[usedvc].cursX++;
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break;
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case 0x2:
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vc[usedvc].cursX = 0;
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vc[usedvc].cursY = 0;
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break;
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case 0x3:
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vc[usedvc].cursX = 0;
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vc[usedvc].cursY = getheight() - 1;
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break;
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case 0x19:
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vc[usedvc].cursX = getwidth() - 1;
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break;
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case '\b':
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if (vc[usedvc].cursX == 0) {
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if (vc[usedvc].cursY > 0) {
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vc[usedvc].cursX = getwidth() - 1;
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vc[usedvc].cursY--;
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}
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} else {
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vc[usedvc].cursX--;
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}
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showchar(vc[usedvc].cursX, vc[usedvc].cursY, ' ',
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vc[usedvc].attrib);
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break;
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case '\t':
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vc[usedvc].cursX = (vc[usedvc].cursX + 8) & ~(8 - 1);
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break;
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case '\n':
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vc[usedvc].cursX = 0;
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break;
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case '\r':
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vc[usedvc].cursX = 0;
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vc[usedvc].cursY++;
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break;
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default:
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if (thechar >= ' ') {
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showchar(vc[usedvc].cursX, vc[usedvc].cursY, thechar, vc[usedvc].attrib);
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vc[usedvc].cursX++;
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}
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break;
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}
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if (vc[usedvc].cursX >= getwidth()) {
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vc[usedvc].cursX = 0;
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vc[usedvc].cursY++;
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}
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if (vc[usedvc].cursY >= getheight() ) {
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scroll(1, vc[usedvc].attrib);
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vc[usedvc].cursY = getheight() - 1;
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}
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cursor_set(vc[usedvc].cursX, vc[usedvc].cursY);
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}
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/*******************************************************************************/
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/* Change la console en cours d'utilisation */
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void changevc(u8 avc)
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{
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usedvc = avc;
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page_show(usedvc);
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page_set(usedvc);
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cursor_set(vc[usedvc].cursX, vc[usedvc].cursY);
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}
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/*******************************************************************************/
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/* Renvoie la taille horizontale */
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u16 getwidth(void)
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{
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return width;
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}
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/*******************************************************************************/
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/* Renvoie la taille verticale */
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u16 getheight(void)
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{
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return height;
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}
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/*******************************************************************************/
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/* Efface la console en cours d'utilisation */
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void clearscreen(void)
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{
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fill(vc[usedvc].attrib);
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vc[usedvc].cursX=0;
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vc[usedvc].cursY=0;
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cursor_set(0,0);
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}
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/******************************************************************************/
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/* Active le scrolling */
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void scroll_enable(void)
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{
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vc[usedvc].scroll=true;
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}
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/******************************************************************************/
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/* Désactive le scrolling */
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void scroll_disable(void)
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{
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vc[usedvc].scroll=false;
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}
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/******************************************************************************/
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/* FONCTIONS VIDEO BASIQUES */
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/*******************************************************************************/
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/* initialise le tableau des pilotes vidéo */
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void initdriver() {
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for(u32 i=0;i<MAXDRIVERS;i++)
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registred[i].nom=NULL;
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}
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/*******************************************************************************/
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/* Enregistre un pilote dans le tableau des pilotes vidéo */
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void registerdriver(videofonction *pointer)
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{
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u32 i;
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for(i=0;i<MAXDRIVERS;i++)
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if (registred[i].pointer==pointer)
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return;
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i=0;
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while (registred[i].nom!=NULL && i<MAXDRIVERS)
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i++;
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if (pointer->detect_hardware()!=NULL)
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{
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registred[i].pointer=pointer;
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registred[i].nom=pointer->getvideo_drivername();
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}
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}
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/*******************************************************************************/
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/* Choisi le meilleur driver en terme d'affichage */
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void apply_bestdriver(void) {
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u32 i=0,j=0;
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u8 bestdepth=0x0;
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u8 bestresol=0x0;
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u8 bestmode=0x0;
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u8* bestdriver=NULL;
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capabilities *cap;
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while (registred[i].nom!=NULL && i<MAXDRIVERS) {
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cap=registred[i].pointer->getvideo_capabilities();
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while(cap[j].modenumber!=0xFF) {
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if (cap[j].depth>bestdepth && (cap[j].width*cap[j].height)>=bestresol)
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{
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bestdepth=cap[j].depth;
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bestresol=cap[j].width*cap[j].height;
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bestmode=cap[j].modenumber;
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bestdriver=registred[i].pointer->getvideo_drivername();
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}
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j++;
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}
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i++;
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}
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if (bestdriver!=NULL) apply_driver(bestdriver);
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setvideo_mode(bestmode);
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}
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/*******************************************************************************/
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/* Choisi le meilleur driver spécifié par le nom */
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void apply_driver(u8* name)
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{
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u32 i=0;
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while (registred[i].nom!=NULL && i<MAXDRIVERS) {
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if (strcmp(name,registred[i].nom)==0) {
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remap_memory=registred[i].pointer->remap_memory;
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detect_hardware=registred[i].pointer->detect_hardware;
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setvideo_mode=registred[i].pointer->setvideo_mode;
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getvideo_drivername=registred[i].pointer->getvideo_drivername;
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getvideo_capabilities=registred[i].pointer->getvideo_capabilities;
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getvideo_info=registred[i].pointer->getvideo_info;
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mem_to_video=registred[i].pointer->mem_to_video;
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video_to_mem=registred[i].pointer->video_to_mem;
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video_to_video=registred[i].pointer->video_to_video;
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wait_vretrace=registred[i].pointer->wait_vretrace;
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wait_hretrace=registred[i].pointer->wait_hretrace;
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page_set=registred[i].pointer->page_set;
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page_show=registred[i].pointer->page_show;
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page_split=registred[i].pointer->page_split;
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cursor_enable=registred[i].pointer->cursor_enable;
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cursor_disable=registred[i].pointer->cursor_disable;
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cursor_set=registred[i].pointer->cursor_set;
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font_load=registred[i].pointer->font_load;
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font1_set=registred[i].pointer->font1_set;
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font2_set=registred[i].pointer->font2_set;
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blink_enable=registred[i].pointer->blink_enable;
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blink_disable=registred[i].pointer->blink_disable;
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changemode(0x0);
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return;
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}
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i++;
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}
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}
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/*******************************************************************************/
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/* Applique le driver suivant */
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void apply_nextdriver(void) {
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u32 i=0;
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while (registred[i].nom!=NULL && i<MAXDRIVERS)
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if (strcmp(getvideo_drivername(),registred[i].nom)==0) {
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i++;
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if (registred[i].nom!=NULL) i=0;
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apply_driver(registred[i].nom);
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return;
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}
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i++;
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}
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/*******************************************************************************/
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/* Applique le mode suivant (le driver suivant si dernier mode) */
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void apply_nextvideomode(void) {
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capabilities *cap=getvideo_capabilities();
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videoinfos *info=getvideo_info();
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u32 mode=info->currentmode;
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u8 index=0;
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while(cap[index].modenumber!=0xFF) {
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if (cap[index].modenumber==mode) {
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index++;
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if (cap[index].modenumber==0xFF)
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apply_nextdriver();
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else
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changemode(cap[index].modenumber);
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return;
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}
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index++;
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}
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}
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/*******************************************************************************/
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/* Change de mode video */
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void changemode(u8 mode)
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{
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setvideo_mode(mode);
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vinfo=getvideo_info();
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if (!vinfo->isgraphic) {
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width=vinfo->currentwidth;
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height=vinfo->currentheight;
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}
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else
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{
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width=(vinfo->currentwidth>>3);
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height=(vinfo->currentheight>>3);
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}
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for(u32 i=0;i<MAXFONTS;i++)
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fonts[i].nom[0]=NULL;
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loadfont("BIOS1",font8x8,8,8);
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loadfont("BIOS0",font8x16,8,16);
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setfont("BIOS1");
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clearscreen();
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}
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/******************************************************************************/
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/* Rempli l'écran avec un attribut donné et des espaces vides */
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static u8 space=' ';
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void fill(u8 attrib)
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{
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if (!vinfo->isgraphic)
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{
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mem_to_video(space ,0,vinfo->pagesize>>1, false);
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mem_to_video(attrib,1,vinfo->pagesize>>1, false);
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}
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else
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{
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mem_to_video(0x0,0,vinfo->pagesize>>2, false);
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}
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}
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/******************************************************************************/
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/* Défile l'écran de N ligne si le scrolling est activé */
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|
|
void scroll (u8 lines, u8 attrib)
|
|
{
|
|
if (vc[usedvc].scroll) {
|
|
if (!vinfo->isgraphic)
|
|
{
|
|
u32 gain=vinfo->currentpitch*lines;
|
|
video_to_video(gain,0,vinfo->pagesize-gain);
|
|
mem_to_video(space ,vinfo->pagesize-gain-2,gain, false);
|
|
mem_to_video(attrib,vinfo->pagesize-gain-1,gain, false);
|
|
}
|
|
else
|
|
{
|
|
u32 gain=vinfo->currentpitch*(lines<<3);
|
|
video_to_video(gain,0,vinfo->pagesize-gain);
|
|
mem_to_video(0x0 ,vinfo->pagesize-gain-2,gain, false);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
clearscreen();
|
|
}
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Retourne une couleur RGB 32 bits depuis une couleur EGA/VGA */
|
|
|
|
static convertega[]={0,1,2,3,4,5,20,7,56,57,58,59,60,61,62,63};
|
|
|
|
u8 egatovga(u8 ega)
|
|
{
|
|
return convertega[ega & 0xF];
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Retourne une couleur RGB 32 bits depuis une couleur EGA/VGA */
|
|
|
|
static convertrgb[]={0x000000,0x0000AA,0x00AA00,0x00AAAA,0xAA0000,0xAA00AA,0xAA5500,0xAAAAAA,0x555555,0x5555FF,0x55FF55,0x55FFFF,0xFF5555,0xFF55FF,0xFFFF55,0xFFFFFF};
|
|
|
|
u32 egatorgb(u8 vga)
|
|
{
|
|
return convertrgb[vga & 0xF];
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Retourne le caractère du mode texte aux coordonnées spécifiées */
|
|
|
|
u8 getchar (u16 coordx, u16 coordy)
|
|
{
|
|
u8 thechar=0;
|
|
if (!vinfo->isgraphic)
|
|
{
|
|
u32 addr=(coordx<<1)+vinfo->currentpitch*coordy;
|
|
video_to_mem(addr,&thechar,1);
|
|
}
|
|
return thechar;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Retourne l'attribut du mode texte aux coordonnées spécifiées */
|
|
|
|
u8 getattrib (u16 coordx, u16 coordy)
|
|
{
|
|
u8 attrib=0;
|
|
if (!vinfo->isgraphic)
|
|
{
|
|
u32 addr=(coordx<<1)+vinfo->currentpitch*coordy;
|
|
video_to_mem(addr+1,&attrib,1);
|
|
}
|
|
return attrib;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Chargement d'une police de caractère */
|
|
|
|
void loadfont(u8 *name,font* pointer,u8 width, u8 height)
|
|
{
|
|
u32 i;
|
|
for(i=0;i<MAXFONTS;i++)
|
|
if (fonts[i].nom[0]!=NULL && fonts[i].pointer==pointer)
|
|
return;
|
|
i=0;
|
|
while (fonts[i].nom[0]!=NULL && i<MAXFONTS)
|
|
i++;
|
|
fonts[i].pointer=pointer;
|
|
strcpy(name,fonts[i].nom);
|
|
fonts[i].width=width;
|
|
fonts[i].height=height;
|
|
if (fonts[i].nom[0]=='B' && fonts[i].nom[1]=='I' && fonts[i].nom[2]=='O' && fonts[i].nom[3]=='S')
|
|
{
|
|
u8 number=(fonts[i].nom[4]-'0');
|
|
font_load(pointer, height, number);
|
|
}
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Changement de la police */
|
|
|
|
void setfont(u8 *fontname)
|
|
{
|
|
u32 i=0;
|
|
while (fonts[i].nom!=NULL && i<MAXFONTS) {
|
|
if (strcmp(fontname,fonts[i].nom)==0) {
|
|
currentfont=&fonts[i];
|
|
return;
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* FONCTIONS VIDEO GRAPHIQUES */
|
|
|
|
/******************************************************************************/
|
|
/* Affiche un caractère */
|
|
|
|
void showchar(u16 coordx, u16 coordy, u8 thechar, u8 attrib)
|
|
{
|
|
u8 x, y, pattern, set;
|
|
u32 color;
|
|
if (!vinfo->isgraphic)
|
|
{
|
|
u32 addr=(coordx<<1)+vinfo->currentpitch*coordy;
|
|
mem_to_video(thechar,addr , 1, false);
|
|
mem_to_video(attrib, addr+1, 1, false);
|
|
}
|
|
else
|
|
{
|
|
for (y = 0; y < currentfont->height; y++)
|
|
{
|
|
pattern = currentfont->pointer[currentfont->height*thechar + y];
|
|
for (x = 0; x < currentfont->width; x++)
|
|
{
|
|
rol(pattern);
|
|
set = pattern & 0x1;
|
|
if (set == 0)
|
|
if (vinfo->currentdepth==32)
|
|
color = egatorgb((attrib & 0xF0) >> 4);
|
|
else
|
|
color = egatovga((attrib & 0xF0) >> 4);
|
|
else
|
|
if (vinfo->currentdepth==32)
|
|
color = egatorgb(attrib & 0x0F);
|
|
else
|
|
color = egatovga(attrib & 0x0F);
|
|
|
|
|
|
|
|
writepxl(currentfont->width*coordx + x + 1, currentfont->height*coordy + y, color);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Affiche une ligne horizontale entre les points spécifiés */
|
|
|
|
void hline(s16 x1, s16 x2, s16 y, u32 color)
|
|
{
|
|
if (vinfo->isgraphic)
|
|
{
|
|
if (x1<0)
|
|
{
|
|
if (x2<0)
|
|
return;
|
|
x1=0;
|
|
}
|
|
else if (x1>vinfo->currentwidth)
|
|
x1=vinfo->currentwidth-1;
|
|
if (x2<0)
|
|
x2=0;
|
|
else if (x2>vinfo->currentwidth)
|
|
{
|
|
if (x1>vinfo->currentwidth)
|
|
return;
|
|
x2=vinfo->currentwidth-1;
|
|
}
|
|
if (x1>vinfo->currentwidth)
|
|
x1=vinfo->currentwidth-1;
|
|
if (x2 > x1)
|
|
mem_to_video(color,(vinfo->currentdepth>>3)*x1+vinfo->currentpitch*y,x2-x1,false);
|
|
else
|
|
mem_to_video(color,(vinfo->currentdepth>>3)*x2+vinfo->currentpitch*y,x1-x2,false);
|
|
}
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
/* Affiche un pixel à l'écran */
|
|
|
|
void v_writepxl(vertex2d *A, u32 color)
|
|
{
|
|
writepxl(A->x, A->y, color);
|
|
}
|
|
|
|
void writepxl(s16 x, s16 y, u32 color)
|
|
{
|
|
if (vinfo->isgraphic)
|
|
{
|
|
if (x>0 && y>0 && x<vinfo->currentwidth && y<vinfo->currentheight)
|
|
{
|
|
u32 addr=(vinfo->currentdepth>>3)*x+vinfo->currentpitch*y;
|
|
mem_to_video(color,addr,1,false);
|
|
}
|
|
}
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Affiche une ligne entre les points spécifiés */
|
|
|
|
void v_line(vertex2d *A, vertex2d *B, u32 color)
|
|
{
|
|
line(A->x, A->y, B->x, B->y, color);
|
|
}
|
|
|
|
void line(s16 x1, s16 y1, s16 x2, s16 y2, u32 color)
|
|
{
|
|
s16 dx, dy, sdx, sdy;
|
|
float a, b;
|
|
s16 i, dxabs, dyabs, x, y, px, py;
|
|
|
|
dx = x2 - x1; /* distance horizontale de la line */
|
|
dy = y2 - y1; /* distance verticale de la line */
|
|
|
|
if (x1<0)
|
|
{
|
|
a = 1.0f * dy / dx;
|
|
b = y1 - a*x1;
|
|
x1 = 0;
|
|
y1 = b;
|
|
if (x2<0)
|
|
return;
|
|
}
|
|
else if (x2<0)
|
|
{
|
|
a = 1.0f * dy / dx;
|
|
b = y2 - a*x2;
|
|
x2 = 0;
|
|
y2 = b;
|
|
}
|
|
if (y1<0)
|
|
{
|
|
a = 1.0f * dy / dx;
|
|
b = y1 - a*x1;
|
|
y1 = 0;
|
|
x1 = - b / a;
|
|
if (y2<0)
|
|
return;
|
|
}
|
|
else if (y2<0)
|
|
{
|
|
a = 1.0f * dy / dx;
|
|
b = y2 - a*x2;
|
|
y2 = 0;
|
|
x2 = - b / a;
|
|
}
|
|
if (x1>vinfo->currentwidth)
|
|
{
|
|
a = 1.0f * dy / dx;
|
|
b = y1 - a*x1;
|
|
x1 = vinfo->currentwidth-1;
|
|
y1 = a*x1+b;
|
|
if (x2>vinfo->currentwidth)
|
|
return;
|
|
}
|
|
else if (x2>vinfo->currentwidth)
|
|
{
|
|
a = 1.0f * dy / dx;
|
|
b = y2 - a*x2;
|
|
x2 = vinfo->currentwidth-1;
|
|
y2 = a*x2+b;
|
|
}
|
|
if (y1>vinfo->currentheight)
|
|
{
|
|
a = 1.0f * dy / dx;
|
|
b = y1 - a*x1;
|
|
y1 = vinfo->currentheight-1;
|
|
x1 = (y1 - b) / a;
|
|
if (y2>vinfo->currentheight)
|
|
return;
|
|
}
|
|
else if (y2>vinfo->currentheight)
|
|
{
|
|
a = 1.0f * dy / dx;
|
|
b = y2 - a*x2;
|
|
y2 = vinfo->currentheight-1;
|
|
x2 = (y2 - b) / a;
|
|
}
|
|
dxabs = abs(dx);
|
|
dyabs = abs(dy);
|
|
sdx = sgn(dx);
|
|
sdy = sgn(dy);
|
|
x = dyabs >> 1;
|
|
y = dxabs >> 1;
|
|
px = x1;
|
|
py = y1;
|
|
|
|
writepxl(px, py, color);
|
|
|
|
if (dxabs >= dyabs) { /* la ligne est plus horizontale que verticale */
|
|
for (i = 0; i < dxabs; i++) {
|
|
y += dyabs;
|
|
if (y >= dxabs) {
|
|
y -= dxabs;
|
|
py += sdy;
|
|
}
|
|
px += sdx;
|
|
writepxl(px, py, color);
|
|
}
|
|
} else { /* la ligne est plus verticale que horizontale */
|
|
|
|
for (i = 0; i < dyabs; i++) {
|
|
x += dxabs;
|
|
if (x >= dyabs) {
|
|
x -= dyabs;
|
|
px += sdx;
|
|
}
|
|
py += sdy;
|
|
writepxl(px, py, color);
|
|
}
|
|
}
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Affiche un triangle rempli entre les points spécifiés */
|
|
|
|
void trianglefilled(vertex2d * AA, vertex2d * BB, vertex2d * CC, u32 color)
|
|
{
|
|
vertex2d *A, *B, *C, *TEMP;
|
|
u32 a, b, y, last;
|
|
int dx1, dx2, dx3, dy1, dy2, dy3, sa, sb;
|
|
A = AA;
|
|
B = BB;
|
|
C = CC;
|
|
while (A->y > B->y || B->y > C->y || A->y == C->y) {
|
|
if (A->y > B->y)
|
|
swapvertex(A, B);
|
|
if (B->y > C->y)
|
|
swapvertex(B, C);
|
|
if (A->y > C->y)
|
|
swapvertex(A, C);
|
|
}
|
|
if (A->y == C->y) { //meme ligne
|
|
a = b = A->x;
|
|
if (B->x < a)
|
|
a = B->x;
|
|
else if (B->x > b)
|
|
b = B->x;
|
|
if (C->x < a)
|
|
a = C->x;
|
|
else if (C->x > b)
|
|
b = C->x;
|
|
hline(a, b, A->y, color);
|
|
return;
|
|
}
|
|
dx1 = B->x - A->x;
|
|
dy1 = B->y - A->y;
|
|
dx2 = C->x - A->x;
|
|
dy2 = C->y - A->y;
|
|
dx3 = C->x - B->x;
|
|
dy3 = C->y - B->y;
|
|
sa = 0;
|
|
sb = 0;
|
|
|
|
if (B->y == C->y)
|
|
last = B->y;
|
|
else
|
|
last = B->y - 1;
|
|
|
|
for (y = A->y; y <= last; y++) {
|
|
a = A->x + sa / dy1;
|
|
b = A->x + sb / dy2;
|
|
sa += dx1;
|
|
sb += dx2;
|
|
hline(a, b, y, color);
|
|
}
|
|
|
|
sa = dx3 * (y - B->y);
|
|
sb = dx2 * (y - A->y);
|
|
for (; y <= C->y; y++) {
|
|
a = B->x + sa / dy3;
|
|
b = A->x + sb / dy2;
|
|
sa += dx3;
|
|
sb += dx2;
|
|
hline(a, b, y, color);
|
|
}
|
|
}
|
|
|
|
void swapvertex(vertex2d * A, vertex2d * B)
|
|
{
|
|
vertex2d temp = *A;
|
|
*A = *B;
|
|
*B = temp;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Affiche un triangle entre les points spécifiés */
|
|
|
|
void triangle(vertex2d * AA, vertex2d * BB, vertex2d * CC, u32 color)
|
|
{
|
|
v_line(AA, BB, color);
|
|
v_line(BB, CC, color);
|
|
v_line(CC, AA, color);
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
/* FONCTIONS VIDEO TEXTE AFFICHAGE */
|
|
|
|
/*******************************************************************************/
|
|
/* affiche une chaine de caractère a l'écran */
|
|
|
|
u32 print(u8 * string)
|
|
{
|
|
u8 *source;
|
|
u32 i = 0;
|
|
source = string;
|
|
while (*source != 0) {
|
|
putchar(*source++);
|
|
i++;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
/*******************************************************************************/
|
|
/* Fonction d'affichage (pour printf) */
|
|
|
|
u32 printstr(u8* src, u8** dest, u32 len) {
|
|
if (*(src)=='\000') return;
|
|
for(u32 i=0;i<len;i++)
|
|
putchar(*(src++));
|
|
return len;
|
|
}
|
|
|
|
/*******************************************************************************/
|
|
/* Fonction d'enregistrement dans une variable (pour sprintf) */
|
|
|
|
u32 storestr(u8* src, u8** dest, u32 len) {
|
|
memcpy(src, *dest, len, 1);
|
|
*dest=*dest+len;
|
|
return len;
|
|
}
|
|
|
|
#define maxbuffersize 4096
|
|
|
|
/*******************************************************************************/
|
|
/* affiche une chaine de caractère formaté a l'ecran */
|
|
|
|
u32 printf(const u8 * string, ...)
|
|
{
|
|
va_list args;
|
|
va_start(args, string);
|
|
vprintf(string, args);
|
|
va_end(args);
|
|
}
|
|
|
|
/*******************************************************************************/
|
|
/* met une chaine de caractère formaté dans une variable */
|
|
|
|
u32 sprintf(u8 *variable, const u8 *string, ...)
|
|
{
|
|
va_list args;
|
|
va_start(args, string);
|
|
vsprintf(variable, string, args);
|
|
va_end(args);
|
|
}
|
|
|
|
/*******************************************************************************/
|
|
/* met une chaine de caractère formaté dans une variable de taille fixée */
|
|
|
|
u32 snprintf(u8 *variable, u32 maxsize, const u8 *string, ...)
|
|
{
|
|
va_list args;
|
|
va_start(args, string);
|
|
vsnprintf(variable, maxsize, string, args);
|
|
va_end(args);
|
|
}
|
|
|
|
/*******************************************************************************/
|
|
/* affiche une chaine de caractère formaté a l'ecran depuis vararg */
|
|
|
|
u32 vprintf(const u8 * string, va_list args)
|
|
{
|
|
format(string, args, maxbuffersize, &printstr, NULL);
|
|
}
|
|
|
|
/*******************************************************************************/
|
|
/* met une chaine de caractère formaté dans une variable depuis vararg */
|
|
|
|
u32 vsprintf(u8 *variable, const u8 *string, va_list args)
|
|
{
|
|
format(string, args, maxbuffersize, &storestr, variable);
|
|
}
|
|
|
|
/*******************************************************************************/
|
|
/* met une chaine de caractère formaté dans une variable de taille fixée depuis vararg */
|
|
|
|
u32 vsnprintf(u8 *variable, u32 maxsize, const u8 *string, va_list args)
|
|
{
|
|
format(string, args, maxsize, &storestr, variable);
|
|
}
|
|
|
|
/*******************************************************************************/
|
|
/* affiche une chaine de caractère formaté a l'ecran */
|
|
|
|
u32 format(const u8 * string, va_list args, u32 maxsize, u32 (*fonction)(u8* src, u8** dest, u32 len), u8* dest)
|
|
{
|
|
u64 sizes[] = { 0xFF, 0xFFFF, 0xFFFFFFFF, 0xFFFFFFFFFFFFFFFF };
|
|
u8 units[][4] = { "o\000\000", "kio", "mio", "gio", "tio", "pio" };
|
|
u8 strbase2[] = "0xb\000";
|
|
u8 strbase8[] = "0xo\000";
|
|
u8 strbase16[] = "0x\000";
|
|
u8 hexadecimal[] = "*0x\000";
|
|
u8 achar, temp;
|
|
u8 asize, charadd, unit, precisioni, precisionf;
|
|
u8 buffer[maxbuffersize];
|
|
u8* bufferend;
|
|
u32 buffersize;
|
|
u8 *str = string;
|
|
u8 *strtemp;
|
|
u32 i = 0, counter = 0;
|
|
u64 num;
|
|
bool flag = false, intok = false, decok = false;
|
|
|
|
for (achar = *str; achar != '\000'; i++, achar = *(str + i)) {
|
|
if (achar != '%' && !flag) {
|
|
fonction((str + i),&dest,1);
|
|
counter++;
|
|
asize = 2;
|
|
precisioni = 0;
|
|
precisionf = 0;
|
|
intok = false;
|
|
decok = false;
|
|
charadd = 0xFF;
|
|
} else if (achar == '%' || flag) {
|
|
if (!flag)
|
|
++i;
|
|
achar = *(str + i);
|
|
switch (achar) {
|
|
case 'z':
|
|
charadd = achar;
|
|
flag = true;
|
|
break;
|
|
case ' ':
|
|
charadd = achar;
|
|
flag = true;
|
|
break;
|
|
case 'h':
|
|
asize--;
|
|
if (asize<0) asize=0;
|
|
flag = true;
|
|
break;
|
|
case 'l':
|
|
asize++;
|
|
if (asize>3) asize=3;
|
|
flag = true;
|
|
break;
|
|
case '.':
|
|
intok=true;
|
|
decok=false;
|
|
flag = true;
|
|
break;
|
|
case '0':
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
if (!intok)
|
|
{
|
|
if (!decok)
|
|
{
|
|
precisioni=achar-'0';
|
|
decok=true;
|
|
}
|
|
else {
|
|
precisioni*=10;
|
|
precisioni+=achar-'0';
|
|
decok=false;
|
|
}
|
|
}
|
|
else {
|
|
if (!decok)
|
|
{
|
|
precisionf=achar-'0';
|
|
decok=true;
|
|
}
|
|
else {
|
|
precisionf*=10;
|
|
precisionf+=achar-'0';
|
|
decok=false;
|
|
}
|
|
}
|
|
flag = true;
|
|
break;
|
|
case 'f':
|
|
case 'e':
|
|
if (achar=='e') {
|
|
precisioni=1;
|
|
precisionf=8;
|
|
}
|
|
if (asize==0) {
|
|
num = (u64) va_arg(args, u8);
|
|
break;
|
|
}
|
|
else if (asize==1) {
|
|
num = (u64) va_arg(args, u16);
|
|
break;
|
|
}
|
|
else if (asize==2)
|
|
bufferend=rtoasingle((float)va_arg(args, double), &buffer, precisioni, precisionf);
|
|
else
|
|
bufferend=rtoadouble((double)va_arg(args, double), &buffer, precisioni, precisionf);
|
|
buffersize=bufferend-&buffer[0];
|
|
counter += fonction(&buffer,&dest,buffersize);
|
|
flag = false;
|
|
break;
|
|
case 'u':
|
|
if (asize==0)
|
|
num = (u64) va_arg(args, u8);
|
|
else if (asize==1)
|
|
num = (u64) va_arg(args, u16);
|
|
else if (asize==2)
|
|
num = (u64) va_arg(args, u32);
|
|
else
|
|
num = (u64) va_arg(args, u64);
|
|
if (charadd == 0xFF)
|
|
charadd = '0';
|
|
bufferend=itoa(num, &buffer, 10, sizes[asize], charadd);
|
|
buffersize=bufferend-&buffer[0];
|
|
counter += fonction(&buffer,&dest,buffersize);
|
|
flag = false;
|
|
break;
|
|
case 'o':
|
|
if (asize==0)
|
|
num = (u64) va_arg(args, u8);
|
|
else if (asize==1)
|
|
num = (u64) va_arg(args, u16);
|
|
else if (asize==2)
|
|
num = (u64) va_arg(args, u32);
|
|
else
|
|
num = (u64) va_arg(args, u64);
|
|
if (charadd == 0xFF)
|
|
charadd = '0';
|
|
counter += fonction(&strbase8,&dest,1);
|
|
bufferend=itoa(num, &buffer, 8, sizes[asize], charadd);
|
|
buffersize=bufferend-&buffer[0];
|
|
counter += fonction(&buffer,&dest,buffersize);
|
|
flag = false;
|
|
break;
|
|
case 'c':
|
|
temp = (u8) va_arg(args, u8);
|
|
fonction(&temp,string,1);
|
|
counter++;
|
|
flag = false;
|
|
break;
|
|
case 'H':
|
|
if (asize==0)
|
|
num = (u64) va_arg(args, u8);
|
|
else if (asize==1)
|
|
num = (u64) va_arg(args, u16);
|
|
else if (asize==2)
|
|
num = (u64) va_arg(args, u32);
|
|
else
|
|
num = (u64) va_arg(args, u64);
|
|
if (charadd == 0xFF)
|
|
charadd = ' ';
|
|
unit=0;
|
|
while(num>1024*10)
|
|
{
|
|
num=num>>10;
|
|
unit++;
|
|
}
|
|
bufferend=sitoa(num, &buffer, sizes[asize]);
|
|
buffersize=bufferend-&buffer[0];
|
|
counter += fonction(&buffer,&dest,buffersize);
|
|
counter += fonction(&units[unit],&dest,3);
|
|
flag = false;
|
|
break;
|
|
case 'd':
|
|
case 'i':
|
|
if (asize==0)
|
|
num = (u64) va_arg(args, u8);
|
|
else if (asize==1)
|
|
num = (u64) va_arg(args, u16);
|
|
else if (asize==2)
|
|
num = (u64) va_arg(args, u32);
|
|
else
|
|
num = (u64) va_arg(args, u64);
|
|
if (charadd == 0xFF)
|
|
charadd = ' ';
|
|
bufferend=sitoa(num, &buffer, sizes[asize]);
|
|
buffersize=bufferend-&buffer[0];
|
|
counter += fonction(&buffer,&dest,buffersize);
|
|
flag = false;
|
|
break;
|
|
case 's':
|
|
strtemp = (u8 *) va_arg(args, u8 *);
|
|
counter += fonction(strtemp,&dest,strlen(strtemp));
|
|
flag = false;
|
|
break;
|
|
case 'p':
|
|
num = (u32) va_arg(args, int);
|
|
if (charadd == 0xFF)
|
|
charadd = '0';
|
|
counter += fonction(&hexadecimal,&dest,3);
|
|
bufferend=itoa(num, &buffer, 16, sizes[asize], '0');
|
|
buffersize=bufferend-&buffer[0];
|
|
counter += fonction(&buffer,&dest,buffersize);
|
|
flag = false;
|
|
break;
|
|
case 'x':
|
|
case 'X':
|
|
case 'y':
|
|
case 'Y':
|
|
if (asize==0)
|
|
num = (u64) va_arg(args, u8);
|
|
else if (asize==1)
|
|
num = (u64) va_arg(args, u16);
|
|
else if (asize==2)
|
|
num = (u64) va_arg(args, u32);
|
|
else
|
|
num = (u64) va_arg(args, u64);
|
|
if (charadd == 0xFF)
|
|
charadd = '0';
|
|
if (achar == 'X') counter += fonction(&strbase16,&dest,2);
|
|
bufferend=itoa(num, &buffer, 16, sizes[asize], charadd);
|
|
buffersize=bufferend-&buffer[0];
|
|
if (achar == 'X'||achar == 'Y')
|
|
strtoupper(&buffer);
|
|
counter += fonction(&buffer,&dest,buffersize);
|
|
flag = false;
|
|
break;
|
|
case 'b':
|
|
if (asize==0)
|
|
num = (u64) va_arg(args, u8);
|
|
else if (asize==1)
|
|
num = (u64) va_arg(args, u16);
|
|
else if (asize==2)
|
|
num = (u64) va_arg(args, u32);
|
|
else
|
|
num = (u64) va_arg(args, u64);
|
|
if (charadd == 0xFF)
|
|
charadd = '0';
|
|
counter += fonction(&strbase2,&dest,2);
|
|
bufferend=itoa(num, &buffer, 2, sizes[asize], charadd);
|
|
buffersize=bufferend-&buffer[0];
|
|
counter += fonction(&buffer,&dest,buffersize);
|
|
flag = false;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
buffer[0]='\000';
|
|
fonction(&buffer,&dest,1);
|
|
return counter;
|
|
}
|
|
|
|
/*******************************************************************************/
|
|
/* converti un réel signé en chaine de caractère */
|
|
|
|
u8 *rtoadouble(double num, u8 * str, u8 precisioni , u8 precisionf) {
|
|
s8 power10;
|
|
u8 *pointer=str;
|
|
u8 i,j,integerpart,fracpart;
|
|
if (precisioni==0) precisioni=12;
|
|
if (precisionf==0) precisionf=8;
|
|
double round=0.5;
|
|
for (i=0;i<precisionf;i++) round/=10;
|
|
num+=round;
|
|
bool intok=false;
|
|
if (num<0) {
|
|
num=-num;
|
|
*(pointer++) = '-';
|
|
}
|
|
power10=0;
|
|
{
|
|
while (num>=10.0) {
|
|
num/=10;
|
|
power10++;
|
|
}
|
|
}
|
|
if (power10<precisioni)
|
|
{
|
|
fracpart=power10;
|
|
power10=0;
|
|
}
|
|
else
|
|
{
|
|
fracpart=precisioni;
|
|
power10=power10-precisioni+1;
|
|
}
|
|
if (power10==0)
|
|
{
|
|
if (num!=0.0)
|
|
{
|
|
while (num<1.0)
|
|
{
|
|
num*=10;
|
|
power10--;
|
|
}
|
|
}
|
|
}
|
|
|
|
i=j=0;
|
|
while(num>0)
|
|
{
|
|
if (!intok & (i>fracpart || i>=precisioni)) {
|
|
*(pointer++) = '.';
|
|
intok=true;
|
|
}
|
|
if (intok && j>=precisionf)
|
|
break;
|
|
num-= (integerpart=num);
|
|
*(pointer++) = integerpart+'0';
|
|
num*=10.0;
|
|
if (!intok)
|
|
i++;
|
|
else
|
|
j++;
|
|
}
|
|
while((*(pointer-1))=='0' && pointer>str+1)
|
|
pointer--;
|
|
if ((*(pointer-1))=='.') pointer--;
|
|
if (abs(power10)>0)
|
|
{
|
|
*(pointer++) = 'e';
|
|
if (power10<0) {
|
|
power10=-power10;
|
|
*(pointer++) = '-';
|
|
}
|
|
*(pointer++) = (power10/10+'0');
|
|
*(pointer++) = (power10%10+'0');
|
|
}
|
|
*(pointer++) = 0;
|
|
}
|
|
|
|
/*******************************************************************************/
|
|
/* converti un réel signé en chaine de caractère */
|
|
|
|
u8 *rtoasingle(float num, u8 * str, u8 precisioni , u8 precisionf) {
|
|
return rtoadouble((double)num, str, precisioni, precisionf);
|
|
}
|
|
|
|
/*******************************************************************************/
|
|
/* converti un entier non signé en chaine de caractère */
|
|
|
|
u8 *itoa(u64 orignum, u8 * str, u8 base, u64 dim, u8 achar)
|
|
{
|
|
u8 *pointer = str, i, size = 0;
|
|
u64 num = orignum;
|
|
if (dim>=0xFF)
|
|
{
|
|
num &= dim;
|
|
if ((num == 0) && (achar == 0)) {
|
|
*(pointer++) = '0';
|
|
*pointer = '\000';
|
|
return pointer;
|
|
}
|
|
switch (base) {
|
|
case 2:
|
|
size = log2(dim);
|
|
break;
|
|
case 8:
|
|
size = log2(dim) / 2;
|
|
break;
|
|
case 10:
|
|
size = log10(dim);
|
|
break;
|
|
case 16:
|
|
size = log2(dim) / 4;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
size=dim;
|
|
for (i = 0; i < size; i++) {
|
|
if (num == 0) {
|
|
if (i==0)
|
|
*(pointer++) = '0';
|
|
else
|
|
*(pointer++) = achar;
|
|
if (achar == 0) break;
|
|
}
|
|
else
|
|
{
|
|
u64 result = num % (u32) base;
|
|
*(pointer++) = (result > 9) ? (result - 10) + 'a' : result + '0';
|
|
num = num / (u32) base;
|
|
}
|
|
}
|
|
*pointer = '\000';
|
|
strinvert(str);
|
|
return pointer;
|
|
}
|
|
|
|
/*******************************************************************************/
|
|
/* converti un entier en chaine de caractère */
|
|
|
|
u8 *sitoa(u64 num, u8 * str, u64 dim)
|
|
{
|
|
u8 *pointer = str;
|
|
bool isNegative = false;
|
|
num &= dim;
|
|
if (num == 0) {
|
|
*(pointer++) = '0';
|
|
*pointer = '\000';
|
|
return pointer;
|
|
}
|
|
if ((((dim+1)>>1)&num)>0) {
|
|
isNegative = true;
|
|
num = (~num&dim)+1;
|
|
}
|
|
while (num != 0) {
|
|
u64 result = num % 10;
|
|
*(pointer++) =
|
|
(result > 9) ? (result - 10) + 'a' : result + '0';
|
|
num = num / 10;
|
|
}
|
|
if (isNegative)
|
|
*(pointer++) = '-';
|
|
*pointer = '\000';
|
|
strinvert(str);
|
|
return pointer;
|
|
}
|