2018-09-28 20:35:51 +02:00
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/*******************************************************************************/
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/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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/* */
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2018-08-17 16:46:56 +02:00
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#include "3d.h"
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2018-09-28 20:35:51 +02:00
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#include "types.h"
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#include "video.h"
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2018-11-01 01:12:30 +01:00
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#include "string.h"
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2018-09-28 20:35:51 +02:00
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2018-10-26 14:09:43 +02:00
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/*******************************************************************************/
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/* Crée une projection simple pour test */
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void proj(vector4 list[], vertex2d plane[], vector4 origin[], u16 number, float factor)
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{
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for (u32 i=0;i<number;i++)
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{
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plane[i].x=(int)((list[i].x*factor)/(list[i].z+origin->z)+origin->x);
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plane[i].y=(int)((list[i].y*factor)/(list[i].z+origin->z)+origin->y);
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}
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}
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/*******************************************************************************/
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/* Crée une liste de vertex3D pour un cube */
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void cube(vector4 list[], vector4 *origin, u16 size)
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{
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list[0].x=origin->x;
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list[0].y=origin->y;
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list[0].z=origin->z;
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list[0].w=1.0f;
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list[1].x=origin->x+size;
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list[1].y=origin->y;
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list[1].z=origin->z;
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list[1].w=1.0f;
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list[2].x=origin->x;
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list[2].y=origin->y+size;
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list[2].z=origin->z;
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list[2].w=1.0f;
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list[3].x=origin->x+size;
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list[3].y=origin->y+size;
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list[3].z=origin->z;
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list[3].w=1.0f;
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list[4].x=origin->x;
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list[4].y=origin->y;
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list[4].z=origin->z+size;
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list[4].w=1.0f;
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list[5].x=origin->x+size;
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list[5].y=origin->y;
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list[5].z=origin->z+size;
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list[5].w=1.0f;
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list[6].x=origin->x;
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list[6].y=origin->y+size;
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list[6].z=origin->z+size;
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list[6].w=1.0f;
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list[7].x=origin->x+size;
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list[7].y=origin->y+size;
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list[7].z=origin->z+size;
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list[7].w=1.0f;
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}
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2018-10-30 19:21:18 +01:00
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/*******************************************************************************/
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/* Charge un fichier 3DS */
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2018-11-01 01:12:30 +01:00
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int load3ds(u8 *pointer,u32 size, model3d *model)
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2018-10-30 19:21:18 +01:00
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{
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2018-11-01 01:12:30 +01:00
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u8 *ptr=pointer;
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u16 chunk_id;
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u32 chunk_size;
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u16 i;
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float *listfloat;
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u16 *listunsigned;
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dsState state=DS_READ_CHUNK_ID;
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bool dsfile=false;
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while(ptr-pointer<size) {
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switch(state)
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{
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case DS_READ_CHUNK_ID:
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chunk_id=*((u16*) ptr);
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ptr+=2;
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state=DS_READ_CHUNK_LENGTH;
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break;
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case DS_READ_CHUNK_LENGTH:
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chunk_size=*((u32*) ptr);
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ptr+=4;
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switch(chunk_id)
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{
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case MAIN3DS:
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dsfile=true;
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ptr+=10;
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state=DS_READ_CHUNK_ID;
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break;
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case EDIT3DS:
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state=DS_READ_CHUNK_ID;
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break;
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case OBJ_TRIMESH:
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state=DS_READ_CHUNK_ID;
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break;
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case EDIT_OBJECT:
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state=DS_READ_OBJECT_NAME;
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break;
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case TRI_VERTEXL:
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state=DS_READ_POINT_COUNT;
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break;
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case TRI_FACEL1:
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state=DS_READ_FACE_COUNT;
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break;
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case TRI_LOCAL:
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state=DS_READ_MATRIX;
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break;
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default:
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if (!dsfile) return 1;
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ptr+=(chunk_size-6);
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state=DS_READ_CHUNK_ID;
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break;
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}
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break;
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case DS_READ_OBJECT_NAME:
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strcpy(ptr, model->name);
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ptr+=(strlen(ptr)+1);
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state=DS_READ_CHUNK_ID;
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break;
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case DS_SKIP_CHUNK:
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break;
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case DS_READ_POINT_COUNT:
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model->vertexnb=*((u16*) ptr);
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state=DS_READ_POINTS;
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ptr+=2;
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break;
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case DS_READ_POINTS:
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i=0;
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listfloat=ptr;
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model->vertexlist=0x00300000;
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while(i<model->vertexnb)
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{
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model->vertexlist[i].x=*(listfloat++);
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model->vertexlist[i].y=*(listfloat++);
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model->vertexlist[i].z=*(listfloat++);
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model->vertexlist[i++].w=1.0;
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}
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ptr=listfloat;
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state=DS_READ_CHUNK_ID;
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break;
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case DS_READ_FACE_COUNT:
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model->facenb=*((u16*) ptr);
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state=DS_READ_FACES;
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ptr+=2;
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break;
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case DS_READ_FACES:
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i=0;
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listunsigned=ptr;
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model->facelist=0x00400000;
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while(i<model->facenb*3)
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{
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model->facelist[i++]=*(listunsigned++);
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model->facelist[i++]=*(listunsigned++);
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model->facelist[i++]=*(listunsigned++);
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listunsigned++;
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}
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ptr=listunsigned;
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state=DS_READ_CHUNK_ID;
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break;
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case DS_READ_MATRIX:
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i=0;
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listfloat=ptr;
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while(i<4)
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{
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model->view.V[i].x=*(listfloat++);
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model->view.V[i].y=*(listfloat++);
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model->view.V[i].z=*(listfloat++);
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model->view.V[i++].w=0.0f;
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}
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model->view.V[3].w=1.0f;
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ptr=listfloat;
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state=DS_READ_CHUNK_ID;
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break;
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case DS_READ_DONE:
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break;
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2018-10-30 19:21:18 +01:00
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}
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2018-11-01 01:12:30 +01:00
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2018-10-30 19:21:18 +01:00
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}
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}
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