feat: fonction load3ds terminée pour chargement d'un modèle 3D sans texture, à tester
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include/3d.h
22
include/3d.h
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@ -8,9 +8,9 @@
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typedef struct model3d {
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u8 name[12];
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matrix44 view;
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vector4 **vertexlist;
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vector4 *vertexlist;
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u16 vertexnb;
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u16 **facelist;
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u16 *facelist;
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u16 facenb;
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} model3d __attribute__ ((packed));
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@ -25,13 +25,29 @@ typedef struct vertex3d {
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};
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} vertex3d __attribute__ ((packed));
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void proj(vector4 list[], vertex2d plane[], vector4 origin[], u16 number, float factor);
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void cube(vector4 list[], vector4 *origin, u16 size);
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int load3ds(u8 *pointer,u32 size, model3d *model);
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/*******************************************************************************/
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/* Fichier 3DS */
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typedef enum dsState
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{
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DS_READ_CHUNK_ID,
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DS_READ_CHUNK_LENGTH,
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DS_READ_OBJECT_NAME,
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DS_SKIP_CHUNK,
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DS_READ_POINT_COUNT,
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DS_READ_POINTS,
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DS_READ_FACE_COUNT,
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DS_READ_FACES,
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DS_READ_MATRIX,
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DS_READ_DONE
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} dsState __attribute__ ((packed));
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#define MAIN3DS 0x4D4D
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//>------ Main Chunks
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143
lib/3d.c
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lib/3d.c
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@ -4,6 +4,7 @@
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#include "3d.h"
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#include "types.h"
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#include "video.h"
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#include "string.h"
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/*******************************************************************************/
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/* Crée une projection simple pour test */
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@ -58,35 +59,123 @@ void cube(vector4 list[], vector4 *origin, u16 size)
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/*******************************************************************************/
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/* Charge un fichier 3DS */
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void load3ds(u8 *pointer, model3d *model)
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int load3ds(u8 *pointer,u32 size, model3d *model)
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{
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u16 chunk;
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u32 size;
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bool formatok;
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while(true) {
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chunk=(u16) *(pointer);
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pointer+=2;
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size=(u32) *(pointer);
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pointer+=4;
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switch(chunk)
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{
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case MAIN3DS:
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break;
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case EDIT3DS:
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break;
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case EDIT_OBJECT:
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break;
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case OBJ_TRIMESH:
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break;
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case TRI_VERTEXL:
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break;
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case TRI_FACEL1:
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break;
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case TRI_LOCAL:
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break;
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default:
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break;
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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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}
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}
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}
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@ -429,7 +429,7 @@ int test3d()
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return 1;
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}
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model3d model;
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load3ds(&sphere, &model);
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load3ds(&sphere, sizeof(sphere), &model);
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vector4 list3d[8];
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vertex2d list2d[8];
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matrix44 rotatex,rotatey,rotatez,mrotatex,mrotatey,mrotatez;
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