/* ** $VER: VirginDemo.c 1.1 (02-Feb-1998) ** ** This is an example program for cgx3dvirgin.library ** ** Written by Frank Mariak ** This f***ed triangle clipping done by Michal Bartczak ** ** Copyright © 1996-1998 by phase5 digital products ** All Rights reserved. ** */ #define ADDING 3.14/64 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define DEMO2 #ifndef DEMO1 // textured demo with z-buffering #ifndef DEMO2 // textured demo without z-buffering #ifndef DEMO3 // lit textured demo without z-buffering #ifndef DEMO4 // goroud shaded demo without z-buffering You need to specify at least one of the above defines! #else #ifdef LUTMODE Demo4 does not work in LUTMODE ! #endif #endif #else #ifdef LUTMODE Demo3 does not work in LUTMODE ! #endif #endif #endif #endif #define DISPLAYWIDTH 640 #define DISPLAYHEIGHT 480 #define WINX DISPLAYWIDTH #define WINY DISPLAYHEIGHT #define FOCUS 400.0 // 400.0 #define Up 0x4c #define Left 0x4f #define Down 0x4d #define Right 0x4e #define AUp 0x3e #define ALeft 0x2d #define ADown 0x1e #define ARight 0x2f #define AAxUp 0x1d #define AAxDown 0x3f #define Plus 0x5e #define Minus 0x4a #define Help 0x5f #define esc 0x45 #ifdef LUTMODE #define TEXMAPNAME (STRPTR)"tex128.lut8" #define TEXMAPSIZE 128*128 #else #define TEXMAPNAME (STRPTR)"tex128.argb8888" #define TEXMAPSIZE 128*128*4 #endif void CloseAll(void); void LocalWorld(Triangle3D *,int,float,float,float,int); Triangle3D polydata[] = { #ifdef DEMO1 #include "obj_ring.cdat" #else #include "obj_cylinder.cdat" #endif }; #ifdef LUTMODE ULONG PaletteRGB32[770] = { 0x01000000, 0x00000000,0x00000000,0x00000000, 0x08888888,0x00000000,0x00000000, 0x04444444,0x08888888,0x00000000, 0x08888888,0x08888888,0x08888888, 0x10000000,0x08888888,0x00000000, 0x10000000,0x0CCCCCCC,0x08888888, 0x18888888,0x08888888,0x04444444, 0x08888888,0x18888888,0x0CCCCCCC, 0x18888888,0x10000000,0x08888888, 0x14444444,0x18888888,0x08888888, 0x20000000,0x14444444,0x08888888, 0x10000000,0x20000000,0x0CCCCCCC, 0x1CCCCCCC,0x18888888,0x10000000, 0x28888888,0x10000000,0x08888888, 0x1CCCCCCC,0x20000000,0x10000000, 0x1CCCCCCC,0x20000000,0x14444444, 0x2DDDDDDD,0x18888888,0x08888888, 0x31111111,0x10000000,0x08888888, 0x2DDDDDDD,0x18888888,0x10000000, 0x18888888,0x28888888,0x1CCCCCCC, 0x28888888,0x20000000,0x10000000, 0x2DDDDDDD,0x24444444,0x10000000, 0x24444444,0x28888888,0x18888888, 0x20000000,0x31111111,0x18888888, 0x39999999,0x18888888,0x08888888, 0x24444444,0x28888888,0x20000000, 0x35555555,0x20000000,0x0CCCCCCC, 0x31111111,0x28888888,0x14444444, 0x28888888,0x31111111,0x18888888, 0x39999999,0x20000000,0x10000000, 0x41111111,0x18888888,0x0CCCCCCC, 0x39999999,0x28888888,0x10000000, 0x31111111,0x31111111,0x18888888, 0x39999999,0x2DDDDDDD,0x18888888, 0x35555555,0x31111111,0x20000000, 0x49999999,0x18888888,0x0CCCCCCC, 0x45555555,0x20000000,0x10000000, 0x41111111,0x28888888,0x10000000, 0x31111111,0x31111111,0x28888888, 0x35555555,0x39999999,0x1CCCCCCC, 0x41111111,0x31111111,0x18888888, 0x39999999,0x39999999,0x24444444, 0x51111111,0x18888888,0x0CCCCCCC, 0x51111111,0x20000000,0x10000000, 0x4DDDDDDD,0x28888888,0x10000000, 0x4DDDDDDD,0x2DDDDDDD,0x18888888, 0x45555555,0x35555555,0x1CCCCCCC, 0x41111111,0x39999999,0x24444444, 0x59999999,0x18888888,0x0CCCCCCC, 0x41111111,0x39999999,0x28888888, 0x49999999,0x39999999,0x18888888, 0x39999999,0x41111111,0x28888888, 0x59999999,0x20000000,0x10000000, 0x51111111,0x31111111,0x14444444, 0x49999999,0x39999999,0x20000000, 0x59999999,0x28888888,0x14444444, 0x51111111,0x39999999,0x18888888, 0x41111111,0x41111111,0x2DDDDDDD, 0x51111111,0x3DDDDDDD,0x20000000, 0x59999999,0x31111111,0x14444444, 0x51111111,0x39999999,0x2DDDDDDD, 0x61111111,0x28888888,0x10000000, 0x65555555,0x20000000,0x10000000, 0x51111111,0x41111111,0x24444444, 0x41111111,0x45555555,0x39999999, 0x4DDDDDDD,0x45555555,0x31111111, 0x59999999,0x39999999,0x20000000, 0x61111111,0x31111111,0x18888888, 0x5DDDDDDD,0x39999999,0x18888888, 0x51111111,0x41111111,0x31111111, 0x5DDDDDDD,0x3DDDDDDD,0x20000000, 0x6DDDDDDD,0x28888888,0x14444444, 0x4DDDDDDD,0x49999999,0x31111111, 0x59999999,0x41111111,0x28888888, 0x71111111,0x20000000,0x14444444, 0x69999999,0x31111111,0x14444444, 0x59999999,0x41111111,0x31111111, 0x59999999,0x49999999,0x28888888, 0x71111111,0x28888888,0x18888888, 0x61111111,0x41111111,0x24444444, 0x51111111,0x4DDDDDDD,0x39999999, 0x71111111,0x31111111,0x18888888, 0x6DDDDDDD,0x39999999,0x18888888, 0x59999999,0x49999999,0x35555555, 0x79999999,0x20000000,0x14444444, 0x65555555,0x49999999,0x24444444, 0x6DDDDDDD,0x39999999,0x20000000, 0x79999999,0x28888888,0x14444444, 0x61111111,0x49999999,0x31111111, 0x71111111,0x41111111,0x18888888, 0x51111111,0x51111111,0x45555555, 0x79999999,0x31111111,0x10000000, 0x79999999,0x31111111,0x18888888, 0x59999999,0x51111111,0x3DDDDDDD, 0x71111111,0x41111111,0x24444444, 0x69999999,0x49999999,0x28888888, 0x51111111,0x59999999,0x3DDDDDDD, 0x79999999,0x39999999,0x1CCCCCCC, 0x61111111,0x4DDDDDDD,0x39999999, 0x69999999,0x4DDDDDDD,0x31111111, 0x86666666,0x28888888,0x18888888, 0x79999999,0x41111111,0x20000000, 0x75555555,0x49999999,0x28888888, 0x86666666,0x31111111,0x18888888, 0x86666666,0x2DDDDDDD,0x20000000, 0x65555555,0x51111111,0x3DDDDDDD, 0x5DDDDDDD,0x59999999,0x45555555, 0x82222222,0x39999999,0x18888888, 0x82222222,0x39999999,0x28888888, 0x79999999,0x4DDDDDDD,0x28888888, 0x71111111,0x51111111,0x31111111, 0x65555555,0x59999999,0x3DDDDDDD, 0x69999999,0x51111111,0x45555555, 0x82222222,0x41111111,0x20000000, 0x8EEEEEEE,0x31111111,0x1CCCCCCC, 0x7DDDDDDD,0x51111111,0x28888888, 0x69999999,0x59999999,0x45555555, 0x5DDDDDDD,0x59999999,0x51111111, 0x8EEEEEEE,0x39999999,0x1CCCCCCC, 0x75555555,0x51111111,0x35555555, 0x82222222,0x49999999,0x24444444, 0x75555555,0x59999999,0x31111111, 0x8AAAAAAA,0x41111111,0x20000000, 0x8EEEEEEE,0x39999999,0x28888888, 0x75555555,0x59999999,0x35555555, 0x75555555,0x51111111,0x41111111, 0x61111111,0x61111111,0x4DDDDDDD, 0x6DDDDDDD,0x59999999,0x49999999, 0x86666666,0x51111111,0x2DDDDDDD, 0x75555555,0x59999999,0x3DDDDDDD, 0x96666666,0x3DDDDDDD,0x1CCCCCCC, 0x8EEEEEEE,0x49999999,0x20000000, 0x92222222,0x3DDDDDDD,0x28888888, 0x8EEEEEEE,0x49999999,0x28888888, 0x8AAAAAAA,0x51111111,0x20000000, 0x96666666,0x41111111,0x20000000, 0x69999999,0x61111111,0x4DDDDDDD, 0x86666666,0x59999999,0x35555555, 0x92222222,0x49999999,0x20000000, 0x79999999,0x61111111,0x41111111, 0x92222222,0x51111111,0x24444444, 0x79999999,0x61111111,0x49999999, 0x8EEEEEEE,0x59999999,0x28888888, 0x71111111,0x61111111,0x51111111, 0x92222222,0x51111111,0x28888888, 0x9AAAAAAA,0x49999999,0x24444444, 0x86666666,0x61111111,0x35555555, 0x92222222,0x59999999,0x2DDDDDDD, 0x75555555,0x69999999,0x51111111, 0x86666666,0x61111111,0x45555555, 0x92222222,0x59999999,0x35555555, 0x79999999,0x61111111,0x55555555, 0x8AAAAAAA,0x61111111,0x39999999, 0x9EEEEEEE,0x51111111,0x20000000, 0x71111111,0x69999999,0x59999999, 0x9EEEEEEE,0x49999999,0x2DDDDDDD, 0x9EEEEEEE,0x51111111,0x28888888, 0x8AAAAAAA,0x65555555,0x41111111, 0x7DDDDDDD,0x65555555,0x51111111, 0x96666666,0x59999999,0x39999999, 0x96666666,0x61111111,0x2DDDDDDD, 0x9EEEEEEE,0x59999999,0x28888888, 0x79999999,0x69999999,0x59999999, 0x8AAAAAAA,0x69999999,0x45555555, 0x82222222,0x69999999,0x51111111, 0x79999999,0x69999999,0x61111111, 0x9EEEEEEE,0x61111111,0x2DDDDDDD, 0x9AAAAAAA,0x69999999,0x2DDDDDDD, 0x8AAAAAAA,0x69999999,0x4DDDDDDD, 0x82222222,0x69999999,0x59999999, 0x9AAAAAAA,0x69999999,0x35555555, 0x9EEEEEEE,0x69999999,0x31111111, 0x9AAAAAAA,0x69999999,0x3DDDDDDD, 0x75555555,0x71111111,0x69999999, 0x8AAAAAAA,0x71111111,0x51111111, 0x8EEEEEEE,0x69999999,0x59999999, 0x9AAAAAAA,0x71111111,0x31111111, 0x86666666,0x71111111,0x61111111, 0x9AAAAAAA,0x69999999,0x45555555, 0xA6666666,0x6DDDDDDD,0x28888888, 0x9EEEEEEE,0x71111111,0x39999999, 0x8EEEEEEE,0x71111111,0x59999999, 0x9AAAAAAA,0x71111111,0x45555555, 0x82222222,0x79999999,0x65555555, 0xA2222222,0x75555555,0x31111111, 0x8EEEEEEE,0x71111111,0x5DDDDDDD, 0x9AAAAAAA,0x71111111,0x4DDDDDDD, 0xA2222222,0x75555555,0x39999999, 0x9EEEEEEE,0x79999999,0x3DDDDDDD, 0x82222222,0x79999999,0x6DDDDDDD, 0x8AAAAAAA,0x79999999,0x65555555, 0x9AAAAAAA,0x79999999,0x49999999, 0x9AAAAAAA,0x79999999,0x51111111, 0x96666666,0x79999999,0x59999999, 0xA6666666,0x79999999,0x3DDDDDDD, 0x8EEEEEEE,0x79999999,0x6DDDDDDD, 0x96666666,0x79999999,0x61111111, 0x92222222,0x86666666,0x5DDDDDDD, 0xA2222222,0x82222222,0x49999999, 0xA6666666,0x79999999,0x4DDDDDDD, 0x96666666,0x79999999,0x6DDDDDDD, 0xA6666666,0x86666666,0x41111111, 0x92222222,0x82222222,0x69999999, 0x9EEEEEEE,0x82222222,0x59999999, 0xA6666666,0x86666666,0x49999999, 0xA2222222,0x86666666,0x51111111, 0x92222222,0x82222222,0x6DDDDDDD, 0xAAAAAAAA,0x8AAAAAAA,0x41111111, 0x9EEEEEEE,0x86666666,0x5DDDDDDD, 0x92222222,0x7DDDDDDD,0x79999999, 0x96666666,0x86666666,0x71111111, 0xAAAAAAAA,0x8AAAAAAA,0x45555555, 0x9EEEEEEE,0x86666666,0x69999999, 0x92222222,0x86666666,0x79999999, 0xAAAAAAAA,0x8AAAAAAA,0x4DDDDDDD, 0xA2222222,0x8EEEEEEE,0x59999999, 0x9EEEEEEE,0x86666666,0x6DDDDDDD, 0x92222222,0x8EEEEEEE,0x7DDDDDDD, 0xAAAAAAAA,0x96666666,0x4DDDDDDD, 0xA2222222,0x8EEEEEEE,0x65555555, 0x9EEEEEEE,0x8AAAAAAA,0x75555555, 0xAAAAAAAA,0x92222222,0x59999999, 0xAAAAAAAA,0x9AAAAAAA,0x51111111, 0x9EEEEEEE,0x8EEEEEEE,0x79999999, 0xA6666666,0x92222222,0x69999999, 0x92222222,0x8EEEEEEE,0x86666666, 0xA6666666,0x9AAAAAAA,0x61111111, 0x9EEEEEEE,0x8EEEEEEE,0x7DDDDDDD, 0xA2222222,0x96666666,0x71111111, 0xAAAAAAAA,0x9AAAAAAA,0x69999999, 0x9EEEEEEE,0x92222222,0x86666666, 0xA6666666,0x96666666,0x7DDDDDDD, 0xA6666666,0x9EEEEEEE,0x75555555, 0xAEEEEEEE,0x9EEEEEEE,0x69999999, 0xAAAAAAAA,0x9EEEEEEE,0x75555555, 0xA2222222,0x9AAAAAAA,0x8AAAAAAA, 0xAAAAAAAA,0xA6666666,0x75555555, 0xB2222222,0xA6666666,0x69999999, 0xAAAAAAAA,0x9AAAAAAA,0x8AAAAAAA, 0xB2222222,0xA6666666,0x75555555, 0xAAAAAAAA,0xA6666666,0x82222222, 0xA2222222,0x9EEEEEEE,0x96666666, 0xAEEEEEEE,0x9EEEEEEE,0x8EEEEEEE, 0xAAAAAAAA,0xA6666666,0x8AAAAAAA, 0xAAAAAAAA,0xA6666666,0x96666666, 0xA2222222,0xAEEEEEEE,0xA6666666, 0xAEEEEEEE,0xAEEEEEEE,0x9AAAAAAA, 0xB6666666,0xAAAAAAAA,0x96666666, 0xAEEEEEEE,0xAEEEEEEE,0xA6666666, 0xB6666666,0xB2222222,0x9EEEEEEE, 0xB2222222,0xB2222222,0xA6666666, 0xAEEEEEEE,0xB6666666,0xAEEEEEEE, 0xB2222222,0xBEEEEEEE,0xAEEEEEEE, 0xB2222222,0xBEEEEEEE,0xB2222222, 0xB6666666,0xC6666666,0xB6666666, 0xBAAAAAAA,0xC6666666,0xBEEEEEEE, 0x00000000 }; #endif #define NPOLY ((sizeof(polydata)/sizeof(Triangle3D))) struct IntuitionBase *IntuitionBase = NULL; struct GfxBase *GfxBase = NULL; struct Library *CyberGfxBase = NULL; struct Library *CGX3DVirginBase=0; struct Library *LowLevelBase=0; View3D v3d=0; TexHandle th=0; UBYTE BufNum=0; APTR TexelMap=0; void main(int argc,char *argv[]) { float wz=0.0,wx=0.0,wy=0.0; int gz = 2000; struct ExecBase *ExecBase=(struct ExecBase *)*((ULONG *)4L); struct MsgPort *eventmp; BOOL Update=FALSE; struct IntuiMessage *msg = NULL; #ifdef _M68881 if(!(ExecBase->AttnFlags & AFF_68881)) { printf("You need at least a 68881 floating point unit !\n"); return; } #endif if (!(IntuitionBase=(struct IntuitionBase *)OpenLibrary("intuition.library",39L))) { printf ("ERROR: Couldn't open intuition.library\n"); CloseAll(); } if (!(GfxBase=(struct GfxBase *)OpenLibrary("graphics.library",39L))) { printf ("ERROR: Couldn't open graphics.library\n"); CloseAll(); } if (!(CyberGfxBase=(struct Library *)OpenLibrary("cybergraphics.library",41L))) { printf ("ERROR: Couldn't open cybergraphics.library\n"); CloseAll(); } if (!(CGX3DVirginBase=(struct Library *)OpenLibrary("cgx3dvirgin.library",2L))) { printf ("ERROR: Couldn't open cgx3dvirgin.library v2\n"); CloseAll(); } if(LowLevelBase = OpenLibrary("lowlevel.library",40L)) { SetJoyPortAttrs(1L, SJA_Type, SJA_TYPE_GAMECTLR, TAG_DONE); } #ifndef DEMO4 if(TexelMap = AllocVec(TEXMAPSIZE,MEMF_CLEAR)) { BPTR fh; ULONG i; if(fh=Open(TEXMAPNAME,MODE_OLDFILE)) { Read(fh,TexelMap,TEXMAPSIZE); Close(fh); } else { printf("Unable to load texture datafile !\n"); CloseAll(); } for (i=0;imp_SigBit); if(LowLevelBase) { ULONG state; state=ReadJoyPort(1L); if(state & JP_TYPE_GAMECTLR) { if(state & (JP_BUTTON_MASK|JP_DIRECTION_MASK)) { if(state & JPF_JOY_UP) { wx+= ADDING; Update = TRUE; } if(state & JPF_JOY_DOWN) { wx-= ADDING; Update = TRUE; } if(state & JPF_JOY_LEFT) { wy-= ADDING; Update = TRUE; } if(state & JPF_JOY_RIGHT) { wy+= ADDING; Update = TRUE; } if(state & JPF_BUTTON_FORWARD) { if( gz > 600) { gz-= 50; Update = TRUE; } } if(state & JPF_BUTTON_REVERSE) { gz+= 50; Update = TRUE; } if(state & JPF_BUTTON_GREEN) { wz+= ADDING; Update = TRUE; } if(state & JPF_BUTTON_YELLOW) { wz-= ADDING; Update = TRUE; } } } } while(msg=(struct IntuiMessage *)GetMsg(eventmp)) { switch(msg->Class) { case IDCMP_INTUITICKS: { } break; case IDCMP_RAWKEY: { int Code=msg->Code; if(!(Code & 0x80)) { Code&=0x7f; switch(Code) { case Up : wx+= ADDING; Update=TRUE; break; case Down : wx-= ADDING; Update=TRUE; break; case Right: wy+= ADDING; Update=TRUE; break; case Left : wy-= ADDING; Update=TRUE; break; case AUp : wx+= ADDING; Update=TRUE; break; case ADown : wx-= ADDING; Update=TRUE; break; case ARight: wy+= ADDING; Update=TRUE; break; case ALeft : wy-= ADDING; Update=TRUE; break; case AAxUp : wz+= ADDING; Update=TRUE; break; case AAxDown : wz-= ADDING; Update=TRUE; break; case Plus : if( gz > 200) { gz-= 50; Update=TRUE; } break; case Minus : gz+= 50; Update=TRUE; break; case esc: CloseAll(); } } break; }; } ReplyMsg((struct Message *)msg); } if(Update==TRUE) LocalWorld(polydata,NPOLY,wx,wy,wz,gz); Update=FALSE; } CloseAll(); } /***********************************************************************************\ * * * CloseAll * * * \***********************************************************************************/ void CloseAll() { if(th) V3D_DeleteTexHandle(th); if(TexelMap) FreeVec(TexelMap); if(v3d) V3D_CloseView(v3d); if (IntuitionBase) CloseLibrary ((struct Library *)IntuitionBase); if (GfxBase) CloseLibrary ((struct Library *)GfxBase); if (CGX3DVirginBase) CloseLibrary ((struct Library *)CGX3DVirginBase); if (CyberGfxBase) CloseLibrary ((struct Library *)CyberGfxBase); if (LowLevelBase) CloseLibrary ((struct Library *)LowLevelBase); exit(0); } /* Most important function AT ALL ;) */ /* Returns TRUE if line was clipped, elsewhere returns false */ BOOL LeftClipping(long *xs, long *ys, long *xe, long *ye, long *us, long *vs, long *ue, long *ve) { LONG adding; if(*xs<0) { if(*xe>0) { if(*xe-*xs) { adding = ((*ue-*us)<<20) / (*xe-*xs); *us += (-*xs * adding)>>20; adding = ((*ve-*vs)<<20) / (*xe-*xs); *vs += (-*xs * adding)>>20; adding = ((*ye-*ys)<<20) / (*xe-*xs); *ys += (-*xs * adding)>>20; *xs = 0; } return(TRUE); } else { return(FALSE); } } } /* Whole wizardry ;) */ long V3D_DrawClippedTriangle3D(View3D v3d, Triangle3D *t3d, ULONG blendmd) { long hx,hy,hu,hv; if((t3d->p1.x<0) && (t3d->p2.x<0) && (t3d->p3.x>=0)) { LeftClipping(&t3d->p1.x, &t3d->p1.y, &t3d->p3.x, &t3d->p3.y, &t3d->p1.u, &t3d->p1.v, &t3d->p3.u, &t3d->p3.v); LeftClipping(&t3d->p2.x, &t3d->p2.y, &t3d->p3.x, &t3d->p3.y, &t3d->p2.u, &t3d->p2.v, &t3d->p3.u, &t3d->p3.v); V3D_DrawTriangle3D(v3d, t3d, blendmd); return(0); } if((t3d->p2.x<0) && (t3d->p3.x<0) && (t3d->p1.x>=0)) { LeftClipping(&t3d->p2.x, &t3d->p2.y, &t3d->p1.x, &t3d->p1.y, &t3d->p2.u, &t3d->p2.v, &t3d->p1.u, &t3d->p1.v); LeftClipping(&t3d->p3.x, &t3d->p3.y, &t3d->p1.x, &t3d->p1.y, &t3d->p3.u, &t3d->p3.v, &t3d->p1.u, &t3d->p1.v); V3D_DrawTriangle3D(v3d, t3d, blendmd); return(0); } if((t3d->p1.x<0) && (t3d->p3.x<0) && (t3d->p2.x>=0)) { LeftClipping(&t3d->p1.x, &t3d->p1.y, &t3d->p2.x, &t3d->p2.y, &t3d->p1.u, &t3d->p1.v, &t3d->p2.u, &t3d->p2.v); LeftClipping(&t3d->p3.x, &t3d->p3.y, &t3d->p2.x, &t3d->p2.y, &t3d->p3.u, &t3d->p3.v, &t3d->p2.u, &t3d->p2.v); V3D_DrawTriangle3D(v3d, t3d, blendmd); return(0); } if((t3d->p1.x>=0) && (t3d->p3.x>=0) && (t3d->p2.x>=0)) { V3D_DrawTriangle3D(v3d, t3d, blendmd); return(0); } if((t3d->p1.x<0) && (t3d->p2.x>=0) && (t3d->p3.x>=0)) { hx = t3d->p1.x; hy = t3d->p1.y; hu = t3d->p1.u; hv = t3d->p1.v; LeftClipping(&t3d->p1.x, &t3d->p1.y, &t3d->p2.x, &t3d->p2.y, &t3d->p1.u, &t3d->p1.v, &t3d->p2.u, &t3d->p2.v); V3D_DrawTriangle3D(v3d, t3d, blendmd); t3d->p2.x = hx; t3d->p2.y = hy; t3d->p2.u = hu; t3d->p2.v = hv; LeftClipping(&t3d->p2.x, &t3d->p2.y, &t3d->p3.x, &t3d->p3.y, &t3d->p2.u, &t3d->p2.v, &t3d->p3.u, &t3d->p3.v); V3D_DrawTriangle3D(v3d, t3d, blendmd); return(0); } if((t3d->p1.x>=0) && (t3d->p2.x<0) && (t3d->p3.x>=0)) { hx = t3d->p2.x; hy = t3d->p2.y; hu = t3d->p2.u; hv = t3d->p2.v; LeftClipping(&t3d->p2.x, &t3d->p2.y, &t3d->p1.x, &t3d->p1.y, &t3d->p2.u, &t3d->p2.v, &t3d->p1.u, &t3d->p1.v); V3D_DrawTriangle3D(v3d, t3d, blendmd); t3d->p1.x = hx; t3d->p1.y = hy; t3d->p1.u = hu; t3d->p1.v = hv; LeftClipping(&t3d->p1.x, &t3d->p1.y, &t3d->p3.x, &t3d->p3.y, &t3d->p1.u, &t3d->p1.v, &t3d->p3.u, &t3d->p3.v); V3D_DrawTriangle3D(v3d, t3d, blendmd); return(0); } if((t3d->p1.x>=0) && (t3d->p2.x>=0) && (t3d->p3.x<0)) { hx = t3d->p3.x; hy = t3d->p3.y; hu = t3d->p3.u; hv = t3d->p3.v; LeftClipping(&t3d->p3.x, &t3d->p3.y, &t3d->p1.x, &t3d->p1.y, &t3d->p3.u, &t3d->p3.v, &t3d->p1.u, &t3d->p1.v); V3D_DrawTriangle3D(v3d, t3d, blendmd); t3d->p1.x = hx; t3d->p1.y = hy; t3d->p1.u = hu; t3d->p1.v = hv; LeftClipping(&t3d->p1.x, &t3d->p1.y, &t3d->p2.x, &t3d->p2.y, &t3d->p1.u, &t3d->p1.v, &t3d->p2.u, &t3d->p2.v); V3D_DrawTriangle3D(v3d, t3d, blendmd); return(0); } } void LocalWorld(Triangle3D in[],int cnt,float wx,float wy,float wz,int z) { int i; float cosx,sinx,cosy,siny,cosz,sinz; Triangle3D zws1,zws2,zws3; cosx = cos(wx); sinx = sin(wx); cosy = cos(wy); siny = sin(wy); cosz = cos(wz); sinz = sin(wz); if(V3D_LockView(v3d)) { V3D_ClearBuffer(v3d,BufNum); #ifdef DEMO1 V3D_ClearZBuffer(v3d); #endif for (i=0;i