481 lines
14 KiB
C++
481 lines
14 KiB
C++
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/******************************************************************************
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Plush Version 1.2
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make.c
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Object Primitives
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Copyright (c) 1996-2000, Justin Frankel
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*******************************************************************************
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Notes:
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Most of these routines are highly unoptimized.
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They could all use some work, such as more capable divisions (Box is
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most notable), etc... The mapping coordinates are all set up nicely,
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though.
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******************************************************************************/
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#include "plush.h"
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pl_Obj *plMakeTorus(pl_Float r1, pl_Float r2, pl_uInt divrot, pl_uInt divrad,
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pl_Mat *m) {
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pl_Obj *o;
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pl_Vertex *v;
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pl_Face *f;
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pl_uInt x, y;
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double ravg, rt, a, da, al, dal;
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pl_sInt32 U,V,dU,dV;
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if (divrot < 3) divrot = 3;
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if (divrad < 3) divrad = 3;
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ravg = (r1+r2)*0.5;
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rt = (r2-r1)*0.5;
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o = plObjCreate(divrad*divrot,divrad*divrot*2);
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if (!o) return 0;
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v = o->Vertices;
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a = 0.0;
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da = 2*PL_PI/divrot;
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for (y = 0; y < divrot; y ++) {
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al = 0.0;
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dal = 2*PL_PI/divrad;
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for (x = 0; x < divrad; x ++) {
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v->x = (pl_Float) (cos((double) a)*(ravg + cos((double) al)*rt));
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v->z = (pl_Float) (sin((double) a)*(ravg + cos((double) al)*rt));
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v->y = (pl_Float) (sin((double) al)*rt);
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v++;
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al += dal;
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}
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a += da;
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}
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v = o->Vertices;
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f = o->Faces;
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dV = 65535/divrad;
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dU = 65535/divrot;
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U = 0;
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for (y = 0; y < divrot; y ++) {
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V = -32768;
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for (x = 0; x < divrad; x ++) {
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f->Vertices[0] = v+x+y*divrad;
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f->MappingU[0] = U;
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f->MappingV[0] = V;
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f->Vertices[1] = v+(x+1==divrad?0:x+1)+y*divrad;
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f->MappingU[1] = U;
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f->MappingV[1] = V+dV;
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f->Vertices[2] = v+x+(y+1==divrot?0:(y+1)*divrad);
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f->MappingU[2] = U+dU;
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f->MappingV[2] = V;
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f->Material = m;
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f++;
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f->Vertices[0] = v+x+(y+1==divrot?0:(y+1)*divrad);
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f->MappingU[0] = U+dU;
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f->MappingV[0] = V;
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f->Vertices[1] = v+(x+1==divrad?0:x+1)+y*divrad;
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f->MappingU[1] = U;
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f->MappingV[1] = V+dV;
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f->Vertices[2] = v+(x+1==divrad?0:x+1)+(y+1==divrot?0:(y+1)*divrad);
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f->MappingU[2] = U+dU;
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f->MappingV[2] = V+dV;
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f->Material = m;
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f++;
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V += dV;
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}
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U += dU;
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}
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plObjCalcNormals(o);
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return (o);
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}
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pl_Obj *plMakeSphere(pl_Float r, pl_uInt divr, pl_uInt divh, pl_Mat *m) {
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pl_Obj *o;
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pl_Vertex *v;
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pl_Face *f;
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pl_uInt x, y;
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double a, da, yp, ya, yda, yf;
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pl_sInt32 U,V,dU,dV;
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if (divh < 3) divh = 3;
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if (divr < 3) divr = 3;
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o = plObjCreate(2+(divh-2)*(divr),2*divr+(divh-3)*divr*2);
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if (!o) return 0;
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v = o->Vertices;
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v->x = v->z = 0.0; v->y = r; v++;
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v->x = v->z = 0.0; v->y = -r; v++;
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ya = 0.0;
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yda = PL_PI/(divh-1);
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da = (PL_PI*2.0)/divr;
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for (y = 0; y < divh - 2; y ++) {
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ya += yda;
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yp = cos((double) ya)*r;
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yf = sin((double) ya)*r;
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a = 0.0;
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for (x = 0; x < divr; x ++) {
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v->y = (pl_Float) yp;
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v->x = (pl_Float) (cos((double) a)*yf);
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v->z = (pl_Float) (sin((double) a)*yf);
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v++;
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a += da;
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}
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}
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f = o->Faces;
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v = o->Vertices + 2;
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a = 0.0;
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U = 0;
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dU = 65535/divr;
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dV = V = 65535/divh;
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for (x = 0; x < divr; x ++) {
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f->Vertices[0] = o->Vertices;
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f->Vertices[1] = v + (x+1==divr ? 0 : x+1);
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f->Vertices[2] = v + x;
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f->MappingU[0] = U;
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f->MappingV[0] = 0;
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f->MappingU[1] = U+dU;
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f->MappingV[1] = V;
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f->MappingU[2] = U;
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f->MappingV[2] = V;
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f->Material = m;
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f++;
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U += dU;
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}
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da = 1.0/(divr+1);
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v = o->Vertices + 2;
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for (x = 0; x < (divh-3); x ++) {
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U = 0;
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for (y = 0; y < divr; y ++) {
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f->Vertices[0] = v+y;
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f->Vertices[1] = v+divr+(y+1==divr?0:y+1);
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f->Vertices[2] = v+y+divr;
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f->MappingU[0] = U;
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f->MappingV[0] = V;
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f->MappingU[1] = U+dU;
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f->MappingV[1] = V+dV;
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f->MappingU[2] = U;
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f->MappingV[2] = V+dV;
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f->Material = m; f++;
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f->Vertices[0] = v+y;
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f->Vertices[1] = v+(y+1==divr?0:y+1);
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f->Vertices[2] = v+(y+1==divr?0:y+1)+divr;
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f->MappingU[0] = U;
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f->MappingV[0] = V;
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f->MappingU[1] = U+dU;
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f->MappingV[1] = V;
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f->MappingU[2] = U+dU;
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f->MappingV[2] = V+dV;
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f->Material = m; f++;
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U += dU;
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}
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V += dV;
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v += divr;
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}
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v = o->Vertices + o->NumVertices - divr;
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U = 0;
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for (x = 0; x < divr; x ++) {
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f->Vertices[0] = o->Vertices + 1;
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f->Vertices[1] = v + x;
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f->Vertices[2] = v + (x+1==divr ? 0 : x+1);
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f->MappingU[0] = U;
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f->MappingV[0] = 65535;
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f->MappingU[1] = U;
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f->MappingV[1] = V;
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f->MappingU[2] = U+dU;
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f->MappingV[2] = V;
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f->Material = m;
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f++;
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U += dU;
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}
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plObjCalcNormals(o);
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return (o);
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}
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pl_Obj *plMakeCylinder(pl_Float r, pl_Float h, pl_uInt divr, pl_Bool captop,
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pl_Bool capbottom, pl_Mat *m) {
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pl_Obj *o;
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pl_Vertex *v, *topverts, *bottomverts, *topcapvert=0, *bottomcapvert=0;
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pl_Face *f;
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pl_uInt32 i;
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double a, da;
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if (divr < 3) divr = 3;
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o = plObjCreate(divr*2+((divr==3)?0:(captop?1:0)+(capbottom?1:0)),
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divr*2+(divr==3 ? (captop ? 1 : 0) + (capbottom ? 1 : 0) :
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(captop ? divr : 0) + (capbottom ? divr : 0)));
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if (!o) return 0;
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a = 0.0;
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da = (2.0*PL_PI)/divr;
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v = o->Vertices;
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topverts = v;
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for (i = 0; i < divr; i ++) {
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v->y = h/2.0f;
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v->x = (pl_Float) (r*cos((double) a));
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v->z = (pl_Float)(r*sin(a));
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v->xformedx = (pl_Float) (32768.0 + (32768.0*cos((double) a))); // temp
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v->xformedy = (pl_Float) (32768.0 + (32768.0*sin((double) a))); // use xf
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v++;
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a += da;
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}
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bottomverts = v;
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a = 0.0;
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for (i = 0; i < divr; i ++) {
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v->y = -h/2.0f;
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v->x = (pl_Float) (r*cos((double) a));
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v->z = (pl_Float) (r*sin(a));
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v->xformedx = (pl_Float) (32768.0 + (32768.0*cos((double) a)));
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v->xformedy = (pl_Float) (32768.0 + (32768.0*sin((double) a)));
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v++; a += da;
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}
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if (captop && divr != 3) {
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topcapvert = v;
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v->y = h / 2.0f;
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v->x = v->z = 0.0f;
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v++;
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}
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if (capbottom && divr != 3) {
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bottomcapvert = v;
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v->y = -h / 2.0f;
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v->x = v->z = 0.0f;
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v++;
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}
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f = o->Faces;
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for (i = 0; i < divr; i ++) {
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f->Vertices[0] = bottomverts + i;
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f->Vertices[1] = topverts + i;
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f->Vertices[2] = bottomverts + (i == divr-1 ? 0 : i+1);
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f->MappingV[0] = f->MappingV[2] = 65535; f->MappingV[1] = 0;
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f->MappingU[0] = f->MappingU[1] = (i<<16)/divr;
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f->MappingU[2] = ((i+1)<<16)/divr;
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f->Material = m; f++;
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f->Vertices[0] = bottomverts + (i == divr-1 ? 0 : i+1);
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f->Vertices[1] = topverts + i;
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f->Vertices[2] = topverts + (i == divr-1 ? 0 : i+1);
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f->MappingV[1] = f->MappingV[2] = 0; f->MappingV[0] = 65535;
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f->MappingU[0] = f->MappingU[2] = ((i+1)<<16)/divr;
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f->MappingU[1] = (i<<16)/divr;
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f->Material = m; f++;
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}
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if (captop) {
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if (divr == 3) {
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f->Vertices[0] = topverts + 0;
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f->Vertices[1] = topverts + 2;
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f->Vertices[2] = topverts + 1;
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f->MappingU[0] = (pl_sInt32) topverts[0].xformedx;
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f->MappingV[0] = (pl_sInt32) topverts[0].xformedy;
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f->MappingU[1] = (pl_sInt32) topverts[1].xformedx;
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f->MappingV[1] = (pl_sInt32) topverts[1].xformedy;
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f->MappingU[2] = (pl_sInt32) topverts[2].xformedx;
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f->MappingV[2] = (pl_sInt32) topverts[2].xformedy;
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f->Material = m; f++;
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} else {
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for (i = 0; i < divr; i ++) {
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f->Vertices[0] = topverts + (i == divr-1 ? 0 : i + 1);
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f->Vertices[1] = topverts + i;
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f->Vertices[2] = topcapvert;
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f->MappingU[0] = (pl_sInt32) topverts[(i==divr-1?0:i+1)].xformedx;
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f->MappingV[0] = (pl_sInt32) topverts[(i==divr-1?0:i+1)].xformedy;
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f->MappingU[1] = (pl_sInt32) topverts[i].xformedx;
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f->MappingV[1] = (pl_sInt32) topverts[i].xformedy;
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f->MappingU[2] = f->MappingV[2] = 32768;
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f->Material = m; f++;
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}
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}
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}
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if (capbottom) {
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if (divr == 3) {
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f->Vertices[0] = bottomverts + 0;
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f->Vertices[1] = bottomverts + 1;
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f->Vertices[2] = bottomverts + 2;
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f->MappingU[0] = (pl_sInt32) bottomverts[0].xformedx;
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f->MappingV[0] = (pl_sInt32) bottomverts[0].xformedy;
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f->MappingU[1] = (pl_sInt32) bottomverts[1].xformedx;
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f->MappingV[1] = (pl_sInt32) bottomverts[1].xformedy;
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f->MappingU[2] = (pl_sInt32) bottomverts[2].xformedx;
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f->MappingV[2] = (pl_sInt32) bottomverts[2].xformedy;
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f->Material = m; f++;
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} else {
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for (i = 0; i < divr; i ++) {
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f->Vertices[0] = bottomverts + i;
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f->Vertices[1] = bottomverts + (i == divr-1 ? 0 : i + 1);
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f->Vertices[2] = bottomcapvert;
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f->MappingU[0] = (pl_sInt32) bottomverts[i].xformedx;
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f->MappingV[0] = (pl_sInt32) bottomverts[i].xformedy;
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f->MappingU[1] = (pl_sInt32) bottomverts[(i==divr-1?0:i+1)].xformedx;
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f->MappingV[1] = (pl_sInt32) bottomverts[(i==divr-1?0:i+1)].xformedy;
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f->MappingU[2] = f->MappingV[2] = 32768;
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f->Material = m; f++;
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}
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}
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}
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plObjCalcNormals(o);
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return (o);
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}
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pl_Obj *plMakeCone(pl_Float r, pl_Float h, pl_uInt div,
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pl_Bool cap, pl_Mat *m) {
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pl_Obj *o;
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pl_Vertex *v;
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pl_Face *f;
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pl_uInt32 i;
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double a, da;
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if (div < 3) div = 3;
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o = plObjCreate(div + (div == 3 ? 1 : (cap ? 2 : 1)),
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div + (div == 3 ? 1 : (cap ? div : 0)));
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if (!o) return 0;
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v = o->Vertices;
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|
|
v->x = v->z = 0; v->y = h/2;
|
||
|
|
v->xformedx = 1<<15;
|
||
|
|
v->xformedy = 1<<15;
|
||
|
|
v++;
|
||
|
|
a = 0.0;
|
||
|
|
da = (2.0*PL_PI)/div;
|
||
|
|
for (i = 1; i <= div; i ++) {
|
||
|
|
v->y = h/-2.0f;
|
||
|
|
v->x = (pl_Float) (r*cos((double) a));
|
||
|
|
v->z = (pl_Float) (r*sin((double) a));
|
||
|
|
v->xformedx = (pl_Float) (32768.0 + (cos((double) a)*32768.0));
|
||
|
|
v->xformedy = (pl_Float) (32768.0 + (sin((double) a)*32768.0));
|
||
|
|
a += da;
|
||
|
|
v++;
|
||
|
|
}
|
||
|
|
if (cap && div != 3) {
|
||
|
|
v->y = h / -2.0f;
|
||
|
|
v->x = v->z = 0.0f;
|
||
|
|
v->xformedx = (pl_Float) (1<<15);
|
||
|
|
v->xformedy = (pl_Float) (1<<15);
|
||
|
|
v++;
|
||
|
|
}
|
||
|
|
f = o->Faces;
|
||
|
|
for (i = 1; i <= div; i ++) {
|
||
|
|
f->Vertices[0] = o->Vertices;
|
||
|
|
f->Vertices[1] = o->Vertices + (i == div ? 1 : i + 1);
|
||
|
|
f->Vertices[2] = o->Vertices + i;
|
||
|
|
f->MappingU[0] = (pl_sInt32) o->Vertices[0].xformedx;
|
||
|
|
f->MappingV[0] = (pl_sInt32) o->Vertices[0].xformedy;
|
||
|
|
f->MappingU[1] = (pl_sInt32) o->Vertices[(i==div?1:i+1)].xformedx;
|
||
|
|
f->MappingV[1] = (pl_sInt32) o->Vertices[(i==div?1:i+1)].xformedy;
|
||
|
|
f->MappingU[2] = (pl_sInt32) o->Vertices[i].xformedx;
|
||
|
|
f->MappingV[2] = (pl_sInt32) o->Vertices[i].xformedy;
|
||
|
|
f->Material = m;
|
||
|
|
f++;
|
||
|
|
}
|
||
|
|
if (cap) {
|
||
|
|
if (div == 3) {
|
||
|
|
f->Vertices[0] = o->Vertices + 1;
|
||
|
|
f->Vertices[1] = o->Vertices + 2;
|
||
|
|
f->Vertices[2] = o->Vertices + 3;
|
||
|
|
f->MappingU[0] = (pl_sInt32) o->Vertices[1].xformedx;
|
||
|
|
f->MappingV[0] = (pl_sInt32) o->Vertices[1].xformedy;
|
||
|
|
f->MappingU[1] = (pl_sInt32) o->Vertices[2].xformedx;
|
||
|
|
f->MappingV[1] = (pl_sInt32) o->Vertices[2].xformedy;
|
||
|
|
f->MappingU[2] = (pl_sInt32) o->Vertices[3].xformedx;
|
||
|
|
f->MappingV[2] = (pl_sInt32) o->Vertices[3].xformedy;
|
||
|
|
f->Material = m;
|
||
|
|
f++;
|
||
|
|
} else {
|
||
|
|
for (i = 1; i <= div; i ++) {
|
||
|
|
f->Vertices[0] = o->Vertices + div + 1;
|
||
|
|
f->Vertices[1] = o->Vertices + i;
|
||
|
|
f->Vertices[2] = o->Vertices + (i==div ? 1 : i+1);
|
||
|
|
f->MappingU[0] = (pl_sInt32) o->Vertices[div+1].xformedx;
|
||
|
|
f->MappingV[0] = (pl_sInt32) o->Vertices[div+1].xformedy;
|
||
|
|
f->MappingU[1] = (pl_sInt32) o->Vertices[i].xformedx;
|
||
|
|
f->MappingV[1] = (pl_sInt32) o->Vertices[i].xformedy;
|
||
|
|
f->MappingU[2] = (pl_sInt32) o->Vertices[i==div?1:i+1].xformedx;
|
||
|
|
f->MappingV[2] = (pl_sInt32) o->Vertices[i==div?1:i+1].xformedy;
|
||
|
|
f->Material = m;
|
||
|
|
f++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
plObjCalcNormals(o);
|
||
|
|
return (o);
|
||
|
|
}
|
||
|
|
|
||
|
|
static pl_uChar verts[6*6] = {
|
||
|
|
0,4,1, 1,4,5, 0,1,2, 3,2,1, 2,3,6, 3,7,6,
|
||
|
|
6,7,4, 4,7,5, 1,7,3, 7,1,5, 2,6,0, 4,0,6
|
||
|
|
};
|
||
|
|
static pl_uChar map[24*2*3] = {
|
||
|
|
1,0, 1,1, 0,0, 0,0, 1,1, 0,1,
|
||
|
|
0,0, 1,0, 0,1, 1,1, 0,1, 1,0,
|
||
|
|
0,0, 1,0, 0,1, 1,0, 1,1, 0,1,
|
||
|
|
0,0, 1,0, 0,1, 0,1, 1,0, 1,1,
|
||
|
|
1,0, 0,1, 0,0, 0,1, 1,0, 1,1,
|
||
|
|
1,0, 1,1, 0,0, 0,1, 0,0, 1,1
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
pl_Obj *plMakeBox(pl_Float w, pl_Float d, pl_Float h, pl_Mat *m) {
|
||
|
|
pl_uChar *mm = map;
|
||
|
|
pl_uChar *vv = verts;
|
||
|
|
pl_Obj *o;
|
||
|
|
pl_Vertex *v;
|
||
|
|
pl_Face *f;
|
||
|
|
pl_uInt x;
|
||
|
|
o = plObjCreate(8,12);
|
||
|
|
if (!o) return 0;
|
||
|
|
v = o->Vertices;
|
||
|
|
v->x = -w/2; v->y = h/2; v->z = d/2; v++;
|
||
|
|
v->x = w/2; v->y = h/2; v->z = d/2; v++;
|
||
|
|
v->x = -w/2; v->y = h/2; v->z = -d/2; v++;
|
||
|
|
v->x = w/2; v->y = h/2; v->z = -d/2; v++;
|
||
|
|
v->x = -w/2; v->y = -h/2; v->z = d/2; v++;
|
||
|
|
v->x = w/2; v->y = -h/2; v->z = d/2; v++;
|
||
|
|
v->x = -w/2; v->y = -h/2; v->z = -d/2; v++;
|
||
|
|
v->x = w/2; v->y = -h/2; v->z = -d/2; v++;
|
||
|
|
f = o->Faces;
|
||
|
|
for (x = 0; x < 12; x ++) {
|
||
|
|
f->Vertices[0] = o->Vertices + *vv++;
|
||
|
|
f->Vertices[1] = o->Vertices + *vv++;
|
||
|
|
f->Vertices[2] = o->Vertices + *vv++;
|
||
|
|
f->MappingU[0] = (pl_sInt32) ((double)*mm++ * 65535.0);
|
||
|
|
f->MappingV[0] = (pl_sInt32) ((double)*mm++ * 65535.0);
|
||
|
|
f->MappingU[1] = (pl_sInt32) ((double)*mm++ * 65535.0);
|
||
|
|
f->MappingV[1] = (pl_sInt32) ((double)*mm++ * 65535.0);
|
||
|
|
f->MappingU[2] = (pl_sInt32) ((double)*mm++ * 65535.0);
|
||
|
|
f->MappingV[2] = (pl_sInt32) ((double)*mm++ * 65535.0);
|
||
|
|
f->Material = m;
|
||
|
|
f++;
|
||
|
|
}
|
||
|
|
|
||
|
|
plObjCalcNormals(o);
|
||
|
|
return (o);
|
||
|
|
}
|
||
|
|
|
||
|
|
pl_Obj *plMakePlane(pl_Float w, pl_Float d, pl_uInt res, pl_Mat *m) {
|
||
|
|
pl_Obj *o;
|
||
|
|
pl_Vertex *v;
|
||
|
|
pl_Face *f;
|
||
|
|
pl_uInt x, y;
|
||
|
|
o = plObjCreate((res+1)*(res+1),res*res*2);
|
||
|
|
if (!o) return 0;
|
||
|
|
v = o->Vertices;
|
||
|
|
for (y = 0; y <= res; y ++) {
|
||
|
|
for (x = 0; x <= res; x ++) {
|
||
|
|
v->y = 0;
|
||
|
|
v->x = ((x*w)/res) - w/2;
|
||
|
|
v->z = ((y*d)/res) - d/2;
|
||
|
|
v++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
f = o->Faces;
|
||
|
|
for (y = 0; y < res; y ++) {
|
||
|
|
for (x = 0; x < res; x ++) {
|
||
|
|
f->Vertices[0] = o->Vertices + x+(y*(res+1));
|
||
|
|
f->MappingU[0] = (x<<16)/res;
|
||
|
|
f->MappingV[0] = (y<<16)/res;
|
||
|
|
f->Vertices[2] = o->Vertices + x+1+(y*(res+1));
|
||
|
|
f->MappingU[2] = ((x+1)<<16)/res;
|
||
|
|
f->MappingV[2] = (y<<16)/res;
|
||
|
|
f->Vertices[1] = o->Vertices + x+((y+1)*(res+1));
|
||
|
|
f->MappingU[1] = (x<<16)/res;
|
||
|
|
f->MappingV[1] = ((y+1)<<16)/res;
|
||
|
|
f->Material = m;
|
||
|
|
f++;
|
||
|
|
f->Vertices[0] = o->Vertices + x+((y+1)*(res+1));
|
||
|
|
f->MappingU[0] = (x<<16)/res;
|
||
|
|
f->MappingV[0] = ((y+1)<<16)/res;
|
||
|
|
f->Vertices[2] = o->Vertices + x+1+(y*(res+1));
|
||
|
|
f->MappingU[2] = ((x+1)<<16)/res;
|
||
|
|
f->MappingV[2] = (y<<16)/res;
|
||
|
|
f->Vertices[1] = o->Vertices + x+1+((y+1)*(res+1));
|
||
|
|
f->MappingU[1] = ((x+1)<<16)/res;
|
||
|
|
f->MappingV[1] = ((y+1)<<16)/res;
|
||
|
|
f->Material = m;
|
||
|
|
f++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
plObjCalcNormals(o);
|
||
|
|
return (o);
|
||
|
|
}
|