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TempleOSCD_150720.ISO

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Terry A. Davis authored and minexew committed 2018-09-08 21:46:22 +02:00
1 parent 401601816c
commit f8c05f98f4
554 files changed
+26046 -24853
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Demo/Graphics/Shading.CPP
+20 -20
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@@ -14,8 +14,8 @@ U0 Lighting(CDC *dc,CD3I32 *ls,CD3I32 *poly,I64 color)
v2.y=poly[2].y-poly[1].y;
v2.z=poly[2].z-poly[1].z;
//V1 and V2 are vects along two sides
//of the polygon joined at point[1].
//V1 and V2 are vects along two sides
//of the polygon joined at point[1].
vn_x=v1.y*v2.z-v1.z*v2.y;
vn_y=v1.z*v2.x-v1.x*v2.z;
@@ -27,19 +27,19 @@ U0 Lighting(CDC *dc,CD3I32 *ls,CD3I32 *poly,I64 color)
vn_y*=d;
vn_z*=d;
//Vn is the cross product of V1 and V3
//which means it is perpendicular. It
//is the normal vect to the surface.
//It has been scaled to length 65536.
GrRot(r,&vn_x,&vn_y,&vn_z);
//which means it is perpendicular. It
//is the normal vect to the surface.
//It has been scaled to length 65536.
Mat4x4MulXYZ(r,&vn_x,&vn_y,&vn_z);
i=(vn_x*ls->x+vn_y*ls->y+vn_z*ls->z)>>16;
//The dot product of the light source
//vect and the surface normal
//gives an illumination number.
//vect and the surface normal
//gives an illumination number.
//TempleOS will generate a random U16
//and compare to dither_probability_u16 and
//will pick from two colors.
//Probability dithering does not work with pen_width>1 at this time.
//TempleOS will generate a random U16
//and compare to dither_probability_u16 and
//will pick from two colors.
//Probability dithering does not work with pen_width>1 at this time.
if (i<0) {
dc->color=ROPF_PROBABILITY_DITHER+BLACK<<16+color;
dc->dither_probability_u16=-i;
@@ -58,19 +58,19 @@ U0 DrawIt(CTask *task,CDC *dc)
CCtrl *c=CtrlFindUnique(task,CTRLT_VIEWING_ANGLES);
CViewAngles *s=c->state;
F64 tt=0.5*(Sin(ã*2*(tS%10.0)/10.0)+2.0),
é,é2,è,è2,radius,d;
é,é2,è,è2,radius,d;
I64 i,j,cx=task->pix_width/2,cy=task->pix_height/2;
CD3I32 poly[3],ls;
dc->flags|=DCF_TRANSFORMATION;
DCAllocDepthBuf(dc);
DCDepthBufAlloc(dc);
GrIdentEqu(dc->r);
GrRotZEqu(dc->r,s->az);
GrRotYEqu(dc->r,s->ay);
GrRotXEqu(dc->r,s->ax+ã);
GrScaleEqu(dc->r,tt);
GrSetRotMat(dc,dc->r);
Mat4x4IdentEqu(dc->r);
Mat4x4RotZ(dc->r,s->az);
Mat4x4RotY(dc->r,s->ay);
Mat4x4RotX(dc->r,s->ax+ã);
Mat4x4Scale(dc->r,tt);
DCMat4x4Set(dc,dc->r);
ls.x=-(ip.pos.x-task->pix_left-task->scroll_x-cx);
ls.y=-(ip.pos.y-task->pix_top-task->scroll_y-cy);