/** Draw an axis-aligned cube, defined by the the minimum and maximum
* coordinates of the corners.
*/
void drawCube(Vec3 min, Vec3 max)
{
RtInt nverts[] = {4, 4, 4, 4, 4, 4};
RtInt verts[] = {
0, 1, 2, 3,
4, 7, 6, 5,
0, 4, 5, 1,
3, 2, 6, 7,
1, 5, 6, 2,
0, 3, 7, 4
};
RtFloat P[] = {
min.x, min.y, min.z,
max.x, min.y, min.z,
max.x, min.y, max.z,
min.x, min.y, max.z,
min.x, max.y, min.z,
max.x, max.y, min.z,
max.x, max.y, max.z,
min.x, max.y, max.z
};
RiPointsPolygons(6, nverts, verts, "P", P, RI_NULL);
}
void show_object(wave_object_t *obj) {
RtPoint *verts = malloc(sizeof(RtPoint)*(obj->largest_face));
RtInt *nverts = malloc(sizeof(RtInt)*(obj->num_faces));
int hasNorms = 1;
size_t vn;
size_t nn;
size_t total_pts = 0;
size_t i,j;
face_t f;
RtInt *polys;
size_t cur_off;
for (i = 0; i< obj->num_faces; ++i) {
f = obj->faces[i];
nverts[i] = f.size;
total_pts += f.size;
}
polys = malloc(sizeof(RtInt)*total_pts);
cur_off = 0;
for (i = 0; i< obj->num_faces; ++i) {
f = obj->faces[i];
for (j = 0; j< f.size; ++j) {
polys[cur_off++] = f.verts[j];
}
}
printf("cur_off = %zu, obj->num_faces = %zu, total_pts = %zu\n", cur_off, obj->num_faces, total_pts);
RiPointsPolygons(obj->num_faces,
nverts,
polys,
"P", obj->verts, RI_NULL);
free(polys);
free(nverts);
free(verts);
}
void doFrame(int fNum, scene_info_t *scene) {
RiFrameBegin(fNum);
char buffer[256];
sprintf(buffer, "images/%s%05d.tif", scene->fprefix, fNum);
RiDisplay(buffer,(char*)"file",(char*)"rgba",RI_NULL);
RiFormat(800, 600, 1.25);
RiLightSource((char*)"distantlight",RI_NULL);
RiProjection((char*)"perspective",RI_NULL);
/* RiTranslate(scene->x_trans, scene->y_trans, scene->z_trans); */
/* RiRotate( scene->x_rotation, 1.0, 0.0, 0.0); */
/* RiRotate( scene->y_rotation, 0.0, 1.0, 0.0); */
/* RiRotate( scene->z_rotation, 0.0, 0.0, 1.0); */
PlaceCamera(&scene->cam);
RiWorldBegin();
RiSurface((char*)"matte", RI_NULL);
const size_t NUM_I = 256;
const size_t NUM_J = 256;
RtPoint *pts = malloc(sizeof(RtPoint)*NUM_I*NUM_J);
RtColor *colors = malloc(sizeof(RtPoint)*NUM_I*NUM_J);
double umin = -4*PI;
double umax = 4*PI;
double vmin = -4*PI;
double vmax = 4*PI;
double du = (umax - umin)/(NUM_J-1);
double dv = (vmax - vmin)/(NUM_I-1);
double u = umin;
for (size_t i=0; i< NUM_I; ++i) {
double v = vmin;
for (size_t j=0; j < NUM_J; ++j) {
pts[i*NUM_J + j][0] = x(u,v);
pts[i*NUM_J + j][1] = z(u,v);
pts[i*NUM_J + j][2] = y(u,v);
colors[i*NUM_J + j][0] = r(u,v);
colors[i*NUM_J + j][1] = g(u,v);
colors[i*NUM_J + j][2] = b(u,v);
/* RiTransformBegin(); */
/* RiTranslate(x(u,v), y(u,v), z(u,v)); */
/* RiSphere(du, -du, du, 360.0, RI_NULL); */
/* RiTransformEnd(); */
v += dv;
}
u += du;
}
RtInt npolys = 2*(NUM_J+1)*(NUM_I+1);
RtInt *nvertices = malloc(sizeof(RtInt) * npolys);
for (size_t i=0; i<npolys; ++i) {
nvertices[i] = 3;
}
RtInt *vertices = malloc(sizeof(RtInt)*3*npolys);
size_t curIdx = 0;
for (size_t i = 0; i<(NUM_I-1); ++i) {
for (size_t j=0; j<(NUM_J-1); ++j) {
vertices[curIdx] = j*NUM_I + i;
vertices[curIdx+1] = (j+1)*NUM_I + i;
vertices[curIdx+2] = j*NUM_I + i+1;
vertices[curIdx+3] = (j+1)*NUM_I + i;
vertices[curIdx+4] = (j+1)*NUM_I + (i+1);
vertices[curIdx+5] = j*NUM_I + (i+1);
curIdx += 6;
}
}
RiPointsPolygons(curIdx/3, nvertices, vertices, "P", pts, "Cs", colors, RI_NULL);
/* RiSphere(10.0, -10.0, 10.0, 360.0); */
free(vertices);
free(nvertices);
free(colors);
free(pts);
RiWorldEnd();
RiFrameEnd();
}
/**
* Various polygon geometry interface calls
*/
void testPoly10()
{
RtFloat p[] = {
// outer
-.5, -.5, 1, // 1
-.5, .5, 1, // 2
.5, .5, 1, // 3
.5, -.5, 1, // 4
0
};
RtInt nloops[] = {
1
};
RtInt nverts[] = {
4
};
RtInt verts[] = {
0, 1, 2, 3
};
// Disable warnings (variable not used)
opacity_25[0] = opacity_25[0]+0;
opacity_50[0] = opacity_50[0]+0;
opacity_75[0] = opacity_75[0]+0;
RiAttributeBegin(); {
RiTranslate(0, 0, 1.5);
RiAttributeBegin(); {
RiRotate(15.0, 0, 0, 1);
RiOpacity(opacity_50);
RiColor(greenish);
// RiGeneralPolygon(nloops[0], nverts, RI_P, &p, RI_NULL);
RiPolygon(4, RI_P, &p, RI_NULL);
// RiPointsPolygons(1, nverts, verts, RI_P, &p, RI_NULL);
// RiPointsGeneralPolygons(1, nloops, nverts, verts, RI_P, &p, RI_NULL);
# if defined ( _TRACE )
{
RtInt i;
RiTransformPoints(RI_CURRENT, RI_RASTER, sizeof(p)/sizeof(RtPoint), (RtPoint *)p);
for ( i = 0; i < 4; ++i ) {
printf("x %f, y %f, z %f\n", p[i*3+0], p[i*3+1], p[i*3+2]);
}
printf("Inverse\n");
RiTransformPoints(RI_RASTER, RI_CURRENT, sizeof(p)/sizeof(RtPoint), (RtPoint *)p);
for ( i = 0; i < 4; ++i ) {
printf("x %f, y %f, z %f\n", p[i*3+0], p[i*3+1], p[i*3+2]);
}
}
# endif
} RiAttributeEnd();
RiAttributeBegin(); {
RiTranslate(0, 0, 0.2F);
// RiOpacity(opacity_50);
RiColor(redish);
// RiGeneralPolygon(nloops[0], nverts, RI_P, &p, RI_NULL);
// RiPolygon(4, RI_P, &p, RI_NULL);
RiPointsPolygons(1, nverts, verts, RI_P, &p, RI_NULL);
// RiPointsGeneralPolygons(1, nloops, nverts, verts, RI_P, &p, RI_NULL);
} RiAttributeEnd();
RiAttributeBegin(); {
RiRotate(-15.0F, 0, 0, 1);
RiTranslate(0, 0, 0.3F);
RiOpacity(opacity_75);
RiColor(blueish);
// RiGeneralPolygon(nloops[0], nverts, RI_P, &p, RI_NULL);
// RiPolygon(4, RI_P, &p, RI_NULL);
// RiPointsPolygons(1, nverts, verts, RI_P, &p, RI_NULL);
RiPointsGeneralPolygons(1, nloops, nverts, verts, RI_P, &p, RI_NULL);
} RiAttributeEnd();
} RiAttributeEnd();
}