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Code Issues Releases Wiki Activity

more precise torus-rug rendering

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Zeno Rogue
2017-11-07 14:39:26 +01:00
parent b5382c5670
commit f5a8b2a0c2
5 changed files with 85 additions and 69 deletions
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28
rug.cpp
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@@ -34,6 +34,7 @@ GLAPI void APIENTRY glDeleteFramebuffers (GLsizei n, const GLuint *framebuffers)
namespace rug {
double rugzoom = .3;
int torus_precision = 2;
// hypersian rug datatypes and globals
//-------------------------------------
@@ -204,7 +205,7 @@ void buildTorusRug() {
transmatrix z2 = inverse(z1);
printf("h1 = %s\n", display(z2 * hyperpoint {22,1,0}));
auto addToruspoint = [&] (int x, int y) {
auto addToruspoint = [&] (ld x, ld y) {
auto r = addRugpoint(C0, 0);
hyperpoint onscreen;
applymodel(tC0(eumove(x, y)), onscreen);
@@ -226,15 +227,21 @@ void buildTorusRug() {
r->valid = true;
return r;
};
int rugmax = min(torus_precision, 16);
ld rmd = rugmax;
for(int i=0; i<qty; i++) {
int x = tps[i].x, y = tps[i].y;
auto r00 = addToruspoint(x, y);
auto r10 = addToruspoint(x+1, y);
auto r01 = addToruspoint(x, y+1);
auto rn1 = addToruspoint(x-1, y+1);
addTriangle(r00, r10, r01);
addTriangle(r00, r01, rn1);
rugpoint *rugarr[32][32];
for(int yy=0; yy<=rugmax; yy++)
for(int xx=0; xx<=rugmax; xx++)
rugarr[yy][xx] = addToruspoint(x+(xx-yy)/rmd, y+yy/rmd);
for(int yy=0; yy<rugmax; yy++)
for(int xx=0; xx<rugmax; xx++)
addTriangle(rugarr[yy][xx], rugarr[yy+1][xx], rugarr[yy+1][xx+1]),
addTriangle(rugarr[yy][xx], rugarr[yy][xx+1], rugarr[yy+1][xx+1]);
}
double maxz = 0;
@@ -824,6 +831,11 @@ void show() {
dialog::addBoolItem(XLAT("render the texture only once"), (renderonce), 'o');
dialog::addBoolItem(XLAT("render texture without OpenGL"), (rendernogl), 'g');
dialog::addSelItem(XLAT("texture size"), its(texturesize)+"x"+its(texturesize), 's');
if(torus) {
if(torus_precision < 1) torus_precision = 1;
if(torus_precision > 16) torus_precision = 16;
dialog::addSelItem(XLAT("precision"), its(torus_precision), 'p');
}
dialog::display();
keyhandler = [] (int sym, int uni) {
#if ISPANDORA
@@ -850,6 +862,8 @@ void show() {
}
else if(uni == 'o')
renderonce = !renderonce;
else if(uni == 'p' && torus_precision)
dialog::editNumber(torus_precision, 0, 16, 1, 2, "precision", "precision");
#if !ISPANDORA
else if(uni == 'g')
rendernogl = !rendernogl;