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ray::vr:: equidistant pseudo-ray in product

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This commit is contained in:
Zeno Rogue 2021-02-01 21:26:25 +01:00
parent 115f326d5c
commit cb4c18ee94
1 changed files with 55 additions and 22 deletions
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77
raycaster.cpp
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@ -80,8 +80,7 @@ EX bool available() {
/* would need a completely different implementation */
if(vrhr::active() && vrhr::eyes == vrhr::eEyes::equidistant) {
if(reflect_val) return false;
if(nonisotropic) return false;
if(prod) return false;
if(sol || stretch::in()) return false;
}
#endif
if(noGUI) return false;
@ -442,7 +441,9 @@ void enable_raycaster() {
" mediump float zpos = log(position.z);\n";
else fmain +=
" mediump float zpos = log(position.z*position.z"+sgn+"position.x*position.x"+sgn+"position.y*position.y)/2.;\n";
fmain +=
if(eyes) fmain +=
" vw *= exp(-zpos);\n";
else fmain +=
" position *= exp(-zpos);\n"
" mediump float zspeed = at1.z;\n"
" mediump float xspeed = length(at1.xy);\n"
@ -621,19 +622,19 @@ void enable_raycaster() {
if(use_reflect) fmain +=
"bool reflect = false;\n";
if(in_h2xe()) fmain +=
if(in_h2xe() && !stepbased) fmain +=
" mediump float ch = cosh(dist*xspeed); mediump float sh = sinh(dist*xspeed);\n"
" mediump vec4 v = position * ch + tangent * sh;\n"
" tangent = tangent * ch + position * sh;\n"
" position = v;\n"
" zpos += dist * zspeed;\n";
else if(in_s2xe()) fmain +=
else if(in_s2xe() && !stepbased) fmain +=
" mediump float ch = cos(dist*xspeed); mediump float sh = sin(dist*xspeed);\n"
" mediump vec4 v = position * ch + tangent * sh;\n"
" tangent = tangent * ch - position * sh;\n"
" position = v;\n"
" zpos += dist * zspeed;\n";
else if(in_e2xe()) fmain +=
else if(in_e2xe() && !stepbased) fmain +=
" position = position + tangent * dist * xspeed;\n"
" zpos += dist * zspeed;\n";
else if(hyperbolic && !stepbased) fmain +=
@ -889,21 +890,47 @@ void enable_raycaster() {
if(eyes) {
fmain +=
" mediump float t = go + dist;\n"
" mediump vec4 v = at0 * t;\n"
" v[3] = 1.;\n"
" mediump vec4 azeq = uEyeShift * v;\n"
" mediump float alen = length(azeq.xyz);\n";
if(hyperbolic) fmain +=
" azeq *= sinh(alen) / alen;\n"
" azeq[3] = cosh(alen);\n";
else if(sphere) fmain +=
" azeq *= sin(alen) / alen;\n"
" azeq[3] = cos(alen);\n";
else /* euclid */ fmain +=
" azeq[3] = 1;\n";
" mediump float t = go + dist;\n";
fmain += prod ?
" mediump vec4 v = at1 * t;\n" :
" mediump vec4 v = at0 * t;\n";
fmain +=
" v[3] = 1.;\n"
" mediump vec4 azeq = uEyeShift * v;\n";
if(prod) {
fmain +=
" mediump float alen_xy = length(azeq.xy);\n";
fmain += " mediump float nzpos = zpos + azeq.z;\n";
if(in_h2xe()) {
fmain += " azeq.xy *= sinh(alen_xy) / alen_xy;\n";
fmain += " azeq.z = cosh(alen_xy);\n";
}
else if(in_s2xe()) {
fmain += " azeq.xy *= sin (alen_xy) / alen_xy;\n";
fmain += " azeq.z = cos(alen_xy);\n";
}
else {
/* euclid */
fmain += " azeq.z = 1.;\n";
}
fmain += "azeq.w = 0.;\n";
fmain +=
" mediump vec4 nposition = vw * azeq;\n";
}
else {
fmain +=
" mediump float alen = length(azeq.xyz);\n";
if(hyperbolic) fmain +=
" azeq *= sinh(alen) / alen;\n"
" azeq[3] = cosh(alen);\n";
else if(sphere) fmain +=
" azeq *= sin(alen) / alen;\n"
" azeq[3] = cos(alen);\n";
else /* euclid */ fmain +=
" azeq[3] = 1;\n";
fmain +=
" mediump vec4 nposition = vw * azeq;\n";
}
}
else if(hyperbolic) {
@ -922,11 +949,11 @@ void enable_raycaster() {
" mediump vec4 nposition = v;\n";
}
bool reg = hyperbolic || sphere || euclid || sl2;
bool reg = hyperbolic || sphere || euclid || sl2 || prod;
if(reg) {
fsh += "mediump float len_h(vec4 h) { return 1. - h[3]; }\n";
string s = rotspace ? "-2" : "";
string s = (rotspace || prod) ? "-2" : "";
fmain +=
" mediump float best = len(nposition);\n"
" for(int i=0; i<sides"+s+"; i++) {\n"
@ -941,6 +968,11 @@ void enable_raycaster() {
" mediump float cand2 = len_h(uM[walloffset+sides-1]*nposition);\n"
" if(cand2 < best) { best = cand2; which = sides-1; }\n"
" }\n";
if(prod) {
fmain +=
"if(nzpos > uPLevel) which = sides-1;\n"
"if(nzpos <-uPLevel) which = sides-2;\n";
}
}
fmain +=
@ -1091,7 +1123,8 @@ void enable_raycaster() {
fmain += "if(which == -1) continue;\n";
if(prod) fmain += "position.w = -zpos;\n";
if(prod && eyes) fmain += "position.w = -nzpos;\n";
else if(prod) fmain += "position.w = -zpos;\n";
if(reg3::ultra_mirror_in()) fmain +=
"if(which >= " + its(S7) + ") {"