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ray:: e2xe

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This commit is contained in:
Zeno Rogue 2019-11-29 00:50:47 +01:00
parent d7eed402a7
commit 8489b03814
1 changed files with 19 additions and 2 deletions
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21
raycaster.cpp
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@ -270,8 +270,12 @@ void enable_raycaster() {
string sgn=in_h2xe() ? "-" : "+";
fmain +=
" vec4 position = vw * vec4(0., 0., 1., 0.);\n"
" vec4 at1 = uLP * at0;\n"
" float zpos = log(position.z*position.z"+sgn+"position.x*position.x"+sgn+"position.y*position.y)/2.;\n"
" vec4 at1 = uLP * at0;\n";
if(in_e2xe()) fmain +=
" float zpos = log(position.z);\n";
else fmain +=
" float zpos = log(position.z*position.z"+sgn+"position.x*position.x"+sgn+"position.y*position.y)/2.;\n";
fmain +=
" position *= exp(-zpos);\n"
" float zspeed = at1.z;\n"
" float xspeed = length(at1.xy);\n"
@ -291,6 +295,8 @@ void enable_raycaster() {
fmain +=
" int which = -1;\n";
if(in_e2xe()) fmain += "tangent.w = position.w = 0.;\n";
if(IN_ODS) fmain +=
" if(go == 0.) {\n"
@ -321,6 +327,14 @@ void enable_raycaster() {
" vec4 next_tangent = tangent * cos(d) - position * sin(d);\n"
" if(next_tangent[2] > (uM[i] * next_tangent)[2]) continue;\n"
" d /= xspeed;\n";
else if(in_e2xe()) fmain +=
" float deno = dot(position, tangent) - dot(uM[i]*position, uM[i]*tangent);\n"
" if(deno < 1e-6 && deno > -1e-6) continue;\n"
" float d = (dot(uM[i]*position, uM[i]*position) - dot(position, position)) / 2. / deno;\n"
" if(d < 0.) continue;\n"
" vec4 next_position = position + d * tangent;\n"
" if(dot(next_position, tangent) < dot(uM[i]*next_position, uM[i]*tangent)) continue;\n"
" d /= xspeed;\n";
else if(hyperbolic) fmain +=
" float v = ((position - uM[i] * position)[3] / (uM[i] * tangent - tangent)[3]);\n"
" if(v > 1. || v < -1.) continue;\n"
@ -393,6 +407,9 @@ void enable_raycaster() {
" tangent = tangent * ch - position * sh;\n"
" position = v;\n"
" zpos += dist * zspeed;\n";
else if(in_e2xe()) fmain +=
" position = position + tangent * dist * xspeed;\n"
" zpos += dist * zspeed;\n";
else if(hyperbolic) fmain +=
" float ch = cosh(dist); float sh = sinh(dist);\n"
" vec4 v = position * ch + tangent * sh;\n"