zeefaad/Interferometre-de-Michelson
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interferences réalistes

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zeefaad
2025-12-29 16:40:55 +01:00
parent e78af26734
commit ebd2ba2e51
3 changed files with 14 additions and 14 deletions
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12
glsl/michelson.frag
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@ -47,27 +47,23 @@ void main() {
float relX = (pixelX - center.x) * zoom; float relX = (pixelX - center.x) * zoom;
float relY = (pixelY - center.y) * zoom; float relY = (pixelY - center.y) * zoom;
// r^2 // r^2
float radiusSq = relX * relX + relY * relY; float radiusSq = relX * relX + relY * relY;
// Diff de marche lamme d'air 2 * e cos(i) mais petits angles => cos(i) ~ 1 - i^2/2 mais i ~ r/f et r^2 = x^2 + y^2
float ringFactorBase = radiusSq * 0.065;
// Diff de marche du au coin d'air // Diff de marche du au coin d'air
float wDelta = (relX * angleM1 + relY * angleM1_Y) * 200.0; float wDelta = (relX * angleM1 + relY * angleM1_Y) * 200.0;
float currDeltaBase = deltaLnm + wDelta; float cosFactor = 1.0 - (radiusSq * 0.000004);
float currDelta = deltaLnm - ringFactorBase + wDelta; float currDelta = (deltaLnm * cosFactor) + wDelta;
vec3 accumColor = vec3(0.0); vec3 accumColor = vec3(0.0);
for(int i = 0; i < 10; i++) { for(int i = 0; i < 10; i++) {
if (i >= lambdasCount) break; if (i >= lambdasCount) break;
float l = lambdas[i]; float l = lambdas[i];
if (l < 1.0) l = 550.0;
vec3 baseColorVec = WavelengthToRGB(l); vec3 baseColorVec = WavelengthToRGB(l);
float currDelta = currDeltaBase - ringFactorBase;
float K = PI / l; float K = PI / l;
float phase = currDelta * K; float phase = currDelta * K;
float intensity = cos(phase); float intensity = cos(phase);

12
glsl/michelson_web.frag
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@ -45,9 +45,12 @@ void main() {
float relY = (pixelY - center.y) * zoom; float relY = (pixelY - center.y) * zoom;
float radiusSq = relX * relX + relY * relY; float radiusSq = relX * relX + relY * relY;
float ringFactorBase = radiusSq * 0.065;
float wDelta = (relX * angleM1 + relY * angleM1_Y) * 200.0; float wDelta = (relX * angleM1 + relY * angleM1_Y) * 200.0;
float currDeltaBase = deltaLnm + wDelta;
float cosFactor = 1.0 - (radiusSq * 0.000004);
float currDelta = (deltaLnm * cosFactor) + wDelta;
vec3 accumColor = vec3(0.0); vec3 accumColor = vec3(0.0);
@ -55,15 +58,16 @@ void main() {
if (i >= lambdasCount) break; if (i >= lambdasCount) break;
float l = lambdas[i]; float l = lambdas[i];
if (l < 1.0) l = 550.0; if (l < 1.0) l = 550.0;
vec3 baseColorVec = WavelengthToRGB(l); vec3 baseColorVec = WavelengthToRGB(l);
float currDelta = currDeltaBase - ringFactorBase;
float K = PI / l; float K = PI / l;
float phase = currDelta * K; float phase = currDelta * K;
float intensity = cos(phase); float intensity = cos(phase);
intensity = intensity * intensity; intensity = intensity * intensity;
accumColor += baseColorVec * intensity; accumColor += baseColorVec * intensity;
} }

2
main.c
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@ -571,7 +571,7 @@ int main () {
#endif #endif
mic.center = (Vector2){ UI_WIDTH + (1920 - UI_WIDTH) / 2.0f - 100, 1080 / 2.0f }; mic.center = (Vector2){ UI_WIDTH + (1920 - UI_WIDTH) / 2.0f - 100, 1080 / 2.0f };
mic.d1 = 250.0f; mic.d1 = 300.0f;
mic.d2 = 250.0f; mic.d2 = 250.0f;
mic.lambdas[0] = 550.0f; mic.lambdas[0] = 550.0f;
mic.lambdasCount = 1; mic.lambdasCount = 1;