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versuch reflexionen einzubauen. man sieht sie zwar, aber der rest ist auch noch beleuchtet

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any
2026-07-26 20:49:08 +02:00
parent 76f02ac5c5
commit 1c4dce53c1
3 changed files with 31 additions and 15 deletions
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raytrace.c
+29 -13
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@@ -8,28 +8,44 @@ RGBA raytraceSphere(sphere **objectList, ray *lightray) {
RGBA pixel = (RGBA){0,0,0,1};
const int lightBounces = 1;
sphere **spheresHitList = (sphere **)calloc( (lightBounces + 1),sizeof(sphere*) );
int hitLightIndex = -1;
vec3 sphereNormal;
sphere *nearestSphere = nullptr;
vec3 nearestCollisionPoint = {10000,10000,10000};
for (int i = 0; i < 100 && objectList[i] != nullptr; i++) {
vec3 collisionPoint = collisionPointSphere(lightray, objectList[i]);
if (collisionPoint.x == -10000000) {
for (int j = 0; j <= lightBounces; j++) {
nearestSphere = nullptr;
nearestCollisionPoint = (vec3){10000,10000,10000};
for (int i = 0; i < 100 && objectList[i] != nullptr; i++) {
vec3 collisionPoint = collisionPointSphere(lightray, objectList[i]);
if (collisionPoint.x == -10000000) {
}
else{
if (vec3Length(collisionPoint)< vec3Length(nearestCollisionPoint)) {
nearestCollisionPoint = collisionPoint;
nearestSphere = objectList[i];
}
else{
if (vec3Length(collisionPoint)< vec3Length(nearestCollisionPoint)) {
nearestCollisionPoint = collisionPoint;
nearestSphere = objectList[i];
}
}
}
if (nearestSphere != nullptr) {
sphereNormal = vec3Normalize(vec3Subtract(nearestCollisionPoint, nearestSphere->origin));////////////////////////////// optimize divide by sphere radius instead
lightray->direction = vec3Add(lightray->direction, vec3Scale(sphereNormal, 2));
lightray->origin = nearestCollisionPoint;
}
else {
sphereNormal = (vec3){0,0,0};
}
}
if (nearestSphere != nullptr) {
vec3 sphereNormal = vec3Normalize(vec3Subtract(nearestCollisionPoint, nearestSphere->origin));
pixel.r = -vec3Product(sphereNormal, lightray->direction);
if (nearestSphere != nullptr)
{
//pixel.r = -vec3Product(sphereNormal, lightray->direction);
pixel = (RGBA){1 - 0.5 *( sphereNormal.x + 1), 1 - 0.5 * (sphereNormal.y +1), 1 -0.5* (sphereNormal.z + 1),1};
}
free(spheresHitList);
return pixel;