ilusha/Modules
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Adding normals

Browse source
This commit is contained in:
IlyaShurupov 2023-10-17 20:51:25 +03:00 • committed by Ilya Shurupov
parent a84cfabd60
commit 368ae81251
6 changed files with 882 additions and 878 deletions
Download patch file Download diff file Expand all files Collapse all files

41
RayTracer/private/RayTracer.cpp
View file

@ -22,7 +22,7 @@ void RayTracer::castRay(const Ray& ray, RayCastData& out, alnf far) {
far *= far;
for (auto obj : mScene->mObjects) {
for (auto trig : obj->getTrigs()) {
for (auto trig : obj->mCache.TrigCaches) {
if (trig->castRay(ray)) {
// printf("Hit\n");
@ -77,15 +77,46 @@ void RayTracer::render(const Scene& scene, RayTracer::RenderBuffer& buff) {
castRay(ray, castData, mScene->mCamera.getFar());
if (castData.hit) {
auto normal = castData.trig->getNormal();
Vec3F normal = castData.trig->getNormal();
if (1) {
const auto& points = castData.obj->mCache.TransformedPoints;
const auto& normals = castData.obj->mCache.TransformedNormals;
const auto trig = castData.trig;
const auto& n1 = normals[trig->mP1];
const auto& n2 = normals[trig->mP2];
const auto& n3 = normals[trig->mP3];
auto v0 = points[trig->mP1];
auto v1 = points[trig->mP2];
auto v2 = points[trig->mP3];
// Calculate barycentric coordinates
Vec3F barycentric;
// Calculate the area of the triangle
auto areaABC = (halnf) (v1 - v0).cross(v2 - v0).length();
auto areaPBC = (halnf) (v1 - castData.hitPos).cross(v2 - castData.hitPos).length();
auto areaPCA = (halnf) (v2 - castData.hitPos).cross(v0 - castData.hitPos).length();
// Calculate the barycentric coordinates
barycentric.x = areaPBC / areaABC;
barycentric.y = areaPCA / areaABC;
barycentric.z = 1.0f - barycentric.x - barycentric.y;
// Interpolate the normal using barycentric coordinates
normal = n1 * barycentric.x + n2 * barycentric.y + n3 * barycentric.z;
}
normal.normalize();
RGBA col = {normal.x * 0.5f + 0.5f, normal.y * 0.5f + 0.5f, normal.z * 0.5f + 0.5f, 1.f};
auto depth = 1 - clamp((halnf) (castData.hitPos - ray.pos).length(), 0.f, mScene->mCamera.getFar()) / mScene->mCamera.getFar();
// buff.set({i, j}, {depth, depth, depth, 1.f});
buff.set({i, j}, col);
// auto depth = 1 - clamp((halnf) (castData.hitPos - ray.pos).length(), 0.f, mScene->mCamera.getFar()) / mScene->mCamera.getFar();
// buff.set({i, j}, {depth, depth, depth, 1.f});
} else {
buff.set({i, j}, RGBA(0.f, 0.f, 0.f, 0.f));
}