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update camera namespace

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This commit is contained in:
Shuo Feng 2024-03-19 21:01:25 -04:00
parent 29b87c041e
commit 179227420d
Signed by: sfeng
GPG key ID: 1E83AE6CD1C037B1
1 changed files with 18 additions and 18 deletions
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36
src/RayTracer.cc
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@ -25,6 +25,7 @@ Vector3f trace();
namespace camera { namespace camera {
int width, height; int width, height;
Vector3f position, u, v, du, dv, vpUpperLeft, pxUpperLeft;
void init(); void init();
} // namespace camera } // namespace camera
@ -52,18 +53,6 @@ void RayTracer::parse() {
void RayTracer::render() { void RayTracer::render() {
camera::init(); camera::init();
Vector3f cameraPos = Scene::current->center();
Vector3f lookAt = Scene::current->lookAt();
float vpHeight =
2 * tan(Scene::current->fov() / 180 * M_PI / 2) * lookAt.norm();
float vpWidth = vpHeight * camera::width / camera::height;
Vector3f u = Vector3f(vpWidth, 0, 0);
Vector3f v = Vector3f(0, -vpHeight, 0);
Vector3f du = u / camera::width;
Vector3f dv = v / camera::height;
Vector3f vpUpperLeft = cameraPos + lookAt - u / 2.0 - v / 2.0;
Vector3f pxUpperLeft = vpUpperLeft + (du + dv) / 2.0;
Output::current = Output::current =
new Output(Scene::current->name(), camera::width, camera::height); new Output(Scene::current->name(), camera::width, camera::height);
@ -76,8 +65,8 @@ void RayTracer::render() {
Vector3f gdu = Vector3f::Zero(); Vector3f gdu = Vector3f::Zero();
Vector3f gdv = Vector3f::Zero(); Vector3f gdv = Vector3f::Zero();
if (gridWidth > 1 || gridHeight > 1) { if (gridWidth > 1 || gridHeight > 1) {
gdu = du / gridWidth; gdu = camera::du / gridWidth;
gdv = dv / gridHeight; gdv = camera::dv / gridHeight;
} }
for (int y = 0; y < camera::height; ++y) { for (int y = 0; y < camera::height; ++y) {
@ -90,11 +79,12 @@ void RayTracer::render() {
if (Scene::current->globalIllum()) { if (Scene::current->globalIllum()) {
for (int j = 0; j < gridHeight; ++j) for (int j = 0; j < gridHeight; ++j)
for (int i = 0; i < gridWidth; ++i) { for (int i = 0; i < gridWidth; ++i) {
Ray ray = getRay(x, y, i, j, vpUpperLeft, du, gdu, dv, gdv); Ray ray = getRay(x, y, i, j, camera::vpUpperLeft, camera::du, gdu,
camera::dv, gdv);
color = trace(); color = trace();
} }
} else { } else {
Ray ray = getRay(x, y, pxUpperLeft, du, dv); Ray ray = getRay(x, y, camera::pxUpperLeft, camera::du, camera::dv);
priority_queue<HitRecord> records; priority_queue<HitRecord> records;
for (auto g : geometries) { for (auto g : geometries) {
Optional<float> t = g->intersect(ray); Optional<float> t = g->intersect(ray);
@ -138,8 +128,7 @@ int getRayNumber(VectorXi data) {
Ray getRay(int x, int y, const Vector3f &upperLeft, const Vector3f &du, Ray getRay(int x, int y, const Vector3f &upperLeft, const Vector3f &du,
const Vector3f &dv) { const Vector3f &dv) {
Vector3f camPos = Scene::current->center(); return Ray(camera::position, upperLeft + x * du + y * dv - camera::position);
return Ray(camPos, upperLeft + x * du + y * dv - camPos);
} }
Ray getRay(int x, int y, int i, int j, const Vector3f &upperLeft, Ray getRay(int x, int y, int i, int j, const Vector3f &upperLeft,
@ -161,5 +150,16 @@ namespace camera {
void init() { void init() {
width = Scene::current->width(); width = Scene::current->width();
height = Scene::current->height(); height = Scene::current->height();
position = Scene::current->center();
Vector3f lookAt = Scene::current->lookAt();
float vpHeight =
2 * tan(Scene::current->fov() / 180 * M_PI / 2) * lookAt.norm();
float vpWidth = vpHeight * camera::width / camera::height;
u = Vector3f(vpWidth, 0, 0);
v = Vector3f(0, -vpHeight, 0);
du = u / camera::width;
dv = v / camera::height;
vpUpperLeft = camera::position + lookAt - u / 2.0 - v / 2.0;
pxUpperLeft = vpUpperLeft + (du + dv) / 2.0;
} }
} // namespace camera } // namespace camera