Renders scenes with a single hardcoded light and green objects

1 files changed, 50 insertions, 0 deletions

diff --git a/src/render.hpp b/src/render.hpp
new file mode 100644
index 0000000..3fd84b1
--- /dev/null
+++ b/src/render.hpp
@@ -0,0 +1,50 @@
+#ifndef RENDER_H
+#define RENDER_H
+
+#include "vector.hpp"
+#include "ray.hpp"
+#include "scene.hpp"
+
+class Color : public Vec3d {
+    public:
+        Color() {}
+        Color(const Vec3d &v) : Vec3d(v) {}
+        Color(double r, double g, double b) : Vec3d(r, g, b) {}
+
+        uint8_t r() { return m_x * 255; }
+        uint8_t g() { return m_y * 255; }
+        uint8_t b() { return m_z * 255; }
+
+        void clamp();
+
+};
+
+class Renderer {
+    public:
+    Renderer(const Scene &scn, Vec3d eye, Vec3d target, unsigned width, unsigned height);
+
+    Color render(unsigned x, unsigned y);
+
+    unsigned m_width, m_height;
+
+    private:
+    void recalculate();
+    Ray findray(double x, double y) const ;
+
+    Color pathtrace_sample(const Ray &r, unsigned hop);
+    // Will return first result less than chk_dist. 
+    // This is ignored if chk_dist is 0.
+    // If dist is non-null the resulting distance is written here.
+    const Shape* cast_ray(const Ray &r, double chk_dist, double *dist);
+
+    const Scene &m_scn;
+
+    // User options
+    Vec3d m_eye, m_target;
+
+    // Calculated values
+    Vec3d m_qx, m_qy, m_blc;
+
+};
+
+#endif