near plane clipping partial

include/globals.hpp

@@ -1,8 +1,8 @@
 #ifndef DELTA_GLOBALS
 #define DELTA_GLOBALS
 
-const int SIMULATED_WIDTH = 1920;
-const int SIMULATED_HEIGHT = 1080;
+const int SIMULATED_WIDTH = 800;
+const int SIMULATED_HEIGHT = 600;
 const int FOCAL = 300;
 
 #endif

include/math.hpp

@@ -36,11 +36,25 @@ class DeltaVector3 {
 };
 
 float getDeterminant(const DeltaVector2 &pointA, const DeltaVector2 &pointB, const DeltaVector2 &candidate);
+DeltaVector2 barycentricToScreen(const DeltaVector3 &baryPoint, const DeltaVector2 &a, const DeltaVector2 &b, const DeltaVector2 &c);
+DeltaVector3 intersect(DeltaVector3 a, DeltaVector3 b, float nearZ);
 
 struct DeltaTriangle {
     DeltaVector3 a, b, c;  
 };
 
+struct DeltaTriangle2D {
+    DeltaVector2 a, b, c;  
+};
+
+
+struct DeltaRenderTriangle {
+    DeltaVector3 a, b, c;
+    DeltaVector2 uva, uvb, uvc;
+};
+
+int clipTriangleAgainstNearPlane(float nearY, const DeltaRenderTriangle &in, DeltaRenderTriangle &out1, DeltaRenderTriangle &out2);
+
 uint32_t SDLColorToUint32(SDL_Color color);
 
 #endif

include/renderer/calls.hpp

@@ -7,6 +7,6 @@
 
 void rasterizeTriangle(SDL_Renderer *renderer, const DeltaVector2 &a, const DeltaVector2 &b, const DeltaVector2 &c);
 void rasterizeTriangleFast(SDL_Surface* surface, const DeltaVector2& v0, const DeltaVector2& v1, const DeltaVector2& v2, uint32_t color);
-void rasterizeTriangleSurface(SDL_Surface* surface, const DeltaVector2& a, const DeltaVector2& b, const DeltaVector2& c, uint32_t color);
+void rasterizeTriangleSurface(SDL_Surface* surface, const DeltaVector2& v0, const DeltaVector2& v1, const DeltaVector2& v2, uint32_t color, float u0, float v0_uv, float u1, float v1_uv, float u2, float v2_uv);
 void setPixel(SDL_Surface* surface, int x, int y, uint32_t color);
 #endif

include/renderer/camera.hpp

@@ -10,7 +10,9 @@ class DeltaCamera {
 
         DeltaCamera() {pos = DeltaVector3(); angle = DeltaVector2();};
         DeltaCamera(float x, float y, float z);
+        DeltaVector3 translatePoint(const DeltaVector3 &worldPos);
         DeltaVector2 projectPointVec(const DeltaVector3 &worldPos);
+        int projectTriangle(const DeltaTriangle &in, DeltaTriangle2D &out1, DeltaTriangle2D &out2);
         DeltaVector2 projectPoint(float worldX, float worldY, float worldZ);
 };