near plane clipping partial

2026-02-21 16:28:09 +01:00
parent 7c03b1b81d
commit 7ca48a5080
9 changed files with 271 additions and 37 deletions
@@ -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