1 files changed, 24 insertions, 0 deletions
diff --git a/src/o3d/tri_deriv.h b/src/o3d/tri_deriv.h
new file mode 100644
index 0000000..41ed4dc
--- /dev/null
+++ b/src/o3d/tri_deriv.h
@@ -0,0 +1,24 @@
+#ifndef O3D_TRI_DERIV_VERTEX_H
+#define O3D_TRI_DERIV_VERTEX_H
+
+#include <vector>
+#include "o3d/vertex.h"
+#include "o3d/deriv_vertex.h"
+
+namespace engine::o3d {
+
+class TriangleDerivedVertex4 {
+    public:
+        DerivedVertex4 derived_vertex1;
+        DerivedVertex4 derived_vertex2;
+        DerivedVertex4 derived_vertex3;
+
+        TriangleDerivedVertex4(DerivedVertex4 derived_vertex1, DerivedVertex4 derived_vertex2, DerivedVertex4 derived_vertex3);
+        std::vector<TriangleDerivedVertex4> perspective_crop_xy_out(float x1, float x2, float y1, float y2) const;
+        std::vector<TriangleDerivedVertex4> crop_z_out(float z1, float z2) const;
+        TriangleDerivedVertex4 div_by_w() const;
+};
+
+}
+
+#endif // O3D_TRI_DERIV_VERTEX_H