fixed perspective calculations

1 files changed, 19 insertions, 0 deletions

diff --git a/src/o3d/deriv_vertex.h b/src/o3d/deriv_vertex.h
new file mode 100644
index 0000000..8945696
--- /dev/null
+++ b/src/o3d/deriv_vertex.h
@@ -0,0 +1,19 @@
+#ifndef O3D_DERIV_VERTEX_H
+#define O3D_DERIV_VERTEX_H
+
+#include "math/vector.h"
+
+namespace engine::o3d {
+
+class DerivedVertex4 {
+    public:
+        engine::math::Vector4 point;
+        float b0, b1;
+
+        DerivedVertex4(engine::math::Vector4 point, float b0, float b1);
+        DerivedVertex4 div_by_w() const;
+};
+
+}
+
+#endif // O3D_DERIV_VERTEX_H