wip splines

BBGE/SplineGrid.h

@@ -0,0 +1,52 @@
+#ifndef BBGE_SPLINEGRID_H
+#define BBGE_SPLINEGRID_H
+
+#include <vector>
+#include "Vector.h"
+#include "glm/glm.hpp"
+#include "Quad.h"
+
+class SplineGridCtrlPoint : public Quad
+{
+public:
+	SplineGridCtrlPoint();
+	virtual void onUpdate(float dt) OVERRIDE;
+	Vector getSplinePosition() const;
+
+	static SplineGridCtrlPoint *movingPoint;
+};
+
+class SplineGrid : public Quad
+{
+public:
+	typedef Vector value_type;
+
+	SplineGrid();
+	~SplineGrid();
+
+	// # of control points on each axis
+	void resize(size_t w, size_t h, size_t xres, size_t yres);
+	void recalc();
+	void resetControlPoints();
+
+	virtual void onRender(const RenderState& rs) const OVERRIDE;
+	virtual void onUpdate(float dt) OVERRIDE;
+
+private:
+
+	SplineGridCtrlPoint *createControlPoint(size_t x, size_t y);
+
+	unsigned degreeX, degreeY;
+
+	std::vector<float> knotsX, knotsY;
+	std::vector<value_type> tmp; // X-axis temporary values
+
+	size_t _cpx, _cpy; // # of control points
+	size_t _xres; // resolution for x-axis eval before doing 2D expansion
+	size_t _yres;
+
+	std::vector<SplineGridCtrlPoint*> ctrlp;
+};
+
+
+#endif