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authorgit perforce import user <a@b>2016-10-25 12:29:14 -0600
committerSheikh Dawood Abdul Ajees <Sheikh Dawood Abdul Ajees>2016-10-25 18:56:37 -0500
commit3dfe2108cfab31ba3ee5527e217d0d8e99a51162 (patch)
treefa6485c169e50d7415a651bf838f5bcd0fd3bfbd /APEX_1.4/common/include/CurveImpl.h
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Initial commit:
PhysX 3.4.0 Update @ 21294896 APEX 1.4.0 Update @ 21275617 [CL 21300167]
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+/*
+ * Copyright (c) 2008-2015, NVIDIA CORPORATION. All rights reserved.
+ *
+ * NVIDIA CORPORATION and its licensors retain all intellectual property
+ * and proprietary rights in and to this software, related documentation
+ * and any modifications thereto. Any use, reproduction, disclosure or
+ * distribution of this software and related documentation without an express
+ * license agreement from NVIDIA CORPORATION is strictly prohibited.
+ */
+
+
+#ifndef __CURVE_IMPL_H__
+#define __CURVE_IMPL_H__
+
+#include "Apex.h"
+#include "PxAssert.h"
+#include "nvparameterized/NvParameterized.h"
+#include "PsArray.h"
+#include "Curve.h"
+#include <ApexUsingNamespace.h>
+
+namespace nvidia
+{
+namespace apex
+{
+
+typedef physx::Array<Vec2R> Vec2RPointArray;
+
+/**
+ The CurveImpl is a class for storing control points on a curve and evaluating the results later.
+*/
+class CurveImpl : public Curve
+{
+public:
+ CurveImpl()
+ {}
+
+ ~CurveImpl()
+ {}
+
+ /**
+ Retrieve the output Y for the specified input x, based on the properties of the stored curve described
+ by mControlPoints.
+ */
+ float evaluate(float x) const;
+
+ /**
+ Add a control point to the list of control points, returning the index of the new point.
+ */
+ uint32_t addControlPoint(const Vec2R& controlPoint);
+
+ /**
+ Add a control points to the list of control points. Assuming the
+ hPoints points to a list of vec2s
+ */
+ void addControlPoints(::NvParameterized::Interface* param, ::NvParameterized::Handle& hPoints);
+
+ /**
+ Locates the control points that contain x, placing the resulting control points in the two
+ out parameters. Returns true if the points were found, false otherwise. If the points were not
+ found, the output variables are untouched
+ */
+ bool calculateControlPoints(float x, Vec2R& outXPoints, Vec2R& outYPoints) const;
+
+ /**
+ Locates the first control point with x larger than xValue or the nimber of control points if such point doesn't exist
+ */
+ uint32_t calculateFollowingControlPoint(float xValue) const;
+
+ ///get the array of control points
+ const Vec2R* getControlPoints(uint32_t& outCount) const;
+
+private:
+ // mControlPoints is a sorted list of control points for a curve. Currently, the curve is a lame
+ // lirp'd curve. We could add support for other curvetypes in the future, either bezier curves,
+ // splines, etc.
+ Vec2RPointArray mControlPoints;
+};
+
+}
+} // namespace apex
+
+#endif /* __CURVE_IMPL_H__ */