gpuCache/gpuCacheIsectUtil.h

#ifndef _gpuCacheIsectUtil_h_
#define _gpuCacheIsectUtil_h_
// Copyright 2015 Autodesk, Inc. All rights reserved.
// 
// Use of this software is subject to the terms of the Autodesk
// license agreement provided at the time of installation or download,
// or which otherwise accompanies this software in either electronic
// or hard copy form.

#include <maya/MPoint.h>
#include <maya/MVector.h>
#include <maya/MBoundingBox.h>

namespace GPUCache {
    class  gpuCacheIsectUtil
    {
    public:
        static int intersectRayWithBox(
            MPoint minPoint,
            MPoint maxPoint,
            const MPoint&   rayOrigin,
            const MVector&  rayDirection,
            double          isectParams[2]
        );

        static bool firstRayIntersection( 
            MPoint bboxMin,
            MPoint bboxMax,
            const MPoint&       rayOrigin,
            const MVector&      rayDirection,
            double*         isectParam,
            MPoint *        isectPoint
            );

        static bool intersectPlane(
            const MPoint &planePoint, const MVector &planeNormal, 
            const MPoint& rayPoint, const MVector &rayDirection, double &t);
            
        static bool getClosestPointOnTri(
            const MPoint &toThisPoint, 
            const MPoint &pt1, const MPoint &pt2, const MPoint &pt3, 
            MPoint &theClosestPoint, double &currDist);

        static double getClosestPointOnBox(const MPoint& point, const MBoundingBox& bbox, MPoint& closestPoint);
        static double getEdgeSnapPointOnBox(const MPoint& raySource, const MVector& rayDirection, const MBoundingBox& bbox, MPoint& snapPoint);
        static double getEdgeSnapPointOnTriangle(const MPoint& raySource, const MVector& rayDirection, const MPoint& vert1, const MPoint& vert2, const MPoint& vert3, MPoint& snapPoint);

        static double getClosestPointOnLine(const MPoint& queryPoint, const MPoint& pt1, const MPoint& pt2, MPoint& closestPoint);

        static void getClosestPointToRayOnLine(const MPoint& vert1, const MPoint& vert2, const MPoint& raySource, const MVector& rayDirection, MPoint& closestPoint, double& percent);

    private:

    };

}
#endif