CmRenderBuffer.h

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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.  
 
#ifndef CM_RENDER_BUFFER_H
#define CM_RENDER_BUFFER_H
 
#include "common/PxRenderBuffer.h"
#include "CmUtils.h"
#include "foundation/PxArray.h"
#include "foundation/PxUserAllocated.h"
 
namespace physx
{
namespace Cm
{
    class RenderBuffer : public PxRenderBuffer, public PxUserAllocated
    {
 
        template <typename T>
        void append(PxArray<T>& dst, const T* src, PxU32 count)
        {
            dst.reserve(dst.size() + count);
            for(const T* end=src+count; src<end; ++src)
                dst.pushBack(*src);
        }
 
    public:
 
        RenderBuffer() :
            mPoints("renderBufferPoints"),
            mLines("renderBufferLines"),
            mTriangles("renderBufferTriangles")
        {}
        
 
        virtual PxU32 getNbPoints() const { return mPoints.size(); }
        virtual const PxDebugPoint* getPoints() const { return mPoints.begin(); }
        virtual void addPoint(const PxDebugPoint& point) { mPoints.pushBack(point); }
 
        virtual PxU32 getNbLines() const { return mLines.size(); }
        virtual const PxDebugLine* getLines() const { return mLines.begin(); }
        virtual void addLine(const PxDebugLine& line) { mLines.pushBack(line); }
        virtual PxDebugLine* reserveLines(const PxU32 nbLines) {return reserveContainerMemory(mLines, nbLines);}
 
        virtual PxDebugPoint* reservePoints(const PxU32 nbPoints) { return reserveContainerMemory(mPoints, nbPoints); }
 
        virtual PxU32 getNbTriangles() const { return mTriangles.size(); }
        virtual const PxDebugTriangle* getTriangles() const { return mTriangles.begin(); }
        virtual void addTriangle(const PxDebugTriangle& triangle) { mTriangles.pushBack(triangle); }
 
        virtual void append(const PxRenderBuffer& other)
        {
            append(mPoints, other.getPoints(), other.getNbPoints());
            append(mLines, other.getLines(), other.getNbLines());
            append(mTriangles, other.getTriangles(), other.getNbTriangles());
        }
 
        virtual void clear()
        {
            mPoints.clear(); 
            mLines.clear();
            mTriangles.clear();
        }
 
        virtual bool empty() const 
        {
            return mPoints.empty() && mLines.empty() && mTriangles.empty();
        }
 
        virtual void shift(const PxVec3& delta)
        {
            for(PxU32 i=0; i < mPoints.size(); i++)
                mPoints[i].pos += delta;
 
            for(PxU32 i=0; i < mLines.size(); i++)
            {
                mLines[i].pos0 += delta;
                mLines[i].pos1 += delta;
            }
 
            for(PxU32 i=0; i < mTriangles.size(); i++)
            {
                mTriangles[i].pos0 += delta;
                mTriangles[i].pos1 += delta;
                mTriangles[i].pos2 += delta;
            }
        }
 
        PxArray<PxDebugPoint>       mPoints;
        PxArray<PxDebugLine>        mLines;
        PxArray<PxDebugTriangle>    mTriangles;
    };
 
} // Cm
 
}
 
#endif