mirror of
https://github.com/TorqueGameEngines/Torque3D.git
synced 2026-01-19 20:24:49 +00:00
151 lines
4.3 KiB
C++
151 lines
4.3 KiB
C++
//-----------------------------------------------------------------------------
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// Copyright (c) 2012 GarageGames, LLC
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//-----------------------------------------------------------------------------
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#ifndef _CLIPPEDPOLYLIST_H_
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#define _CLIPPEDPOLYLIST_H_
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#ifndef _MMATH_H_
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#include "math/mMath.h"
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#endif
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#ifndef _TVECTORSPEC_H_
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#include "core/util/tVectorSpecializations.h"
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#endif
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#ifndef _ABSTRACTPOLYLIST_H_
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#include "collision/abstractPolyList.h"
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#endif
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#define CLIPPEDPOLYLIST_FLAG_ALLOWCLIPPING 0x01
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/// The clipped polylist class takes the geometry passed to it and clips
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/// it against the PlaneList set.
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///
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/// It also contains helper functions for
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/// @see AbstractPolyList
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class ClippedPolyList : public AbstractPolyList
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{
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void memcpy(U32* d, U32* s,U32 size);
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public:
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struct Vertex {
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Point3F point;
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U32 mask;
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};
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struct Poly {
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PlaneF plane;
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SceneObject* object;
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BaseMatInstance* material;
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U32 vertexStart;
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U32 vertexCount;
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U32 surfaceKey;
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U32 polyFlags;
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};
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/// ???
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static bool allowClipping;
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typedef Vector<PlaneF> PlaneList;
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typedef Vector<Vertex> VertexList;
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typedef Vector<Poly> PolyList;
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typedef FastVector<U32> IndexList;
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typedef PlaneList::iterator PlaneListIterator;
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typedef VertexList::iterator VertexListIterator;
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typedef PolyList::iterator PolyListIterator;
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typedef IndexList::iterator IndexListIterator;
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// Internal data
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PolyList mPolyList;
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VertexList mVertexList;
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IndexList mIndexList;
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// Temporary lists used by triangulate and kept
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// here to reduce memory allocations.
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PolyList mTempPolyList;
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IndexList mTempIndexList;
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const static U32 IndexListReserveSize = 128;
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/// The per-vertex normals.
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/// @see generateNormals()
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Vector<VectorF> mNormalList;
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PlaneList mPolyPlaneList;
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/// The list of planes to clip against.
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///
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/// This should be set before filling the polylist.
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PlaneList mPlaneList;
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/// If non-zero any poly facing away from this
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/// normal is removed from the list.
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///
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/// This should be set before filling the polylist.
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VectorF mNormal;
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/// If the dot product result between a poly's normal and mNormal is greater
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/// than this value it will be rejected.
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/// The default value is 0.
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/// 90 degrees = mCos( mDegToRad( 90.0f ) = 0
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F32 mNormalTolCosineRadians;
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//
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ClippedPolyList();
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~ClippedPolyList();
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void clear();
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// AbstractPolyList
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bool isEmpty() const;
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U32 addPoint(const Point3F& p);
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U32 addPointAndNormal(const Point3F& p, const Point3F& normal);
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U32 addPlane(const PlaneF& plane);
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void begin(BaseMatInstance* material,U32 surfaceKey);
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void plane(U32 v1,U32 v2,U32 v3);
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void plane(const PlaneF& p);
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void plane(const U32 index);
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void vertex(U32 vi);
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void end();
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/// Often after clipping you'll end up with orphan verticies
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/// that are unused by the poly list. This removes these unused
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/// verts and updates the index list.
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void cullUnusedVerts();
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/// This breaks all polys in the polylist into triangles.
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void triangulate();
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/// Generates averaged normals from the poly normals.
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/// @see mNormalList
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void generateNormals();
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protected:
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// AbstractPolyList
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const PlaneF& getIndexedPlane(const U32 index);
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};
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#endif
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