/usr/include/libwildmagic/Wm5Triangles.h is in libwildmagic-dev 5.13-1ubuntu3.
This file is owned by root:root, with mode 0o644.
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// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.1 (2010/10/01)
#ifndef WM5TRIANGLES_H
#define WM5TRIANGLES_H
#include "Wm5GraphicsLIB.h"
#include "Wm5Visual.h"
#include "Wm5Float2.h"
#include "Wm5APoint.h"
#include "Wm5VertexBufferAccessor.h"
namespace Wm5
{
class WM5_GRAPHICS_ITEM Triangles : public Visual
{
WM5_DECLARE_RTTI;
WM5_DECLARE_NAMES;
WM5_DECLARE_STREAM(Triangles);
protected:
// Abstract base class. Construction and destruction.
Triangles (PrimitiveType type = PT_TRIANGLES);
Triangles (PrimitiveType type, VertexFormat* vformat,
VertexBuffer* vbuffer, IndexBuffer* ibuffer);
public:
virtual ~Triangles ();
// These functions depend on the interpretation of the index buffer of
// the triangle primitive. The triangle <V0,V1,V2> is counterclockwise
// order. It is required that the vertex buffer have 3-tuple positions.
virtual int GetNumTriangles () const = 0;
virtual bool GetTriangle (int i, int& v0, int& v1, int& v2) const = 0;
bool GetModelTriangle (int i, APoint* modelTriangle) const;
bool GetWorldTriangle (int i, APoint* worldTriangle) const;
// Support for bounding-tree-based collision detection. The input index
// 'v' must be contained in the index buffer.
inline int GetNumVertices () const;
inline const Transform& GetWorldTransform () const;
Float3 GetPosition (int v) const;
// Geometric updates. See the comments in Wm5Visual.h about the
// input parameter.
virtual void UpdateModelSpace (UpdateType type);
private:
// Support for the geometric update.
void UpdateModelNormals (VertexBufferAccessor& vba);
// Specialized updates for the tangent space.
void UpdateModelTangentsUseGeometry (VertexBufferAccessor& vba);
void UpdateModelTangentsUseTCoords (VertexBufferAccessor& vba);
// This function is used by UpdateUseTCoord to compute a tangent vector at
// position0. The triangle has positions position0, position1, and
// position2, listed in counterclockwise order. The corresponding texture
// coordinates are tcoord0, tcoord1, and tcoord2, and are those associated
// with the texture coordinate 'channel' that was passed to
// UpdateUseTCoord.
static AVector ComputeTangent (
const APoint& position0, const Float2& tcoord0,
const APoint& position1, const Float2& tcoord1,
const APoint& position2, const Float2& tcoord2);
};
WM5_REGISTER_STREAM(Triangles);
typedef Pointer0<Triangles> TrianglesPtr;
#include "Wm5Triangles.inl"
}
#endif
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