janwas
3195893d1c
- u_anim_name disambiguation - fix implementation of finite (use our fpclassify instead of compiler's routine) - รค -> ae - workaround for MAP_ANONYMOUS - fix GLint in ogl.cpp - add include for SIZE_MAX in string_s - avoid PIC clobbered error and speed up rdtsc a bit - add include for stat This was SVN commit r4170.
88 lines
2.0 KiB
C++
88 lines
2.0 KiB
C++
/**
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* =========================================================================
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* File : Brush.h
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* Project : Pyrogenesis
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* Description : CBrush, a class representing a convex object
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*
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* @author Nicolai Haehnle <nicolai@wildfiregames.com>
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* =========================================================================
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*/
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#ifndef maths_brush_h
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#define maths_brush_h
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#include "Vector3D.h"
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class CBound;
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class CFrustum;
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class CPlane;
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/**
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* Class CBrush: Represents a convex object, supports some CSG operations.
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*/
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class CBrush
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{
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public:
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CBrush() { }
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/**
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* CBrush: Construct a brush from a bounds object.
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*
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* @param bounds the CBound object to construct the brush from.
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*/
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CBrush(const CBound& bounds);
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/**
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* IsEmpty: Returns whether the brush is empty.
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*
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* @return @c true if the brush is empty, @c false otherwise
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*/
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bool IsEmpty() const { return m_Vertices.size() == 0; }
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/**
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* Bounds: Calculate the axis-aligned bounding box for this brush.
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*
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* @param result the resulting bounding box is stored here
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*/
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void Bounds(CBound& result) const;
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/**
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* Slice: Cut the object along the given plane, resulting in a smaller (or even empty)
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* brush representing the part of the object that lies in front of the plane.
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*
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* @param plane the slicing plane
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* @param result the resulting brush is stored here
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*/
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void Slice(const CPlane& plane, CBrush& result) const;
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/**
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* Intersect: Intersect the brush with the given frustum.
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*
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* @param frustum the frustum to intersect with
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* @param result the resulting brush is stored here
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*/
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void Intersect(const CFrustum& frustum, CBrush& result) const;
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/**
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* Render: Renders the brush as OpenGL polygons.
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*
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* @note the winding of the brush faces is undefined (i.e. it is undefined which
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* sides of the faces are the front faces)
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*/
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void Render() const;
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private:
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static const uint no_vertex = ~0u;
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typedef std::vector<CVector3D> Vertices;
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typedef std::vector<uint> FaceIndices;
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Vertices m_Vertices;
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FaceIndices m_Faces;
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struct Helper;
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};
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#endif // maths_brush_h
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