janwas
c0ed950657
this snowballed into a massive search+destroy of the hodgepodge of mostly equivalent types we had in use (int, uint, unsigned, unsigned int, i32, u32, ulong, uintN). it is more efficient to use 64-bit types in 64-bit mode, so the preferred default is size_t (for anything remotely resembling a size or index). tile coordinates are ssize_t to allow more efficient conversion to/from floating point. flags are int because we almost never need more than 15 distinct bits, bit test/set is not slower and int is fastest to type. finally, some data that is pretty much directly passed to OpenGL is now typed accordingly. after several hours, the code now requires fewer casts and less guesswork. other changes: - unit and player IDs now have an "invalid id" constant in the respective class to avoid casting and -1 - fix some endian/64-bit bugs in the map (un)packing. added a convenience function to write/read a size_t. - ia32: change CPUID interface to allow passing in ecx (required for cache topology detection, which I need at work). remove some unneeded functions from asm, replace with intrinsics where possible. This was SVN commit r5942.
86 lines
2.0 KiB
C++
86 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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*/
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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 size_t no_vertex = ~0u;
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typedef std::vector<CVector3D> Vertices;
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typedef std::vector<size_t> 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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