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56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
//-----------------------------------------------------------------------------
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// V12 Engine
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//
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// Copyright (c) 2001 GarageGames.Com
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// Portions Copyright (c) 2001 by Sierra Online, Inc.
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//-----------------------------------------------------------------------------
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#ifndef _SGUTIL_H_
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#define _SGUTIL_H_
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#ifndef _PLATFORM_H_
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#include "Platform/platform.h"
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#endif
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#ifndef _MPOINT_H_
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#include "Math/mPoint.h"
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#endif
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class RectI;
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class MatrixF;
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struct SGWinding
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{
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Point3F points[32];
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U32 numPoints;
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};
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bool sgComputeNewFrustum(const F64* oldFrustum,
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const F64 nearPlane,
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const F64 farPlane,
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const RectI& oldViewport,
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const SGWinding* windings,
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const U32 numWindings,
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const MatrixF& modelview,
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F64* newFrustum,
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RectI& newViewport,
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const bool flippedMatrix);
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// Frustum parameters are:
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// [0] = left
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// [1] = right
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// [2] = top
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// [3] = bottom
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// [4] = near
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// [5] = far
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void sgComputeOSFrustumPlanes(const F64 frustumParameters[6],
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const MatrixF& worldSpaceToObjectSpace,
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const Point3F& wsCamPoint,
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PlaneF& outFarPlane,
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PlaneF& outXMinPlane,
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PlaneF& outXMaxPlane,
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PlaneF& outYMinPlane,
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PlaneF& outYMaxPlane);
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#endif // _H_SGUTIL_
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