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62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
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/*
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** Potential visible set (PVS) handling
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** Copyright (c) 2016 Magnus Norddahl
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**
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** This software is provided 'as-is', without any express or implied
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** warranty. In no event will the authors be held liable for any damages
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** arising from the use of this software.
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**
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** Permission is granted to anyone to use this software for any purpose,
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** including commercial applications, and to alter it and redistribute it
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** freely, subject to the following restrictions:
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**
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** 1. The origin of this software must not be misrepresented; you must not
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** claim that you wrote the original software. If you use this software
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** in a product, an acknowledgment in the product documentation would be
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** appreciated but is not required.
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** 2. Altered source versions must be plainly marked as such, and must not be
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** misrepresented as being the original software.
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** 3. This notice may not be removed or altered from any source distribution.
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**
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*/
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#pragma once
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#include "r_poly_triangle.h"
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#include "r_poly_intersection.h"
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class PolyCull
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{
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public:
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void CullScene(const TriMatrix &worldToClip);
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bool GetSegmentRangeForLine(double x1, double y1, double x2, double y2, int &sx1, int &sx2) const;
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void MarkSegmentCulled(int x1, int x2);
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bool IsSegmentCulled(int x1, int x2) const;
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std::vector<subsector_t *> PvsSectors;
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double MaxCeilingHeight = 0.0;
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double MinFloorHeight = 0.0;
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private:
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struct SolidSegment
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{
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SolidSegment(int x1, int x2) : X1(x1), X2(x2) { }
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int X1, X2;
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};
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void CullNode(void *node);
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int PointOnSide(const DVector2 &pos, const node_t *node);
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// Checks BSP node/subtree bounding box.
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// Returns true if some part of the bbox might be visible.
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bool CheckBBox(float *bspcoord);
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void ClearSolidSegments();
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std::vector<SolidSegment> SolidSegments;
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const int SolidCullScale = 3000;
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FrustumPlanes frustumPlanes;
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};
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