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40 lines
1.6 KiB
40 lines
1.6 KiB
//========= Copyright © 1996-2005, Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//
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//=============================================================================//
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#ifndef C_TRACER_H
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#define C_TRACER_H
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class Vector;
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class ParticleDraw;
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class CMeshBuilder;
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//-----------------------------------------------------------------------------
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// Tracer_Draw(): draws a tracer, assuming the modelview matrix is identity
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// This function accepts all arguments in CAMERA (pre-projected) space
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//
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// arguments
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// [in] Vector& : The origin of the tracer (CAMERA space)
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// [in] Vector& : The direction and length of the tracer (CAMERA space)
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// [in] float : The tracer width (CAMERA space)
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// [in] float* : r, g, b, a (0 - 1)
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//-----------------------------------------------------------------------------
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void Tracer_Draw( ParticleDraw* pDraw, Vector const& start, Vector const& delta,
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float width, float* color, float startV = 0.0, float endV = 1.0 );
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void Tracer_Draw( CMeshBuilder *pMeshBuilder, Vector const& start, Vector const& delta, float width, float* color, float startV = 0.0, float endV = 1.0 );
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//-----------------------------------------------------------------------------
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// Computes the four verts to draw the tracer with, in the following order:
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// start vertex left side, start vertex right side
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// end vertex left side, end vertex right side
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// returne false if the tracer is offscreen
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//-----------------------------------------------------------------------------
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bool Tracer_ComputeVerts( const Vector &start, const Vector &delta, float width, Vector *pVerts );
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#endif // C_TRACER_H
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