58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: A set of utilities to deal with camera transforms
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//
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//===========================================================================//
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#ifndef CAMERAUTILS_H
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#define CAMERAUTILS_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "tier2/tier2.h"
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#include "Color.h"
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//-----------------------------------------------------------------------------
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// Forward declarations
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//-----------------------------------------------------------------------------
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class Vector;
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class QAngle;
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class IMaterial;
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struct matrix3x4_t;
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class VMatrix;
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//-----------------------------------------------------------------------------
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// Camera state
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// TODO: Maybe this should be a base class of CViewSetup?
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//-----------------------------------------------------------------------------
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struct Camera_t
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{
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Vector m_origin;
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QAngle m_angles;
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float m_flFOV;
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float m_flZNear;
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float m_flZFar;
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};
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//-----------------------------------------------------------------------------
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// accessors for generated matrices
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//-----------------------------------------------------------------------------
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void ComputeViewMatrix( VMatrix *pWorldToCamera, const Camera_t& camera );
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void ComputeViewMatrix( matrix3x4_t *pWorldToCamera, const Camera_t& camera );
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void ComputeProjectionMatrix( VMatrix *pCameraToProjection, const Camera_t& camera, int width, int height );
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//-----------------------------------------------------------------------------
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// Computes the screen space position given a screen size
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//-----------------------------------------------------------------------------
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void ComputeScreenSpacePosition( Vector2D *pScreenPosition, const Vector &vecWorldPosition,
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const Camera_t &camera, int width, int height );
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#endif // CAMERAUTILS_H
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