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public/matsys_controls/vmtpreviewpanel.h

@@ -0,0 +1,81 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================
+
+#ifndef VMTPREVIEWPANEL_H
+#define VMTPREVIEWPANEL_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+#include "vgui_controls/Panel.h"
+#include "tier1/utlstring.h"
+#include "materialsystem/MaterialSystemUtil.h"
+#include "mathlib/vector.h"
+
+
+//-----------------------------------------------------------------------------
+// Forward declarations
+//-----------------------------------------------------------------------------
+
+
+//-----------------------------------------------------------------------------
+//
+// VMT Preview panel
+//
+//-----------------------------------------------------------------------------
+class CVMTPreviewPanel : public vgui::Panel
+{
+	DECLARE_CLASS_SIMPLE( CVMTPreviewPanel, vgui::Panel );
+
+public:
+	// constructor
+	CVMTPreviewPanel( vgui::Panel *pParent, const char *pName );
+	void SetVMT( const char *pMaterialName );
+	const char *GetVMT() const;
+
+	// Paints the texture
+	virtual void Paint( void );
+
+	// View it in 3D or 2D mode
+	void DrawIn3DMode( bool b3DMode );
+
+private:
+	// Two different preview methods
+	void DrawSphere( void );
+	void DrawRectangle( void );
+
+	// Set up a projection matrix for a 90 degree fov
+	void SetupProjectionMatrix( int nWidth, int nHeight );
+	void SetupOrthoMatrix( int nWidth, int nHeight );
+
+	// Sets the camera to look at the the thing we're spinning around
+	void LookAt( const Vector &vecLookAt, float flRadius );
+
+	// Sets up lighting state
+	void SetupLightingState();
+
+	// Draw a sphere
+	void RenderSphere( const Vector &vCenter, float flRadius, int nTheta, int nPhi );
+
+	// Draw sprite-card based materials
+	void RenderSpriteCard( const Vector &vCenter, float flRadius );
+
+	CUtlString m_VMTName;
+	CMaterialReference m_Material;
+	CTextureReference m_pLightmapTexture;
+	CTextureReference m_DefaultEnvCubemap;
+	Vector m_LightDirection;
+	Color m_LightColor;
+	float m_flLightIntensity;
+	Vector m_vecCameraDirection;
+	float m_flLastRotationTime;
+	bool m_bDrawIn3DMode;
+};
+
+
+#endif // VMTPREVIEWPANEL_H