Clamp model bounding box values before centering view

Set far Z to 2^24 so really really really large models show up

src/stdlib/graphics/GraphicsUtils.cpp

@@ -119,7 +119,7 @@ void SetProjection( const float flFOV, const int iWidth, const int iHeight )
 {
 	glMatrixMode( GL_PROJECTION );
 	glLoadIdentity();
-	gluPerspective( flFOV, ( GLfloat ) iWidth / ( GLfloat ) iHeight, 1.0f, 4096.0f );
+	gluPerspective( flFOV, ( GLfloat ) iWidth / ( GLfloat ) iHeight, 1.0f, 1 << 24 );
 }
 
 void DrawBox( const glm::vec3* const v )

src/tools/hlmv/CHLMVState.cpp

@@ -1,3 +1,5 @@
+#include "shared/Utility.h"
+
 #include "shared/studiomodel/CStudioModel.h"
 
 #include "game/entity/CBaseEntityList.h"
@@ -93,6 +95,14 @@ void CHLMVState::CenterView()
 	glm::vec3 min, max;
 	m_pEntity->ExtractBbox( min, max );
 
+	//Clamp the values to a reasonable range
+	for( int i = 0; i < 3; ++i )
+	{
+		//Use different limits for min and max so centering won't end up setting origin to 0 0 0
+		min[ i ] = clamp( min[ i ], -2000.f, 2000.f );
+		max[ i ] = clamp( max[ i ], -1000.f, 1000.f );
+	}
+
 	float dx = max[ 0 ] - min[ 0 ];
 	float dy = max[ 1 ] - min[ 1 ];
 	float dz = max[ 2 ] - min[ 2 ];