port from perforce

evoke-64k/trunk/ev10/camerahelper.cpp

@@ -0,0 +1,23 @@
+#include "camerahelper.h"
+#include "globals.h"
+
+void FillCameraMatrix( D3DXVECTOR3 v3Pos, D3DXVECTOR3 v3Rot, D3DXMATRIX* CamMat )
+{
+	float fYLeft= cos( v3Rot.y );
+	g_CamFront.x= -sin( v3Rot.x ) * fYLeft ;
+	g_CamFront.y= -sin( v3Rot.y );
+	g_CamFront.z= cos( v3Rot.x ) * fYLeft ;
+	D3DXVec3Normalize(&g_CamFront, &g_CamFront);
+
+	D3DXMatrixRotationYawPitchRoll( CamMat,
+									-v3Rot.x,
+									v3Rot.y,
+									v3Rot.z );
+
+	D3DXMATRIX CamMove;
+	D3DXMatrixTranslation( &CamMove, v3Pos.x, v3Pos.y, v3Pos.z );
+	D3DXMatrixMultiply( CamMat, CamMat, &CamMove );
+
+
+	D3DXMatrixInverse(CamMat, NULL, CamMat );
+}