Initial commit

Torque/SDK/engine/sceneGraph/sgUtil.h

@@ -0,0 +1,56 @@
+//-----------------------------------------------------------------------------
+// Torque Game Engine
+// Copyright (C) GarageGames.com, Inc.
+//-----------------------------------------------------------------------------
+
+#ifndef _SGUTIL_H_
+#define _SGUTIL_H_
+
+#ifndef _PLATFORM_H_
+#include "platform/platform.h"
+#endif
+#ifndef _MPOINT_H_
+#include "math/mPoint.h"
+#endif
+
+class RectI;
+class MatrixF;
+
+struct SGWinding
+{
+   Point3F points[32];
+   U32     numPoints;
+};
+
+bool sgComputeNewFrustum(const F64*       oldFrustum,
+                         const F64        nearPlane,
+                         const F64        farPlane,
+                         const RectI&     oldViewport,
+                         const SGWinding* windings,
+                         const U32        numWindings,
+                         const MatrixF&   modelview,
+                         F64*             newFrustum,
+                         RectI&           newViewport,
+                         const bool       flippedMatrix);
+
+/// Compute frustrum planes.
+///
+/// Frustum parameters are:
+///  - [0] = left
+///  - [1] = right
+///  - [2] = top
+///  - [3] = bottom
+///  - [4] = near
+///  - [5] = far
+void sgComputeOSFrustumPlanes(const F64      frustumParameters[6],
+                              const MatrixF& worldSpaceToObjectSpace,
+                              const Point3F& wsCamPoint,
+                              PlaneF&        outFarPlane,
+                              PlaneF&        outXMinPlane,
+                              PlaneF&        outXMaxPlane,
+                              PlaneF&        outYMinPlane,
+                              PlaneF&        outYMaxPlane);
+
+void sgOrientClipPlanes(PlaneF * planes, const Point3F & camPos, const Point3F & leftUp, const Point3F & leftDown, const Point3F & rightUp, const Point3F & rightDown);
+
+#endif  // _H_SGUTIL_