GU_OSDPatchMap.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * NAME: GU_OSDPatchMap.h ( GU Library, C++)
 *
 * COMMENTS: Shared coarse-face to ptex patch mapping math for GU and GT.
 */

#pragma once

#include "GU_API.h"

#include <SYS/SYS_Types.h>
#include <UT/UT_Span.h>
#include <UT/UT_Vector2.h>

namespace GU_OSDPatchMap
{

GU_API bool                intrinsicCoarseUV(
                            exint coarseVertexCount,
                            UT_Span<UT_Vector2> coarseUV);

GU_API bool                faceToPatch(
                            int64 &patchId,
                            fpreal &patchU,
                            fpreal &patchV,
                            exint coarseVertexCount,
                            exint firstPatchId,
                            exint patchCount,
                            fpreal faceU,
                            fpreal faceV,
                            bool hasExplicitUV,
                            UT_Span<const UT_Vector2> coarseUV);

} // namespace GU_OSDPatchMap