alexpete
87 lines
3.5 KiB
C++
87 lines
3.5 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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#pragma once
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#include <AzCore/RTTI/RTTI.h>
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#include <AzCore/Interface/Interface.h>
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#include <AzCore/std/containers/array.h>
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#include <NvCloth/ITangentSpaceHelper.h>
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namespace NvCloth
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{
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//! Implementation of the ITangentSpaceHelper interface.
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class TangentSpaceHelper
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: public AZ::Interface<ITangentSpaceHelper>::Registrar
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{
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public:
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AZ_RTTI(TangentSpaceHelper, "{2F8400BF-045A-49C3-B9D1-356011907E62}", ITangentSpaceHelper);
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protected:
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// ITangentSpace overrides ...
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bool CalculateNormals(
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const AZStd::vector<SimParticleFormat>& vertices,
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const AZStd::vector<SimIndexType>& indices,
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AZStd::vector<AZ::Vector3>& outNormals) override;
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bool CalculateTangentsAndBitagents(
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const AZStd::vector<SimParticleFormat>& vertices,
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const AZStd::vector<SimIndexType>& indices,
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const AZStd::vector<SimUVType>& uvs,
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const AZStd::vector<AZ::Vector3>& normals,
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AZStd::vector<AZ::Vector3>& outTangents,
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AZStd::vector<AZ::Vector3>& outBitangents) override;
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bool CalculateTangentSpace(
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const AZStd::vector<SimParticleFormat>& vertices,
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const AZStd::vector<SimIndexType>& indices,
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const AZStd::vector<SimUVType>& uvs,
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AZStd::vector<AZ::Vector3>& outTangents,
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AZStd::vector<AZ::Vector3>& outBitangents,
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AZStd::vector<AZ::Vector3>& outNormals) override;
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private:
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using TriangleIndices = AZStd::array<SimIndexType, 3>;
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using TrianglePositions = AZStd::array<AZ::Vector3, 3>;
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using TriangleUVs = AZStd::array<SimUVType, 3>;
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using TriangleEdges = AZStd::array<AZ::Vector3, 2>;
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void GetTriangleData(
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size_t triangleIndex,
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const AZStd::vector<SimIndexType>& indices,
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const AZStd::vector<SimParticleFormat>& vertices,
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TriangleIndices& triangleIndices,
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TrianglePositions& trianglePositions,
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TriangleEdges& triangleEdges);
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void GetTriangleData(
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size_t triangleIndex,
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const AZStd::vector<SimIndexType>& indices,
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const AZStd::vector<SimParticleFormat>& vertices,
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const AZStd::vector<SimUVType>& uvs,
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TriangleIndices& triangleIndices,
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TrianglePositions& trianglePositions,
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TriangleEdges& triangleEdges,
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TriangleUVs& triangleUVs);
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bool ComputeNormal(const TriangleEdges& triangleEdges, AZ::Vector3& normal);
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bool ComputeTangentAndBitangent(
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const TriangleUVs& triangleUVs, const TriangleEdges& triangleEdges,
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AZ::Vector3& tangent, AZ::Vector3& bitangent);
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void AdjustTangentAndBitangent(
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const AZ::Vector3& normal, AZ::Vector3& tangent, AZ::Vector3& bitangent);
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float GetVertexWeightInTriangle(AZ::u32 vertexIndexInTriangle, const TrianglePositions& trianglePositions);
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};
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} // namespace NvCloth
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