Steve Pham
38 lines
1.3 KiB
C++
38 lines
1.3 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#include "SurfaceData_precompiled.h"
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#include <SurfaceData/Utility/SurfaceDataUtility.h>
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#include <Atom/RPI.Reflect/Model/ModelAssetCreator.h>
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namespace SurfaceData
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{
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bool GetMeshRayIntersection(
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const AZ::RPI::ModelAsset& meshAsset, const AZ::Transform& meshTransform, const AZ::Transform& meshTransformInverse,
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const AZ::Vector3& rayOrigin, const AZ::Vector3& rayDirection, AZ::Vector3& outPosition, AZ::Vector3& outNormal)
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{
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AZ_PROFILE_FUNCTION(AZ::Debug::ProfileCategory::Entity);
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// Transform everything into model space
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const AZ::Vector3 rayOriginLocal = meshTransformInverse.TransformPoint(rayOrigin);
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const AZ::Vector3 rayDirectionLocal = meshTransformInverse.TransformVector(rayDirection).GetNormalized();
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float distance = FLT_MAX;
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AZ::Vector3 normalLocal;
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if (meshAsset.LocalRayIntersectionAgainstModel(rayOriginLocal, rayDirectionLocal, distance, normalLocal))
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{
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// Transform everything back to world space
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outPosition = meshTransform.TransformPoint(rayOriginLocal + (rayDirectionLocal * distance));
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outNormal = meshTransform.TransformVector(normalLocal);
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return true;
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}
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return false;
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}
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}
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