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79 lines
3.1 KiB
C++
79 lines
3.1 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project. For complete copyright and license terms please see the LICENSE at the root of this distribution.
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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 <SceneAPI/SceneData/GraphData/MeshData.h>
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#include <SceneAPI/SceneData/GraphData/MeshDataPrimitiveUtils.h>
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#include <algorithm>
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namespace AZ
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{
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namespace SceneData
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{
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namespace GraphData
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{
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namespace DataTypes = AZ::SceneAPI::DataTypes;
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std::unique_ptr<DataTypes::IMeshData > MeshDataPrimitiveUtils::CreateBox(const AZ::Vector3& dimensions, unsigned int materialId)
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{
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return CreateBox(dimensions.GetX(), dimensions.GetY(), dimensions.GetZ(), materialId);
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}
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std::unique_ptr<DataTypes::IMeshData> MeshDataPrimitiveUtils::CreateBox(float xDimension, float yDimension, float zDimension, unsigned int materialId)
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{
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const float c_minDimension = 0.00001f;
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xDimension = std::max(xDimension, c_minDimension);
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yDimension = std::max(yDimension, c_minDimension);
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zDimension = std::max(zDimension, c_minDimension);
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xDimension /= 2.0f;
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yDimension /= 2.0f;
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zDimension /= 2.0f;
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//assume box is centered
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//assume clockwise rotation for faces
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MeshData* meshData = new MeshData();
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//clockwise looking from neg x
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meshData->AddPosition(Vector3(-xDimension, -yDimension, -zDimension));
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meshData->AddPosition(Vector3(-xDimension, -yDimension, zDimension));
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meshData->AddPosition(Vector3(-xDimension, yDimension, zDimension));
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meshData->AddPosition(Vector3(-xDimension, yDimension, -zDimension));
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//clockwise looking from pos x
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meshData->AddPosition(Vector3(xDimension, -yDimension, -zDimension));
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meshData->AddPosition(Vector3(xDimension, yDimension, -zDimension));
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meshData->AddPosition(Vector3(xDimension, yDimension, zDimension));
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meshData->AddPosition(Vector3(xDimension, -yDimension, zDimension));
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//negx
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meshData->AddFace(0, 1, 2, materialId);
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meshData->AddFace(0, 2, 3, materialId);
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//x
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meshData->AddFace(4, 5, 6, materialId);
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meshData->AddFace(4, 6, 7, materialId);
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//negy
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meshData->AddFace(0, 4, 7, materialId);
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meshData->AddFace(0, 7, 1, materialId);
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//y
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meshData->AddFace(3, 2, 6, materialId);
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meshData->AddFace(3, 6, 5, materialId);
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//negz
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meshData->AddFace(0, 3, 4, materialId);
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meshData->AddFace(4, 3, 5, materialId);
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//z
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meshData->AddFace(7, 6, 2, materialId);
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meshData->AddFace(7, 2, 1, materialId);
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return std::unique_ptr<DataTypes::IMeshData>(meshData);
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}
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}
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}
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}
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