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exchange/exchangesource/Collision/createtessellatedbox.cpp
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exchange/exchangesource/Collision/createtessellatedbox.cpp
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/***********************************************************************************************************************
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*
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* Copyright (c) 2010 - 2022 by Tech Soft 3D, Inc.
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* The information contained herein is confidential and proprietary to Tech Soft 3D, Inc., and considered a trade secret
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* as defined under civil and criminal statutes. Tech Soft 3D shall pursue its civil and criminal remedies in the event
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* of unauthorized use or misappropriation of its trade secrets. Use of this information by anyone other than authorized
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* employees of Tech Soft 3D, Inc. is granted only under a written non-disclosure agreement, expressly prescribing the
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* scope and manner of such use.
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*
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***********************************************************************************************************************/
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/**
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\file createtessellatedbox.cpp
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This file demonstrates how to create a simple A3DPolyBrepModel with triangle only from a A3DBoundingBoxData.
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It's based on the CreatePRCCubes samples
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***********************************************************************************************************************/
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#include <A3DSDKIncludes.h>
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#include "../common.hpp"
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static A3DDouble stCubeNormals[18] = {
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1., 0., 0.,
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-1., 0., 0.,
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0., 1., 0.,
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0., -1., 0.,
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0., 0., 1.,
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0., 0., -1.
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};
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static A3DUns32 stCubeFacesNormalPTriangles[48] =
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{
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// N, P, P, P, N, P, P, P
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12, 0, 3, 6, 12, 6, 3, 9, // Face 0
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6, 6, 9, 12, 6, 12, 9, 15, // Face 1
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15, 12, 15, 18, 15, 18, 15, 21, // Face 2
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9, 18, 21, 0, 9, 0, 21, 3, // Face 3
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0, 3, 21, 9, 0, 9, 21, 15, // Face 4
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3, 18, 0, 12, 3, 12, 0, 6, // Face 5
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};
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//#####################################################################################################################
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static void freeTess3DData(A3DTess3DData& sTess3DData)
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{
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free(sTess3DData.m_pdNormals);
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free(sTess3DData.m_puiTriangulatedIndexes);
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for (A3DUns32 ui = 0; ui < sTess3DData.m_uiFaceTessSize; ++ui)
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{
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free(sTess3DData.m_psFaceTessData[ui].m_puiSizesTriangulated);
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}
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free(sTess3DData.m_psFaceTessData);
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}
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//#####################################################################################################################
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// Create a A3DTess3D from a A3DBoundingBoxData with only triangles
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static A3DStatus CreateA3DTess3DFromABBox(A3DBoundingBoxData const & sABBox, A3DTess3D ** ppTess3D)
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{
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A3DStatus iRet = A3D_SUCCESS;
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A3DTess3DData sTess3DData;
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A3D_INITIALIZE_DATA(A3DTess3DData, sTess3DData);
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// Normal coordinates
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sTess3DData.m_uiNormalSize = 18;
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sTess3DData.m_pdNormals = static_cast<A3DDouble*>(malloc((size_t)sTess3DData.m_uiNormalSize * sizeof(A3DDouble)));
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for (A3DUns32 ui = 0; ui < sTess3DData.m_uiNormalSize; ++ui)
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sTess3DData.m_pdNormals[ui] = stCubeNormals[ui];
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sTess3DData.m_uiTriangulatedIndexSize = 8 * 6;
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sTess3DData.m_puiTriangulatedIndexes = (A3DUns32*)malloc((size_t)sTess3DData.m_uiTriangulatedIndexSize * sizeof(A3DUns32));
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for (A3DUns32 ui = 0; ui < sTess3DData.m_uiTriangulatedIndexSize; ++ui)
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{
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sTess3DData.m_puiTriangulatedIndexes[ui] = stCubeFacesNormalPTriangles[ui];
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}
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// Faces
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sTess3DData.m_bHasFaces = true;
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sTess3DData.m_uiFaceTessSize = 6;
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sTess3DData.m_psFaceTessData = static_cast<A3DTessFaceData*>(malloc((size_t)sTess3DData.m_uiFaceTessSize * sizeof(A3DTessFaceData)));
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for (A3DUns32 ui = 0; ui < sTess3DData.m_uiFaceTessSize; ++ui)
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{
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A3DTessFaceData& sFace = sTess3DData.m_psFaceTessData[ui];
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A3D_INITIALIZE_DATA(A3DTessFaceData, sFace);
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sFace.m_usUsedEntitiesFlags = kA3DTessFaceDataTriangleOneNormal;
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sFace.m_uiStartTriangulated = ui * 8;
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sFace.m_uiSizesTriangulatedSize = 1; // size of the next array
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sFace.m_puiSizesTriangulated = (A3DUns32*)malloc(sFace.m_uiSizesTriangulatedSize * A3DUns32(sizeof(A3DUns32)));
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sFace.m_puiSizesTriangulated[0] = 2; // number of triangles for this face
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}
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iRet = A3DTess3DCreate(&sTess3DData, ppTess3D);
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freeTess3DData(sTess3DData);
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CHECK_RET(iRet);
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A3DTessBaseData sTessBaseData;
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A3D_INITIALIZE_DATA(A3DTessBaseData, sTessBaseData);
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sTessBaseData.m_bIsCalculated = false;
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// Point coordinates
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sTessBaseData.m_uiCoordSize = 8 * 3;
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sTessBaseData.m_pdCoords = static_cast<A3DDouble*>(malloc((size_t)sTessBaseData.m_uiCoordSize * sizeof(A3DDouble)));
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sTessBaseData.m_pdCoords[0] = sABBox.m_sMin.m_dX;
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sTessBaseData.m_pdCoords[1] = sABBox.m_sMin.m_dY;
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sTessBaseData.m_pdCoords[2] = sABBox.m_sMax.m_dZ;
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sTessBaseData.m_pdCoords[3] = sABBox.m_sMax.m_dX;
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sTessBaseData.m_pdCoords[4] = sABBox.m_sMin.m_dY;
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sTessBaseData.m_pdCoords[5] = sABBox.m_sMax.m_dZ;
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sTessBaseData.m_pdCoords[6] = sABBox.m_sMin.m_dX;
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sTessBaseData.m_pdCoords[7] = sABBox.m_sMax.m_dY;
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sTessBaseData.m_pdCoords[8] = sABBox.m_sMax.m_dZ;
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sTessBaseData.m_pdCoords[9] = sABBox.m_sMax.m_dX;
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sTessBaseData.m_pdCoords[10] = sABBox.m_sMax.m_dY;
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sTessBaseData.m_pdCoords[11] = sABBox.m_sMax.m_dZ;
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sTessBaseData.m_pdCoords[12] = sABBox.m_sMin.m_dX;
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sTessBaseData.m_pdCoords[13] = sABBox.m_sMax.m_dY;
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sTessBaseData.m_pdCoords[14] = sABBox.m_sMin.m_dZ;
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sTessBaseData.m_pdCoords[15] = sABBox.m_sMax.m_dX;
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sTessBaseData.m_pdCoords[16] = sABBox.m_sMax.m_dY;
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sTessBaseData.m_pdCoords[17] = sABBox.m_sMin.m_dZ;
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sTessBaseData.m_pdCoords[18] = sABBox.m_sMin.m_dX;
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sTessBaseData.m_pdCoords[19] = sABBox.m_sMin.m_dY;
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sTessBaseData.m_pdCoords[20] = sABBox.m_sMin.m_dZ;
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sTessBaseData.m_pdCoords[21] = sABBox.m_sMax.m_dX;
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sTessBaseData.m_pdCoords[22] = sABBox.m_sMin.m_dY;
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sTessBaseData.m_pdCoords[23] = sABBox.m_sMin.m_dZ;
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iRet = A3DTessBaseSet(*ppTess3D, &sTessBaseData);
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free(sTessBaseData.m_pdCoords);
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return iRet;
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}
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//######################################################################################################################
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static A3DStatus createPolyBrepModelFromA3DTess3D(A3DRiPolyBrepModel** ppPolyBREP, A3DTess3D* pTess3D)
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{
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A3DStatus iRet = A3D_SUCCESS;
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A3DRiPolyBrepModelData sPolyBrepModelData;
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A3D_INITIALIZE_DATA(A3DRiPolyBrepModelData, sPolyBrepModelData);
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sPolyBrepModelData.m_bIsClosed = TRUE;
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CHECK_RET(A3DRiPolyBrepModelCreate(&sPolyBrepModelData, ppPolyBREP));
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// assign the cube tessellation to the PolyBrepModel
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A3DRiRepresentationItemData sRiData;
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A3D_INITIALIZE_DATA(A3DRiRepresentationItemData, sRiData);
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sRiData.m_pTessBase = pTess3D;
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sRiData.m_pCoordinateSystem = NULL;
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CHECK_RET(A3DRiRepresentationItemSet(*ppPolyBREP, &sRiData));
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return iRet;
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}
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//#####################################################################################################################
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// Create a A3DRiPolyBrepModel from a A3DBoundingBoxData with only triangles
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A3DStatus CreatePolyBrepModelFromABBox(A3DBoundingBoxData const & sABBox, A3DRiPolyBrepModel ** pRiPolyBrepModel)
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{
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A3DTess3D * pTess3D = nullptr;
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CHECK_RET(CreateA3DTess3DFromABBox(sABBox, &pTess3D));
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CHECK_RET(createPolyBrepModelFromA3DTess3D(pRiPolyBrepModel, pTess3D));
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return A3D_SUCCESS;
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}
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