\n\n\n\n
First – we’ll need to extend VirtualShape.h<\/em>.<\/p>\n\n\n\n 2. Open VirtualShape.h<\/em> and replace code by:<\/p>\n\n\n <\/p>\n\n\n\n New concept here is – “extensions”. They are needed for shapes with rounded corners and edges:<\/p>\n\n\n\n <\/p>\n\n\n\n Another change here – char* shapeType<\/em> instead of std::string<\/em>.<\/p>\n\n\n\n Have new platform-specific<\/strong> function here – myStrcpy_s()<\/em>, char array copy. Same situation as with myFopen_s()<\/em>. Another platform-specific function we will need soon is myMkDir()<\/em>, making a directory.<\/p>\n\n\n\n 3. Open platform.h<\/em> and replace code by<\/p>\n\n\n <\/p>\n\n\n\n 4. Open platform.cpp<\/em> and replace code by <\/p>\n\n\n <\/p>\n\n\n\n ModelBuilder <\/strong>class becomes dangerously big. We will split it in 2 layers. 1-st layer – basic functionality, we’ll call it ModelBuilder1base<\/strong>. <\/p>\n\n\n\n Only 1 new function – moveGroupDg(\u2026)<\/em> – shifts and rotates vertex group (added to place extensions to their places)<\/p>\n\n\n\n 5. Under modeler <\/em>add new Header File (.h) ModelBuilder1base.h<\/strong><\/p>\n\n\n\n Location: C:\\CPP\\engine\\modeler\\<\/em><\/p>\n\n\n\n Code:<\/p>\n\n\n <\/p>\n\n\n\n 6. Under modeler <\/em>add new C++ File (.cpp) ModelBuilder1base.cpp<\/strong><\/p>\n\n\n\n Location: C:\\CPP\\engine\\modeler\\<\/em><\/p>\n\n\n\n Code:<\/p>\n\n\n <\/p>\n\n\n\n Changes in ModelBuilder <\/strong>class:<\/p>\n\n\n\n a) Now it inherits ModelBuilder1base<\/em>. <\/p>\n\n\n\n b) New ModelBuilder<\/em>‘s functions:<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n 7. Open ModelBuilder.h<\/em> and replace code by:<\/p>\n\n\n <\/p>\n\n\n\n 8. Open ModelBuilder.cpp<\/em> and replace code by: <\/p>\n\n\n <\/p>\n\n\n\n 9. Open TheGame.cpp<\/em> and replace code by:<\/p>\n\n\n <\/p>\n\n\n\n The difference with previous version is:<\/p>\n\n\n\n TheGame::getReady()<\/em> now builds not just a “box”, but “box-tank” (box with rounded edges and corners), lines from 33 to 55.<\/p>\n\n\n\n Please note, that now instead of plain “front”, “right”, etc. we’re also using “front v”, “right all”, etc. This is about “extensions”:<\/p>\n\n\n\n <\/p>\n\n\n\n 10. Build and run:<\/p>\n\n\n\n Before:<\/strong><\/p>\n\n\n\n <\/p>\n\n\n\n After:<\/strong><\/p>\n\n\n\n <\/p>\n\n\n\n\n#pragma once\n#include "platform.h"\n\nclass VirtualShape\n{\npublic:\n\tchar shapeType[20] = "box";\n\tfloat whl[3] = { 0 }; \/\/width\/height\/length (x,y,z sizes\/dimensions)\n\tint sections[3] = { 1,1,1 }; \/\/number of sections for each axis\n\tint sectionsR = 1; \/\/number of radial sections\n\t\/\/side extensions\n\tfloat extU = 0; \/\/up\n\tfloat extD = 0; \/\/down\n\tfloat extL = 0; \/\/left\n\tfloat extR = 0; \/\/right\n\tfloat extF = 0; \/\/front\n\tfloat extB = 0; \/\/back\n\npublic:\n\tvoid setShapeType(std::string needType) { setShapeType(this, needType); };\n\tstatic void setShapeType(VirtualShape* pVS, std::string needType) { myStrcpy_s(pVS->shapeType, 20, (char*)needType.c_str()); };\n\tvoid setExt(float v) { setExt(this, v); };\n\tvoid setExtX(float v) { setExtX(this, v); };\n\tvoid setExtY(float v) { setExtY(this, v); };\n\tvoid setExtZ(float v) { setExtZ(this, v); };\n\tstatic void setExt(VirtualShape* pVS, float v) { pVS->extU = v; pVS->extD = v; pVS->extL = v; pVS->extR = v; pVS->extF = v; pVS->extB = v; };\n\tstatic void setExtX(VirtualShape* pVS, float v) { pVS->extL = v; pVS->extR = v; };\n\tstatic void setExtY(VirtualShape* pVS, float v) { pVS->extU = v; pVS->extD = v; };\n\tstatic void setExtZ(VirtualShape* pVS, float v) { pVS->extF = v; pVS->extB = v; };\n};\n\n<\/pre><\/div>\n\n\n![](\"https:\/\/writingagame.com\/img\/b01\/c20\/01.jpg\")
<\/p>\n\n\n\n
\n\n\n\n\n#pragma once\n#include <glad\/glad.h>\n#include <stdio.h>\n\ntypedef unsigned _int64 myUint64;\ntypedef unsigned _int32 myUint32;\ntypedef unsigned _int16 myUint16;\ntypedef unsigned _int8 myUint8;\n\nvoid mylog(const char* _Format, ...);\nvoid mySwapBuffers();\nvoid myPollEvents();\nint myFopen_s(FILE** pFile, const char* filePath, const char* mode);\nint myMkDir(const char* outPath);\nvoid myStrcpy_s(char* dst, int maxSize, const char* src);\n\n<\/pre><\/div>\n\n\n
\n\n\n\n\n#include <stdarg.h>\n#include <stdio.h>\n#include <GLFW\/glfw3.h>\n#include "platform.h"\n#include "TheGame.h"\n#include <direct.h> \/\/myMkDir: mkdir\n#include <sys\/stat.h> \/\/myMkDir: if file esists\n\nextern GLFWwindow* myMainWindow;\nextern TheGame theGame;\n\nvoid mylog(const char* _Format, ...) {\n#ifdef _DEBUG\n va_list _ArgList;\n va_start(_ArgList, _Format);\n vprintf(_Format, _ArgList);\n va_end(_ArgList);\n#endif\n};\nvoid mySwapBuffers() {\n glfwSwapBuffers(myMainWindow);\n}\nvoid myPollEvents() {\n glfwPollEvents();\n \/\/check if closing the window\n theGame.bExitGame = glfwWindowShouldClose(myMainWindow);\n \/\/check screen size\n int width, height;\n glfwGetFramebufferSize(myMainWindow, &width, &height);\n theGame.onScreenResize(width, height);\n}\nint myFopen_s(FILE** pFile, const char* filePath, const char* mode) {\n return fopen_s(pFile, filePath, mode);\n}\nint myMkDir(const char* outPath) {\n struct stat info;\n if (stat(outPath, &info) == 0)\n return 0; \/\/exists already\n int status = _mkdir(outPath);\n if (status == 0)\n return 1; \/\/Successfully created\n mylog("ERROR creating, status=%d\\n", status);\n return -1;\n}\nvoid myStrcpy_s(char* dst, int maxSize, const char* src) {\n strcpy_s(dst, maxSize, src);\n \/\/fill tail by zeros\n int strLen = strlen(dst);\n if (strLen < maxSize)\n for (int i = strLen; i < maxSize; i++)\n dst[i] = 0;\n}\n\n<\/pre><\/div>\n\n\n
\n\n\n\n\n#pragma once\n#include <string>\n#include <vector>\n#include "Vertex01.h"\n#include "Triangle01.h"\n#include "VirtualShape.h"\n#include "Group01.h"\n#include "Material.h"\n#include "GameSubj.h"\n\nclass ModelBuilder1base\n{\npublic:\n\tstd::vector<Vertex01*> vertices;\n\tstd::vector<Triangle01*> triangles;\n\tstd::vector<VirtualShape*> vShapesStack;\n\tstd::vector<Group01*> groupsStack;\n\tstd::vector<Material*> materialsList;\n\tstd::vector<int> subjNumbersList;\n\tint usingSubjN = -1;\n\tint usingMaterialN = -1;\n\tGroup01* pCurrentGroup = NULL;\npublic:\n\tvirtual ~ModelBuilder1base();\n\tint useSubjN(int subjN) { return useSubjN(this, subjN); };\n\tstatic int useSubjN(ModelBuilder1base* pMB, int subjN);\n\tint useMaterial(Material* pMT) { return useMaterial(this, pMT); };\n\tstatic int useMaterial(ModelBuilder1base* pMB, Material* pMT);\n\tstatic void lockGroup(ModelBuilder1base* pMB);\n\tstatic void releaseGroup(ModelBuilder1base* pMB);\n\tstatic int addVertex(ModelBuilder1base* pMB, float kx, float ky, float kz, float nx, float ny, float nz);\n\tstatic int add2triangles(ModelBuilder1base* pMB, int nNW, int nNE, int nSW, int nSE, int n);\n\tstatic int addTriangle(ModelBuilder1base* pMB, int n0, int n1, int n2);\n\tint buildDrawJobs(std::vector<GameSubj*> gameSubjs) { return buildDrawJobs(this, gameSubjs); };\n\tstatic int buildDrawJobs(ModelBuilder1base* pMB, std::vector<GameSubj*> gameSubjs);\n\tstatic int rearrangeArraysForDrawJob(ModelBuilder1base* pMB, std::vector<Vertex01*> allVertices, std::vector<Vertex01*> useVertices, std::vector<Triangle01*> useTriangles);\n\tstatic int buildSingleDrawJob(Material* pMT, std::vector<Vertex01*> useVertices, std::vector<Triangle01*> useTriangles);\n\tstatic int moveGroupDg(ModelBuilder1base* pMB, float aX, float aY, float aZ, float kX, float kY, float kZ);\n};\n\n<\/pre><\/div>\n\n\n
\n\n\n\n\n#include "ModelBuilder1base.h"\n#include "platform.h"\n#include "utils.h"\n#include "DrawJob.h"\n#include "Shader.h"\n\nextern float degrees2radians;\n\nModelBuilder1base::~ModelBuilder1base() {\n\t\/\/clear all vectors\n\tint itemsN = vertices.size();\n\tfor (int i = 0; i < itemsN; i++)\n\t\tdelete vertices.at(i);\n\tvertices.clear();\n\n\titemsN = triangles.size();\n\tfor (int i = 0; i < itemsN; i++)\n\t\tdelete triangles.at(i);\n\ttriangles.clear();\n\n\titemsN = vShapesStack.size();\n\tfor (int i = 0; i < itemsN; i++)\n\t\tdelete vShapesStack.at(i);\n\tvShapesStack.clear();\n\n\titemsN = groupsStack.size();\n\tfor (int i = 0; i < itemsN; i++)\n\t\tdelete groupsStack.at(i);\n\tgroupsStack.clear();\n\n\titemsN = materialsList.size();\n\tfor (int i = 0; i < itemsN; i++)\n\t\tdelete materialsList.at(i);\n\tmaterialsList.clear();\n\n\tsubjNumbersList.clear();\n}\nint ModelBuilder1base::useSubjN(ModelBuilder1base* pMB, int subjN) {\n\tpMB->usingSubjN = subjN;\n\tint itemsN = pMB->subjNumbersList.size();\n\tbool newN = true;\n\tif (itemsN > 0)\n\t\tfor (int i = 0; i < itemsN; i++)\n\t\t\tif (pMB->subjNumbersList.at(i) == subjN) {\n\t\t\t\tnewN = false;\n\t\t\t\tbreak;\n\t\t\t}\n\tif (newN)\n\t\tpMB->subjNumbersList.push_back(subjN);\n\treturn subjN;\n}\nint ModelBuilder1base::useMaterial(ModelBuilder1base* pMB, Material* pMT) {\n\tint itemsN = pMB->materialsList.size();\n\tif (itemsN > 0)\n\t\tfor (int i = 0; i < itemsN; i++)\n\t\t\tif (memcmp(pMB->materialsList.at(i), pMT, sizeof(Material)) == 0) {\n\t\t\t\tpMB->usingMaterialN = i;\n\t\t\t\treturn i;\n\t\t\t}\n\t\/\/if here - add new material to the list\n\tpMB->usingMaterialN = itemsN;\n\t\/\/create a copy of new Material and add to the list\n\tMaterial* pMTnew = new Material(*pMT);\n\tpMB->materialsList.push_back(pMTnew);\n\treturn itemsN;\n}\nint ModelBuilder1base::add2triangles(ModelBuilder1base* pMB, int nNW, int nNE, int nSW, int nSE, int n) {\n\t\/\/indexes: NorthWest, NorthEast, SouthWest,SouthEast\n\tif (n % 2 == 0) { \/\/even number\n\t\taddTriangle(pMB, nNW, nSW, nNE);\n\t\taddTriangle(pMB, nNE, nSW, nSE);\n\t}\n\telse { \/\/odd number\n\t\taddTriangle(pMB, nNW, nSE, nNE);\n\t\taddTriangle(pMB, nNW, nSW, nSE);\n\t}\n\treturn pMB->triangles.size() - 1;\n}\nint ModelBuilder1base::addTriangle(ModelBuilder1base* pMB, int i0, int i1, int i2) {\n\tTriangle01* pTR = new Triangle01();\n\tpMB->triangles.push_back(pTR);\n\tpTR->idx[0] = i0;\n\tpTR->idx[1] = i1;\n\tpTR->idx[2] = i2;\n\tpTR->subjN = pMB->usingSubjN;\n\tpTR->materialN = pMB->usingMaterialN;\n\treturn pMB->triangles.size() - 1;\n}\nvoid ModelBuilder1base::lockGroup(ModelBuilder1base* pMB) {\n\tif (pMB->pCurrentGroup != NULL)\n\t\tpMB->groupsStack.push_back(pMB->pCurrentGroup);\n\tpMB->pCurrentGroup = new Group01();\n\tpMB->pCurrentGroup->fromVertexN = pMB->vertices.size();\n\tpMB->pCurrentGroup->fromTriangleN = pMB->triangles.size();\n}\nvoid ModelBuilder1base::releaseGroup(ModelBuilder1base* pMB) {\n\tdelete pMB->pCurrentGroup;\n\tif (pMB->groupsStack.size() > 0) {\n\t\tpMB->pCurrentGroup = pMB->groupsStack.back();\n\t\tpMB->groupsStack.pop_back();\n\t}\n\telse\n\t\tpMB->pCurrentGroup = NULL;\n}\nint ModelBuilder1base::addVertex(ModelBuilder1base* pMB, float kx, float ky, float kz, float nx, float ny, float nz) {\n\tVertex01* pVX = new Vertex01();\n\tpMB->vertices.push_back(pVX);\n\tpVX->aPos[0] = kx;\n\tpVX->aPos[1] = ky;\n\tpVX->aPos[2] = kz;\n\t\/\/normal\n\tpVX->aNormal[0] = nx;\n\tpVX->aNormal[1] = ny;\n\tpVX->aNormal[2] = nz;\n\tpVX->subjN = pMB->usingSubjN;\n\tpVX->materialN = pMB->usingMaterialN;\n\treturn pMB->vertices.size() - 1;\n}\nint ModelBuilder1base::buildDrawJobs(ModelBuilder1base* pMB, std::vector<GameSubj*> gameSubjs) {\n\tint totalSubjsN = pMB->subjNumbersList.size();\n\tif (totalSubjsN < 1) {\n\t\tpMB->subjNumbersList.push_back(-1);\n\t\ttotalSubjsN = 1;\n\t}\n\tint totalMaterialsN = pMB->materialsList.size();\n\tif (totalSubjsN < 2 && totalMaterialsN < 2) {\n\t\t\/\/simple single DrawJob\n\t\tMaterial* pMT = pMB->materialsList.at(0);\n\t\tGameSubj* pGS = NULL;\n\t\tint gsN = pMB->subjNumbersList.at(0);\n\t\tif (gsN >= 0)\n\t\t\tpGS = gameSubjs.at(gsN);\n\t\tif (pGS != NULL)\n\t\t\tpGS->djStartN = DrawJob::drawJobs.size();\n\t\tbuildSingleDrawJob(pMT, pMB->vertices, pMB->triangles);\n\t\tif (pGS != NULL)\n\t\t\tpGS->djTotalN = DrawJob::drawJobs.size() - pGS->djStartN;\n\t\treturn 1;\n\t}\n\tint totalVertsN = pMB->vertices.size();\n\tint totalTrianglesN = pMB->triangles.size();\n\t\/\/clear flags\n\tfor (int vN = 0; vN < totalVertsN; vN++) {\n\t\tVertex01* pVX = pMB->vertices.at(vN);\n\t\tpVX->flag = 0;\n\t}\n\tfor (int tN = 0; tN < totalTrianglesN; tN++) {\n\t\tTriangle01* pTR = pMB->triangles.at(tN);\n\t\tpTR->flag = 0;\n\t}\n\tint addedDJs = 0;\n\tfor (int sN = 0; sN < totalSubjsN; sN++) {\n\t\tGameSubj* pGS = NULL;\n\t\tint gsN = pMB->subjNumbersList.at(sN);\n\t\tif (gsN >= 0)\n\t\t\tpGS = gameSubjs.at(gsN);\n\t\tif (pGS != NULL)\n\t\t\tpGS->djStartN = DrawJob::drawJobs.size();\n\t\tfor (int mtN = 0; mtN < totalMaterialsN; mtN++) {\n\t\t\tMaterial* pMT = pMB->materialsList.at(mtN);\n\t\t\tstd::vector<Vertex01*> useVertices;\n\t\t\tstd::vector<Triangle01*> useTriangles;\n\t\t\tfor (int vN = 0; vN < totalVertsN; vN++) {\n\t\t\t\tVertex01* pVX = pMB->vertices.at(vN);\n\t\t\t\tif (pVX->flag != 0)\n\t\t\t\t\tcontinue;\n\t\t\t\tif (pVX->subjN != gsN)\n\t\t\t\t\tcontinue;\n\t\t\t\tif (pVX->materialN != mtN)\n\t\t\t\t\tcontinue;\n\t\t\t\t\/\/if here - make a copy\n\t\t\t\tVertex01* pVX2 = new Vertex01(*pVX);\n\t\t\t\tuseVertices.push_back(pVX2);\n\t\t\t\tpVX2->altN = vN;\n\t\t\t\tpVX->flag = 1;\n\t\t\t\tif (pVX->endOfSequence > 0) {\n\t\t\t\t\trearrangeArraysForDrawJob(pMB, pMB->vertices, useVertices, useTriangles);\n\t\t\t\t\tbuildSingleDrawJob(pMT, useVertices, useTriangles);\n\t\t\t\t\taddedDJs++;\n\t\t\t\t\t\/\/clear and proceed to next sequence\n\t\t\t\t\tint useVerticesN = useVertices.size();\n\t\t\t\t\tfor (int i = 0; i < useVerticesN; i++)\n\t\t\t\t\t\tdelete useVertices.at(i);\n\t\t\t\t\tuseVertices.clear();\n\t\t\t\t}\n\t\t\t}\n\t\t\tint useVerticesN = useVertices.size();\n\t\t\tif (useVerticesN < 1)\n\t\t\t\tcontinue; \/\/to next material\n\t\t\t\/\/pick triangles\n\t\t\tfor (int tN = 0; tN < totalTrianglesN; tN++) {\n\t\t\t\tTriangle01* pTR = pMB->triangles.at(tN);\n\t\t\t\tif (pTR->flag != 0)\n\t\t\t\t\tcontinue;\n\t\t\t\tif (pTR->subjN != gsN)\n\t\t\t\t\tcontinue;\n\t\t\t\tif (pTR->materialN != mtN)\n\t\t\t\t\tcontinue;\n\t\t\t\t\/\/if here - make a copy\n\t\t\t\tTriangle01* pTR2 = new Triangle01(*pTR);\n\t\t\t\tuseTriangles.push_back(pTR2);\n\t\t\t\tpTR->flag = 1;\n\t\t\t}\n\t\t\trearrangeArraysForDrawJob(pMB, pMB->vertices, useVertices, useTriangles);\n\t\t\tbuildSingleDrawJob(pMT, useVertices, useTriangles);\n\t\t\taddedDJs++;\n\t\t\t\/\/clear all for next material\n\t\t\tfor (int i = 0; i < useVerticesN; i++)\n\t\t\t\tdelete useVertices.at(i);\n\t\t\tuseVertices.clear();\n\t\t\tint useTrianglesN = useTriangles.size();\n\t\t\tfor (int i = 0; i < useTrianglesN; i++)\n\t\t\t\tdelete useTriangles.at(i);\n\t\t\tuseTriangles.clear();\n\t\t}\n\t\tif (pGS != NULL)\n\t\t\tpGS->djTotalN = DrawJob::drawJobs.size() - pGS->djStartN;\n\t}\n\treturn addedDJs;\n}\nint ModelBuilder1base::buildSingleDrawJob(Material* pMT, std::vector<Vertex01*> useVertices, std::vector<Triangle01*> useTriangles) {\n\tint totalVertsN = useVertices.size();\n\tif (totalVertsN < 1)\n\t\treturn 1;\n\tDrawJob* pDJ = new DrawJob();\n\t\/\/copy material to DJ\n\tmemcpy(&pDJ->mt, pMT, sizeof(Material));\n\t\/\/calculate VBO element size (stride) and variables offsets in VBO\n\tint VBOid = DrawJob::newBufferId();\n\tint stride = 0;\n\tpDJ->setDesirableOffsets(&stride, pDJ->mt.shaderN, VBOid);\n\t\/\/create an array for VBO\n\tint bufferSize = totalVertsN * stride;\n\tfloat* vertsBuffer = new float[bufferSize];\n\t\/\/fill vertsBuffer\n\tShader* pSh = Shader::shaders.at(pDJ->mt.shaderN);\n\tint floatSize = sizeof(float);\n\tfor (int vN = 0; vN < totalVertsN; vN++) {\n\t\tVertex01* pVX = useVertices.at(vN);\n\t\tint idx = vN * stride \/ floatSize;\n\t\t\/\/pick data from vertex and move to the buffer\n\t\tmemcpy(&vertsBuffer[idx + pDJ->aPos.offset \/ floatSize], pVX->aPos, 3 * floatSize);\n\t\tif (pSh->l_aNormal >= 0) \/\/normal\n\t\t\tmemcpy(&vertsBuffer[idx + pDJ->aNormal.offset \/ floatSize], pVX->aNormal, 3 * floatSize);\n\t\tif (pSh->l_aTuv >= 0) \/\/attribute TUV (texture coordinates)\n\t\t\tmemcpy(&vertsBuffer[idx + pDJ->aTuv.offset \/ floatSize], pVX->aTuv, 2 * floatSize);\n\t\tif (pSh->l_aTuv2 >= 0) \/\/attribute TUV2 (normal maps)\n\t\t\tmemcpy(&vertsBuffer[idx + pDJ->aTuv2.offset \/ floatSize], pVX->aTuv2, 2 * floatSize);\n\t\tif (pSh->l_aTangent >= 0)\n\t\t\tmemcpy(&vertsBuffer[idx + pDJ->aTangent.offset \/ floatSize], pVX->aTangent, 3 * floatSize);\n\t\tif (pSh->l_aBinormal >= 0)\n\t\t\tmemcpy(&vertsBuffer[idx + pDJ->aBinormal.offset \/ floatSize], pVX->aBinormal, 3 * floatSize);\n\t}\n\t\/\/buffer is ready, create VBO\n\tglBindBuffer(GL_ARRAY_BUFFER, VBOid);\n\tglBufferData(GL_ARRAY_BUFFER, bufferSize * floatSize, vertsBuffer, GL_STATIC_DRAW);\n\tdelete[] vertsBuffer;\n\tpDJ->pointsN = totalVertsN;\n\n\tint totalTrianglesN = useTriangles.size();\n\tif (totalTrianglesN > 0) {\n\t\t\/\/create EBO\n\t\tint totalIndexesN = totalTrianglesN * 3;\n\t\t\/\/create buffer\n\t\tGLushort* indexBuffer = new GLushort[totalIndexesN];\n\t\tfor (int tN = 0; tN < totalTrianglesN; tN++) {\n\t\t\tTriangle01* pTR = useTriangles[tN];\n\t\t\tint idx = tN * 3;\n\t\t\tindexBuffer[idx + 0] = (GLushort)pTR->idx[0];\n\t\t\tindexBuffer[idx + 1] = (GLushort)pTR->idx[1];\n\t\t\tindexBuffer[idx + 2] = (GLushort)pTR->idx[2];\n\t\t}\n\t\t\/\/buffer is ready, create IBO\n\t\tpDJ->glEBOid = DrawJob::newBufferId();\n\t\tglBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pDJ->glEBOid);\n\t\tglBufferData(GL_ELEMENT_ARRAY_BUFFER, totalIndexesN * sizeof(GLushort), indexBuffer, GL_STATIC_DRAW);\n\t\tdelete[] indexBuffer;\n\t\tpDJ->pointsN = totalIndexesN;\n\t}\n\t\/\/create and fill vertex attributes array (VAO)\n\tpDJ->buildVAO();\n\treturn 1;\n}\nint ModelBuilder1base::rearrangeArraysForDrawJob(ModelBuilder1base* pMB, std::vector<Vertex01*> allVertices, std::vector<Vertex01*> useVertices, std::vector<Triangle01*> useTriangles) {\n\tint totalTrianglesN = useTriangles.size();\n\tif (totalTrianglesN < 1)\n\t\treturn 0;\n\tint totalVerticesN = useVertices.size();\n\t\/\/save new vertices order in original vertices array\n\t\/\/since triangles indices refer to original vertices order\n\tfor (int i = 0; i < totalVerticesN; i++) {\n\t\tVertex01* pVX1 = useVertices.at(i);\n\t\tVertex01* pVX0 = allVertices.at(pVX1->altN);\n\t\tpVX0->altN = i;\n\t}\n\t\/\/replace triangle original indices by new numbers saved in original vertices altN\n\tfor (int tN = 0; tN < totalTrianglesN; tN++) {\n\t\tTriangle01* pTR = useTriangles.at(tN);\n\t\tfor (int i = 0; i < 3; i++) {\n\t\t\tVertex01* pVX0 = allVertices.at(pTR->idx[i]);\n\t\t\tpTR->idx[i] = pVX0->altN;\n\t\t}\n\t}\n\treturn 1;\n}\n\nint ModelBuilder1base::moveGroupDg(ModelBuilder1base* pMB, float aX, float aY, float aZ, float kX, float kY, float kZ) {\n\t\/\/moves and rotates vertex group\n\t\/\/rotation angles are set in degrees\n\tmat4x4 transformMatrix = { 1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1 };\n\tmat4x4_translate(transformMatrix, kX, kY, kZ);\n\t\/\/rotation order: Z-X-Y\n\tif (aY != 0) mat4x4_rotate_Y(transformMatrix, transformMatrix, degrees2radians * aY);\n\tif (aX != 0) mat4x4_rotate_X(transformMatrix, transformMatrix, degrees2radians * aX);\n\tif (aZ != 0) mat4x4_rotate_Z(transformMatrix, transformMatrix, degrees2radians * aZ);\n\n\tint vertsN = pMB->vertices.size();\n\tfor (int i = pMB->pCurrentGroup->fromVertexN; i < vertsN; i++) {\n\t\tVertex01* pVX = pMB->vertices.at(i);\n\t\tmat4x4_mul_vec4plus(pVX->aPos, transformMatrix, pVX->aPos, 1);\n\t\tmat4x4_mul_vec4plus(pVX->aNormal, transformMatrix, pVX->aNormal, 0);\n\t}\n\treturn 1;\n}\n\n<\/pre><\/div>\n\n\n
\n\n\n\n![](\"https:\/\/writingagame.com\/img\/b01\/c20\/02.jpg\")
<\/p>\n\n\n\n![](\"https:\/\/writingagame.com\/img\/b01\/c20\/03.jpg\")
<\/p>\n\n\n\n\n#pragma once\n#include "ModelBuilder1base.h"\n\nclass ModelBuilder : public ModelBuilder1base\n{\npublic:\n\tvirtual ~ModelBuilder();\n\tstatic int buildFace(ModelBuilder* pMB, std::string applyTo, VirtualShape* pVS);\n\tstatic int buildBoxFace(ModelBuilder* pMB, std::string applyTo, VirtualShape* pVS);\n\tstatic int buildBoxFacePlain(ModelBuilder* pMB, std::string applyTo, VirtualShape* pVS);\n\tstatic int buildBoxFaceTank(ModelBuilder* pMB, std::string applyTo, VirtualShape* pVS);\n\tstatic int cylinderWrap(ModelBuilder* pMB, VirtualShape* pVS, float angleFrom, float angleTo);\n\tstatic int capWrap(ModelBuilder* pMB, VirtualShape* pVS, float angleFrom, float angleTo);\n};\n\n<\/pre><\/div>\n\n\n
\n\n\n\n\n#include "ModelBuilder.h"\n#include "platform.h"\n#include "utils.h"\n#include "DrawJob.h"\n#include "Shader.h"\n\nextern float degrees2radians;\n\nModelBuilder::~ModelBuilder() {\n}\n\nint ModelBuilder::buildFace(ModelBuilder* pMB, std::string applyTo, VirtualShape* pVS) {\n\tif (strstr(pVS->shapeType, "box") == pVS->shapeType)\n\t\treturn buildBoxFace(pMB, applyTo, pVS);\n\treturn -1;\n}\nint ModelBuilder::buildBoxFace(ModelBuilder* pMB, std::string applyTo, VirtualShape* pVS) {\n\t\/\/this code is for simple box\n\tVirtualShape vs; \/\/face VS, \n\tmat4x4 transformMatrix = { 1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1 };\n\tvs.sectionsR = pVS->sectionsR;\n\t\/\/rotate desirable side to face us. \n\tif (applyTo.find("front") == 0) {\n\t\t\/\/Side <front> is facing us as is.\n\t\tvs.whl[0] = pVS->whl[0];\n\t\tvs.whl[1] = pVS->whl[1];\n\t\tvs.sections[0] = pVS->sections[0];\n\t\tvs.sections[1] = pVS->sections[1];\n\t\t\/\/extensions\n\t\tvs.extF = pVS->extF;\n\t\tvs.extL = pVS->extL;\n\t\tvs.extR = pVS->extR;\n\t\tvs.extU = pVS->extU;\n\t\tvs.extD = pVS->extD;\n\t\t\/\/define how to move\/place generated face back to the VirtualShape\n\t\t\/\/just shift closer to us by length\/2\n\t\tmat4x4_translate(transformMatrix, 0, 0, pVS->whl[2] \/ 2);\n\t}\n\telse if (applyTo.find("back") == 0) {\n\t\tvs.whl[0] = pVS->whl[0];\n\t\tvs.whl[1] = pVS->whl[1];\n\t\tvs.sections[0] = pVS->sections[0];\n\t\tvs.sections[1] = pVS->sections[1];\n\t\t\/\/extensions\n\t\tvs.extF = pVS->extB;\n\t\tvs.extL = pVS->extR;\n\t\tvs.extR = pVS->extL;\n\t\tvs.extU = pVS->extU;\n\t\tvs.extD = pVS->extD;\n\t\t\/\/rotate 180 degrees around Y and shift farther from us by half-length\n\t\tmat4x4_translate(transformMatrix, 0, 0, -pVS->whl[2] \/ 2);\n\t\tmat4x4_rotate_Y(transformMatrix, transformMatrix, degrees2radians * 180);\n\t}\n\telse if (applyTo.find("left") == 0) {\n\t\tvs.whl[0] = pVS->whl[2]; \/\/width = original length\n\t\tvs.whl[1] = pVS->whl[1];\n\t\tvs.sections[0] = pVS->sections[2];\n\t\tvs.sections[1] = pVS->sections[1];\n\t\t\/\/extensions\n\t\tvs.extF = pVS->extL;\n\t\tvs.extL = pVS->extB;\n\t\tvs.extR = pVS->extF;\n\t\tvs.extU = pVS->extU;\n\t\tvs.extD = pVS->extD;\n\t\t\/\/rotate -90 degrees around Y (CW) and shift half-width to the left\n\t\tmat4x4_translate(transformMatrix, -pVS->whl[0] \/ 2, 0, 0);\n\t\tmat4x4_rotate_Y(transformMatrix, transformMatrix, -degrees2radians * 90);\n\t}\n\telse if (applyTo.find("right") == 0) {\n\t\tvs.whl[0] = pVS->whl[2]; \/\/width = original length\n\t\tvs.whl[1] = pVS->whl[1];\n\t\tvs.sections[0] = pVS->sections[2];\n\t\tvs.sections[1] = pVS->sections[1];\n\t\t\/\/extensions\n\t\tvs.extF = pVS->extR;\n\t\tvs.extL = pVS->extF;\n\t\tvs.extR = pVS->extB;\n\t\tvs.extU = pVS->extU;\n\t\tvs.extD = pVS->extD;\n\t\t\/\/rotate +90 degrees around Y (CCW) and shift half-width to the right\n\t\tmat4x4_translate(transformMatrix, pVS->whl[0] \/ 2, 0, 0);\n\t\tmat4x4_rotate_Y(transformMatrix, transformMatrix, degrees2radians * 90);\n\t}\n\telse if (applyTo.find("top") == 0) {\n\t\tvs.whl[0] = pVS->whl[0];\n\t\tvs.whl[1] = pVS->whl[2]; \/\/height = original length\n\t\tvs.sections[0] = pVS->sections[0];\n\t\tvs.sections[1] = pVS->sections[2];\n\t\t\/\/extensions\n\t\tvs.extF = pVS->extU;\n\t\tvs.extL = pVS->extR;\n\t\tvs.extR = pVS->extL;\n\t\tvs.extU = pVS->extF;\n\t\tvs.extD = pVS->extB;\n\t\t\/\/rotate -90 degrees around X (CW) and 180 around Y, and shift half-height up\n\t\tmat4x4_translate(transformMatrix, 0, pVS->whl[1] \/ 2, 0);\n\t\tmat4x4_rotate_Y(transformMatrix, transformMatrix, -degrees2radians * 180);\n\t\tmat4x4_rotate_X(transformMatrix, transformMatrix, -degrees2radians * 90);\n\t}\n\telse if (applyTo.find("bottom") == 0) {\n\t\tvs.whl[0] = pVS->whl[0];\n\t\tvs.whl[1] = pVS->whl[2]; \/\/height = original length\n\t\tvs.sections[0] = pVS->sections[0];\n\t\tvs.sections[1] = pVS->sections[2];\n\t\t\/\/extensions\n\t\tvs.extF = pVS->extD;\n\t\tvs.extL = pVS->extL;\n\t\tvs.extR = pVS->extR;\n\t\tvs.extU = pVS->extF;\n\t\tvs.extD = pVS->extB;\n\t\t\/\/rotate 90 around X (CCW) and shift half-height down\n\t\tmat4x4_translate(transformMatrix, 0, -pVS->whl[1] \/ 2, 0);\n\t\tmat4x4_rotate_X(transformMatrix, transformMatrix, degrees2radians * 90);\n\t}\n\tlockGroup(pMB);\n\t\/\/create vertices\n\tif (strstr(pVS->shapeType, "tank") != nullptr)\n\t\tbuildBoxFaceTank(pMB, applyTo, &vs);\n\telse\n\t\tbuildBoxFacePlain(pMB, applyTo, &vs);\n\n\t\/\/move face to it's place (apply transform matrix)\n\tint vertsN = pMB->vertices.size();\n\tfor (int i = pMB->pCurrentGroup->fromVertexN; i < vertsN; i++) {\n\t\tVertex01* pVX = pMB->vertices.at(i);\n\t\tmat4x4_mul_vec4plus(pVX->aPos, transformMatrix, pVX->aPos, 1);\n\t\tmat4x4_mul_vec4plus(pVX->aNormal, transformMatrix, pVX->aNormal, 0);\n\t}\n\treleaseGroup(pMB);\n\treturn 1;\n}\nint ModelBuilder::buildBoxFacePlain(ModelBuilder* pMB, std::string applyTo, VirtualShape* pVS) {\n\tif (pVS->whl[0] == 0 || pVS->whl[1] == 0)\n\t\treturn 0;\n\t\/\/create vertices\n\tint sectionsX = pVS->sections[0];\n\tint sectionsY = pVS->sections[1];\n\tint pointsX = sectionsX + 1;\n\tint pointsY = sectionsY + 1;\n\tfloat stepX = pVS->whl[0] \/ sectionsX;\n\tfloat stepY = pVS->whl[1] \/ sectionsY;\n\tfloat kY = pVS->whl[1] \/ 2;\n\tfor (int iy = 0; iy < pointsY; iy++) {\n\t\tfloat kX = -pVS->whl[0] \/ 2;\n\t\tfor (int ix = 0; ix < pointsX; ix++) {\n\t\t\tint nSE = addVertex(pMB, kX, kY, pVS->extF, 0, 0, 1); \/\/vertex number on south-east\n\t\t\tif (iy > 0 && ix > 0) {\n\t\t\t\t\/\/add 2 triangles\n\t\t\t\tint nSW = nSE - 1; \/\/vertex number south-west\n\t\t\t\tint nNE = nSE - pointsX; \/\/north-east\n\t\t\t\tint nNW = nSW - pointsX; \/\/north-west\n\t\t\t\tadd2triangles(pMB, nNW, nNE, nSW, nSE, iy + ix);\n\t\t\t}\n\t\t\tkX += stepX;\n\t\t}\n\t\tkY -= stepY;\n\t}\n\treturn 1;\n}\nint ModelBuilder::buildBoxFaceTank(ModelBuilder* pMB, std::string applyTo, VirtualShape* pVS) {\n\t\/\/for diamond effect - sectionsRad=1, don't merge normals\n\tbool drawMiddle = true;\n\t\/\/edges\n\tbool drawTop = false;\n\tbool drawBottom = false;\n\tbool drawLeft = false;\n\tbool drawRight = false;\n\t\/\/corners\n\tbool drawTopLeft = false;\n\tbool drawTopRight = false;\n\tbool drawBottomLeft = false;\n\tbool drawBottomRight = false;\n\tif (pVS->extF == 0 || applyTo.find(" all") != std::string::npos) {\n\t\tdrawTop = true;\n\t\tdrawBottom = true;\n\t\tdrawLeft = true;\n\t\tdrawRight = true;\n\t\tdrawTopLeft = true;\n\t\tdrawTopRight = true;\n\t\tdrawBottomLeft = true;\n\t\tdrawBottomRight = true;\n\t}\n\telse if (applyTo.find(" h") != std::string::npos) {\n\t\tdrawLeft = true;\n\t\tdrawRight = true;\n\t}\n\telse if (applyTo.find(" v") != std::string::npos) {\n\t\tdrawTop = true;\n\t\tdrawBottom = true;\n\t}\n\tif (applyTo.find(" no") != std::string::npos) {\n\t\tif (applyTo.find(" noM") != std::string::npos) {\n\t\t\t\/\/middle\n\t\t\tif (applyTo.find(" noMrow") != std::string::npos) {\n\t\t\t\tdrawMiddle = false;\n\t\t\t\tdrawLeft = false;\n\t\t\t\tdrawRight = false;\n\t\t\t}\n\t\t\tif (applyTo.find(" noMcol") != std::string::npos) {\n\t\t\t\tdrawMiddle = false;\n\t\t\t\tdrawTop = false;\n\t\t\t\tdrawBottom = false;\n\t\t\t}\n\t\t\tif (applyTo.find(" noMid") != std::string::npos)\n\t\t\t\tdrawMiddle = false;\n\t\t}\n\t\tif (applyTo.find(" noN") != std::string::npos) {\n\t\t\t\/\/north\n\t\t\tif (applyTo.find(" noNrow") != std::string::npos) {\n\t\t\t\tdrawTop = false;\n\t\t\t\tdrawTopLeft = false;\n\t\t\t\tdrawTopRight = false;\n\t\t\t}\n\t\t\tif (applyTo.find(" noNedge") != std::string::npos)\n\t\t\t\tdrawTop = false;\n\t\t\tif (applyTo.find(" noNW") != std::string::npos)\n\t\t\t\tdrawTopLeft = false;\n\t\t\tif (applyTo.find(" noNE") != std::string::npos)\n\t\t\t\tdrawTopRight = false;\n\t\t}\n\t\tif (applyTo.find(" noS") != std::string::npos) {\n\t\t\t\/\/south\n\t\t\tif (applyTo.find(" noSrow") != std::string::npos) {\n\t\t\t\tdrawBottom = false;\n\t\t\t\tdrawBottomLeft = false;\n\t\t\t\tdrawBottomRight = false;\n\t\t\t}\n\t\t\tif (applyTo.find(" noSedge") != std::string::npos)\n\t\t\t\tdrawBottom = false;\n\t\t\tif (applyTo.find(" noSW") != std::string::npos)\n\t\t\t\tdrawBottomLeft = false;\n\t\t\tif (applyTo.find(" noSE") != std::string::npos)\n\t\t\t\tdrawBottomRight = false;\n\t\t}\n\t\tif (applyTo.find(" noW") != std::string::npos) {\n\t\t\t\/\/west\n\t\t\tif (applyTo.find(" noWcol") != std::string::npos) {\n\t\t\t\tdrawLeft = false;\n\t\t\t\tdrawTopLeft = false;\n\t\t\t\tdrawBottomLeft = false;\n\t\t\t}\n\t\t\tif (applyTo.find(" noWedge") != std::string::npos)\n\t\t\t\tdrawLeft = false;\n\t\t}\n\t\tif (applyTo.find(" noE") != std::string::npos) {\n\t\t\t\/\/east\n\t\t\tif (applyTo.find(" noEcol") != std::string::npos) {\n\t\t\t\tdrawRight = false;\n\t\t\t\tdrawTopRight = false;\n\t\t\t\tdrawBottomRight = false;\n\t\t\t}\n\t\t\tif (applyTo.find(" noEedge") != std::string::npos)\n\t\t\t\tdrawRight = false;\n\t\t}\n\t}\n\tlockGroup(pMB);\n\t\/\/middle\n\tif (pVS->whl[0] > 0 && pVS->whl[1] > 0 && drawMiddle) {\n\t\tbuildBoxFacePlain(pMB, applyTo, pVS);\n\t}\n\tVirtualShape vs;\n\t\/\/edges\n\t\/\/vs.type.assign("cylinder");\n\tvs.sectionsR = pVS->sectionsR;\n\tif (pVS->whl[0] > 0) {\n\t\tvs.sections[2] = pVS->sections[0]; \/\/cylinder Z sections n\n\t\tvs.whl[2] = pVS->whl[0]; \/\/cylinder length Z\n\t\tvs.whl[0] = pVS->extF * 2; \/\/cylinder diameter X\n\t\tif (pVS->extU > 0 && drawTop) {\n\t\t\tvs.whl[1] = pVS->extU * 2; \/\/cylinder diameter Y\n\t\t\tlockGroup(pMB);\n\t\t\tcylinderWrap(pMB, &vs, 0, 90);\n\t\t\t\/\/rotate -90 degrees around Y and shift up\n\t\t\tmoveGroupDg(pMB, 0, -90, 0, 0, pVS->whl[1] * 0.5f, 0);\n\t\t\treleaseGroup(pMB);\n\t\t}\n\t\tif (pVS->extD > 0 && drawBottom) {\n\t\t\tvs.whl[1] = pVS->extD * 2; \/\/cylinder diameter Y\n\t\t\tlockGroup(pMB);\n\t\t\tcylinderWrap(pMB, &vs, -90, 0);\n\t\t\t\/\/rotate -90 degrees around Y and shift down\n\t\t\tmoveGroupDg(pMB, 0, -90, 0, 0, -pVS->whl[1] * 0.5f, 0);\n\t\t\treleaseGroup(pMB);\n\t\t}\n\t}\n\tif (pVS->whl[1] > 0) {\n\t\tvs.sections[2] = pVS->sections[1]; \/\/cylinder Z sections n\n\t\tvs.whl[2] = pVS->whl[1]; \/\/cylinder length Z\n\t\tvs.whl[1] = pVS->extF * 2; \/\/cylinder diameter Y\n\t\tif (pVS->extL > 0 && drawLeft) {\n\t\t\tvs.whl[0] = pVS->extL * 2; \/\/cylinder diameter X\n\t\t\tlockGroup(pMB);\n\t\t\tcylinderWrap(pMB, &vs, 90, 180);\n\t\t\t\/\/rotate 90 degrees around Y and shift left\n\t\t\tmoveGroupDg(pMB, 90, 0, 0, -pVS->whl[0] * 0.5f, 0, 0);\n\t\t\treleaseGroup(pMB);\n\t\t}\n\t\tif (pVS->extR > 0 && drawRight) {\n\t\t\tvs.whl[0] = pVS->extR * 2; \/\/cylinder diameter X\n\t\t\tlockGroup(pMB);\n\t\t\tcylinderWrap(pMB, &vs, 0, 90);\n\t\t\t\/\/rotate 90 degrees around Y and shift left\n\t\t\tmoveGroupDg(pMB, 90, 0, 0, pVS->whl[0] * 0.5f, 0, 0);\n\t\t\treleaseGroup(pMB);\n\t\t}\n\t}\n\t\/\/corners\n\t\/\/vs.type.assign("cap");\n\tvs.sectionsR = pVS->sectionsR;\n\tvs.sections[2] = pVS->sectionsR;\n\tvs.whl[2] = pVS->extF;\n\tif (pVS->extU > 0) {\n\t\t\/\/top corners\n\t\tvs.whl[1] = pVS->extU * 2;\n\t\tif (pVS->extL > 0 && drawTopLeft) {\n\t\t\tvs.whl[0] = pVS->extL * 2;\n\t\t\tlockGroup(pMB);\n\t\t\tcapWrap(pMB, &vs, 90, 180);\n\t\t\t\/\/rotate 90 degrees around Y and shift left\n\t\t\tmoveGroupDg(pMB, 0, 0, 0, -pVS->whl[0] * 0.5f, pVS->whl[1] * 0.5f, 0);\n\t\t\treleaseGroup(pMB);\n\t\t}\n\t\tif (pVS->extR > 0 && drawTopRight) {\n\t\t\tvs.whl[0] = pVS->extR * 2;\n\t\t\tlockGroup(pMB);\n\t\t\tcapWrap(pMB, &vs, 0, 90);\n\t\t\t\/\/rotate 90 degrees around Y and shift left\n\t\t\tmoveGroupDg(pMB, 0, 0, 0, pVS->whl[0] * 0.5f, pVS->whl[1] * 0.5f, 0);\n\t\t\treleaseGroup(pMB);\n\n\t\t}\n\t}\n\tif (pVS->extD > 0) {\n\t\t\/\/bottom corners\n\t\tvs.whl[1] = pVS->extD * 2;\n\t\tif (pVS->extL > 0 && drawBottomLeft) {\n\t\t\tvs.whl[0] = pVS->extL * 2;\n\t\t\tlockGroup(pMB);\n\t\t\tcapWrap(pMB, &vs, -180, -90);\n\t\t\t\/\/rotate 90 degrees around Y and shift left\n\t\t\tmoveGroupDg(pMB, 0, 0, 0, -pVS->whl[0] * 0.5f, -pVS->whl[1] * 0.5f, 0);\n\t\t\treleaseGroup(pMB);\n\t\t}\n\t\tif (pVS->extR > 0 && drawBottomRight) {\n\t\t\tvs.whl[0] = pVS->extR * 2;\n\t\t\tlockGroup(pMB);\n\t\t\tcapWrap(pMB, &vs, -90, 0);\n\t\t\t\/\/rotate 90 degrees around Y and shift left\n\t\t\tmoveGroupDg(pMB, 0, 0, 0, pVS->whl[0] * 0.5f, -pVS->whl[1] * 0.5f, 0);\n\t\t\treleaseGroup(pMB);\n\t\t}\n\t}\n\tif (pVS->extF == 0) {\n\t\tint vertsN = pMB->vertices.size();\n\t\tfor (int i = pMB->pCurrentGroup->fromVertexN; i < vertsN; i++) {\n\t\t\tVertex01* pVX = pMB->vertices.at(i);\n\t\t\t\/\/normal\n\t\t\tv3set(pVX->aNormal, 0, 0, 1);\n\t\t}\n\t}\n\treleaseGroup(pMB);\n\treturn 1;\n}\n\nint ModelBuilder::cylinderWrap(ModelBuilder* pMB, VirtualShape* pVS, float angleFrom, float angleTo) {\n\t\/\/ angleFrom\/To - in degrees\n\tlockGroup(pMB);\n\tfloat stepZ = pVS->whl[2] \/ pVS->sections[2];\n\tfloat stepDg = (angleTo - angleFrom) \/ pVS->sectionsR; \/\/in degrees\n\tfor (int nz = 0; nz <= pVS->sections[2]; nz++) {\n\t\tfloat kz = stepZ * nz - pVS->whl[2] * 0.5f;\n\t\tfor (int rpn = 0; rpn <= pVS->sectionsR; rpn++) {\n\t\t\t\/\/ rpn - radial point number\n\t\t\tfloat angleRd = (angleFrom + stepDg * rpn) * degrees2radians;\n\t\t\tfloat kx = cosf(angleRd);\n\t\t\tfloat ky = sinf(angleRd);\n\t\t\tint nSE = addVertex(pMB, kx, ky, kz, kx, ky, 0);\n\t\t\tif (nz > 0 && rpn > 0) {\n\t\t\t\tint nSW = nSE - 1;\n\t\t\t\tint nNW = nSW - pVS->sectionsR - 1;\n\t\t\t\tint nNE = nSE - pVS->sectionsR - 1;\n\t\t\t\tadd2triangles(pMB, nNE, nNW, nSE, nSW, nz + rpn);\n\t\t\t}\n\t\t}\n\t}\n\t\/\/scale to desirable diameters\n\tmat4x4 transformMatrix = { 1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1 };\n\tmat4x4_scale_aniso(transformMatrix, transformMatrix, pVS->whl[0] * 0.5f, pVS->whl[1] * 0.5f, 1);\n\tint vertsN = pMB->vertices.size();\n\tfor (int i = pMB->pCurrentGroup->fromVertexN; i < vertsN; i++) {\n\t\tVertex01* pVX = pMB->vertices.at(i);\n\t\tmat4x4_mul_vec4plus(pVX->aPos, transformMatrix, pVX->aPos, 1);\n\t}\n\treleaseGroup(pMB);\n\treturn 1;\n}\nint ModelBuilder::capWrap(ModelBuilder* pMB, VirtualShape* pVS, float angleFrom, float angleTo) {\n\t\/\/ angleFrom\/To - in degrees\n\tlockGroup(pMB);\n\t\/\/center point\n\tint n0 = addVertex(pMB, 0, 0, 1, 0, 0, 1);\n\tfloat stepZdg = 90.0f \/ pVS->sections[2]; \/\/in degrees\n\tfloat stepRdg = (angleTo - angleFrom) \/ pVS->sectionsR; \/\/in degrees\n\tfor (int nz = 1; nz <= pVS->sections[2]; nz++) {\n\t\tfloat angleZrd = stepZdg * nz * degrees2radians;\n\t\tfloat kz = cosf(angleZrd);\n\t\tfloat R = sinf(angleZrd);\n\t\tfor (int rpn = 0; rpn <= pVS->sectionsR; rpn++) {\n\t\t\t\/\/ rpn - radial point number\n\t\t\tfloat angleRd = (angleFrom + stepRdg * rpn) * degrees2radians;\n\t\t\tfloat kx = cosf(angleRd) * R;\n\t\t\tfloat ky = sinf(angleRd) * R;\n\t\t\tint nSE = addVertex(pMB, kx, ky, kz, kx, ky, kz);\n\t\t\tif (rpn > 0) {\n\t\t\t\tif (nz == 1) {\n\t\t\t\t\tint nSW = nSE - 1;\n\t\t\t\t\taddTriangle(pMB, n0, nSW, nSE);\n\t\t\t\t}\n\t\t\t\telse {\n\t\t\t\t\tint nSW = nSE - 1;\n\t\t\t\t\tint nNW = nSW - pVS->sectionsR - 1;\n\t\t\t\t\tint nNE = nSE - pVS->sectionsR - 1;\n\t\t\t\t\tadd2triangles(pMB, nNW, nNE, nSW, nSE, nz + rpn);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\t\/\/scale to desirable diameters\n\tmat4x4 transformMatrix = { 1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1 };\n\tmat4x4_scale_aniso(transformMatrix, transformMatrix, pVS->whl[0] * 0.5f, pVS->whl[1] * 0.5f, pVS->whl[2]);\n\tint vertsN = pMB->vertices.size();\n\tfor (int i = pMB->pCurrentGroup->fromVertexN; i < vertsN; i++) {\n\t\tVertex01* pVX = pMB->vertices.at(i);\n\t\tmat4x4_mul_vec4plus(pVX->aPos, transformMatrix, pVX->aPos, 1);\n\t}\n\treleaseGroup(pMB);\n\treturn 1;\n}\n\n<\/pre><\/div>\n\n\n
\n\n\n\n\n#include "TheGame.h"\n#include "platform.h"\n#include "utils.h"\n#include "linmath.h"\n#include "Texture.h"\n#include "Shader.h"\n#include "DrawJob.h"\n#include "ModelBuilder.h"\n\nextern std::string filesRoot;\n\nstd::vector<GameSubj*> TheGame::gameSubjs;\n\nint TheGame::getReady() {\n bExitGame = false;\n Shader::loadShaders();\n glEnable(GL_CULL_FACE);\n\n \/\/=== create box ========================\n GameSubj* pGS = new GameSubj();\n gameSubjs.push_back(pGS);\n\n pGS->name.assign("box1");\n pGS->ownCoords.setPosition(0, 0, 0);\n pGS->ownCoords.setDegrees(0, 0, 0);\n pGS->ownSpeed.setDegrees(0,1,0);\n\n ModelBuilder* pMB = new ModelBuilder();\n pMB->useSubjN(gameSubjs.size() - 1);\n\n \/\/define VirtualShape\n VirtualShape vs;\n vs.setShapeType("box-tank");\n vs.whl[0] = 60;\n vs.whl[1] = 160;\n vs.whl[2] = 390;\n vs.setExt(20);\n vs.extD = 0;\n vs.extF = 0; \/\/to make front face "flat"\n vs.sectionsR = 2;\n\n Material mt;\n \/\/define material - flat red\n mt.shaderN = Shader::spN_phong_ucolor;\n mt.primitiveType = GL_TRIANGLES;\n mt.uColor.setRGBA(255, 0, 0,255); \/\/red\n pMB->useMaterial(&mt);\n\n pMB->buildBoxFace(pMB,"front v", &vs);\n pMB->buildBoxFace(pMB, "back v", &vs);\n pMB->buildBoxFace(pMB, "top", &vs);\n pMB->buildBoxFace(pMB, "bottom", &vs);\n pMB->buildBoxFace(pMB, "left all", &vs);\n mt.uColor.setRGBA(0, 0, 255,255); pMB->useMaterial(&mt); \/\/blue\n pMB->buildBoxFace(pMB, "right all", &vs);\n\n pMB->buildDrawJobs(gameSubjs);\n\n delete pMB;\n\n \/\/===== set up camera\n v3set(mainCamera.ownCoords.pos, 0, 200, 1000); \/\/set position\n float cameraDir[3];\n v3set(cameraDir, 0, -200, -1000); \/\/set direction vector\n float cameraYawDg = v3yawDg(cameraDir);\n float cameraPitchDg = v3pitchDg(cameraDir);\n \/\/mylog("cameraYaw=%f, cameraPitch=%f\\n", cameraYawDg, cameraPitchDg);\n\n mainCamera.ownCoords.setDegrees(cameraPitchDg, cameraYawDg, 0);\n float cameraUp[4] = { 0,1,0,0 }; \/\/y - up\n mat4x4_mul_vec4plus(cameraUp, *mainCamera.ownCoords.getRotationMatrix(), cameraUp, 0);\n\n mat4x4_look_at(mainCamera.lookAtMatrix, mainCamera.ownCoords.pos, pGS->ownCoords.pos, cameraUp);\n\n \/\/===== set up light\n v3set(dirToMainLight, -1, 1, 1);\n vec3_norm(dirToMainLight, dirToMainLight);\n\n return 1;\n}\nint TheGame::drawFrame() {\n myPollEvents();\n\n \/\/glClearColor(0.0, 0.0, 0.5, 1.0);\n glClear(GL_COLOR_BUFFER_BIT);\n\n \/\/calculate halfVector\n float dirToCamera[4] = { 0,0,-1,0 }; \/\/-z\n mat4x4_mul_vec4plus(dirToCamera, *mainCamera.ownCoords.getRotationMatrix(), dirToCamera, 0);\n\n float uHalfVector[4] = { 0,0,0,0 };\n for (int i = 0; i < 3; i++)\n uHalfVector[i] = (dirToCamera[i] + dirToMainLight[i]) \/ 2;\n vec3_norm(uHalfVector, uHalfVector);\n\n mat4x4 mProjection, mViewProjection, mMVP, mMV4x4;\n \/\/mat4x4_ortho(mProjection, -(float)screenSize[0] \/ 2, (float)screenSize[0] \/ 2, -(float)screenSize[1] \/ 2, (float)screenSize[1] \/ 2, 100.f, 500.f);\n mat4x4_perspective(mProjection, 3.14f \/ 6.0f, (float)screenSize[0] \/ screenSize[1], 700.f, 1300.f);\n mat4x4_mul(mViewProjection, mProjection, mainCamera.lookAtMatrix);\n \/\/mViewProjection[1][3] = 0; \/\/keystone effect\n\n \/\/scan subjects\n int subjsN = gameSubjs.size();\n for (int subjN = 0; subjN < subjsN; subjN++) {\n GameSubj* pGS = gameSubjs.at(subjN);\n \/\/behavior - apply rotation speed\n pGS->moveSubj();\n \/\/prepare subject for rendering\n pGS->buildModelMatrix(pGS);\n \/\/build MVP matrix for given subject\n mat4x4_mul(mMVP, mViewProjection, pGS->ownModelMatrix);\n \/\/build Model-View (rotation) matrix for normals\n mat4x4_mul(mMV4x4, mainCamera.lookAtMatrix, (vec4*)pGS->ownCoords.getRotationMatrix());\n \/\/convert to 3x3 matrix\n float mMV3x3[3][3];\n for (int y = 0; y < 3; y++)\n for (int x = 0; x < 3; x++)\n mMV3x3[y][x] = mMV4x4[y][x];\n \/\/render subject\n for (int i = 0; i < pGS->djTotalN; i++) {\n DrawJob* pDJ = DrawJob::drawJobs.at(pGS->djStartN + i);\n pDJ->execute((float*)mMVP, *mMV3x3, dirToMainLight, uHalfVector, NULL);\n }\n }\n mySwapBuffers();\n return 1;\n}\n\nint TheGame::cleanUp() {\n int itemsN = gameSubjs.size();\n \/\/delete all UISubjs\n for (int i = 0; i < itemsN; i++) {\n GameSubj* pGS = gameSubjs.at(i);\n delete pGS;\n }\n gameSubjs.clear();\n \/\/clear all other classes\n Texture::cleanUp();\n Shader::cleanUp();\n DrawJob::cleanUp();\n return 1;\n}\nint TheGame::onScreenResize(int width, int height) {\n if (screenSize[0] == width && screenSize[1] == height)\n return 0;\n screenSize[0] = width;\n screenSize[1] = height;\n screenRatio = (float)width \/ (float)height;\n glViewport(0, 0, width, height);\n mylog(" screen size %d x %d\\n", width, height);\n return 1;\n}\nint TheGame::run() {\n getReady();\n while (!bExitGame) {\n drawFrame();\n }\n cleanUp();\n return 1;\n}\n\n<\/pre><\/div>\n\n\n![](\"https:\/\/writingagame.com\/img\/b01\/c20\/04.jpg\")
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