186 lines
7.2 KiB
C++
186 lines
7.2 KiB
C++
//
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// KRMaterialManager.cpp
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// gldemo
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//
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// Created by Kearwood Gilbert on 10-10-24.
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// Copyright (c) 2010 Kearwood Software. All rights reserved.
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//
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#include "KRMaterialManager.h"
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#import <stdint.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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KRMaterialManager::KRMaterialManager(KRTextureManager *pTextureManager) {
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m_pTextureManager = pTextureManager;
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}
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KRMaterialManager::~KRMaterialManager() {
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}
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KRMaterial *KRMaterialManager::getMaterial(const char *szName) {
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map<std::string, KRMaterial *>::iterator itr = m_materials.find(szName);
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if(itr == m_materials.end()) {
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// Not found
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return NULL;
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} else {
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return (*itr).second;
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}
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}
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bool KRMaterialManager::loadFile(const char *szPath) {
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bool bSuccess = false;
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int fdFile = 0;
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int fileSize = 0;
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void *pFile = NULL;
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KRMaterial *pMaterial = NULL;
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char szSymbol[16][64];
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struct stat statbuf;
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fdFile = open(szPath, O_RDONLY);
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if(fdFile >= 0) {
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if(fstat(fdFile, &statbuf) >= 0) {
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if ((pFile = mmap (0, statbuf.st_size, PROT_READ, MAP_SHARED, fdFile, 0)) == (caddr_t) -1) {
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} else {
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fileSize = statbuf.st_size;
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char *pScan = (char *)pFile;
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char *pEnd = (char *)pFile + fileSize;
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while(pScan < pEnd) {
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// Scan through whitespace
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while(pScan < pEnd && (*pScan == ' ' || *pScan == '\t' || *pScan == '\r' || *pScan == '\n')) {
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pScan++;
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}
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if(*pScan == '#') {
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// Line is a comment line
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// Scan to the end of the line
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while(pScan < pEnd && *pScan != '\r' && *pScan != '\n') {
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pScan++;
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}
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} else {
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int cSymbols = 0;
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while(pScan < pEnd && *pScan != '\n' && *pScan != '\r') {
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char *pDest = szSymbol[cSymbols++];
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while(pScan < pEnd && *pScan != ' ' && *pScan != '\n' && *pScan != '\r') {
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*pDest++ = *pScan++;
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}
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*pDest = '\0';
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// Scan through whitespace, but don't advance to next line
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while(pScan < pEnd && (*pScan == ' ' || *pScan == '\t')) {
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pScan++;
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}
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}
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if(strcmp(szSymbol[0], "newmtl") == 0 && cSymbols >= 2) {
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pMaterial = new KRMaterial();
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m_materials[szSymbol[1]] = pMaterial;
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} if(pMaterial != NULL) {
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if(strcmp(szSymbol[0], "Ka") == 0) {
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char *pScan2 = szSymbol[1];
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double r = strtof(pScan2, &pScan2);
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if(cSymbols == 2) {
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pMaterial->setAmbient(r, r, r);
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} else if(cSymbols == 4) {
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pScan2 = szSymbol[2];
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double g = strtof(pScan2, &pScan2);
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pScan2 = szSymbol[3];
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double b = strtof(pScan2, &pScan2);
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pMaterial->setAmbient(r, g, b);
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}
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} else if(strcmp(szSymbol[0], "Kd") == 0) {
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char *pScan2 = szSymbol[1];
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double r = strtof(pScan2, &pScan2);
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if(cSymbols == 2) {
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pMaterial->setDiffuse(r, r, r);
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} else if(cSymbols == 4) {
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pScan2 = szSymbol[2];
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double g = strtof(pScan2, &pScan2);
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pScan2 = szSymbol[3];
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double b = strtof(pScan2, &pScan2);
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pMaterial->setDiffuse(r, g, b);
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}
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} else if(strcmp(szSymbol[0], "Ks") == 0) {
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char *pScan2 = szSymbol[1];
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double r = strtof(pScan2, &pScan2);
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if(cSymbols == 2) {
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pMaterial->setSpecular(r, r, r);
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} else if(cSymbols == 4) {
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pScan2 = szSymbol[2];
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double g = strtof(pScan2, &pScan2);
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pScan2 = szSymbol[3];
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double b = strtof(pScan2, &pScan2);
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pMaterial->setSpecular(r, g, b);
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}
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} else if(strncmp(szSymbol[0], "map", 3) == 0) {
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// Truncate file extension
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char *pScan2 = szSymbol[1];
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char *pLastPeriod = NULL;
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while(*pScan2 != '\0') {
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if(*pScan2 == '.') {
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pLastPeriod = pScan2;
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}
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pScan2++;
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}
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if(pLastPeriod) {
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*pLastPeriod = '\0';
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}
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KRTexture *pTexture = m_pTextureManager->getTexture(szSymbol[1]);
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if(pTexture) {
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if(strcmp(szSymbol[0], "map_Ka") == 0) {
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pMaterial->setAmbientMap(pTexture);
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} else if(strcmp(szSymbol[0], "map_Kd") == 0) {
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pMaterial->setDiffuseMap(pTexture);
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} else if(strcmp(szSymbol[0], "map_Ks") == 0) {
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pMaterial->setSpecularMap(pTexture);
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} else if(strcmp(szSymbol[0], "map_Normal") == 0) {
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pMaterial->setNormalMap(pTexture);
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}
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}
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}
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}
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}
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}
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bSuccess = true;
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}
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}
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}
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if(pFile != NULL) {
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munmap(pFile, fileSize);
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}
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if(fdFile != 0) {
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close(fdFile);
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}
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/*
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KRMaterial *pMaterial = new KRMaterial();
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if(!pMaterial->loadFromFile(szPath)) {
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delete pMaterial;
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return NULL;
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}
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m_materials[szName] = pMaterial;
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*/
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return bSuccess;
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}
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