749 lines
20 KiB
C++
749 lines
20 KiB
C++
//
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// Simple .obj viewer(vertex only)
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//
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#include <vector>
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#include <string>
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#include <cstdio>
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#include <cstdlib>
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#include <iostream>
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#include <limits>
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#include <cmath>
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#include <cassert>
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#include <cstring>
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#include <algorithm>
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#if defined(ENABLE_ZLIB)
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#include <zlib.h>
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#endif
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#if defined(ENABLE_ZSTD)
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#include <zstd.h>
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#endif
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#include <GL/glew.h>
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#ifdef __APPLE__
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#include <OpenGL/glu.h>
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#else
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#include <GL/glu.h>
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#endif
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#include <GLFW/glfw3.h>
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#include "trackball.h"
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#define TINYOBJ_LOADER_OPT_IMPLEMENTATION
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#include "tinyobj_loader_opt.h"
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typedef struct {
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GLuint vb; // vertex buffer
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int numTriangles;
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} DrawObject;
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std::vector<DrawObject> gDrawObjects;
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int width = 768;
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int height = 768;
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double prevMouseX, prevMouseY;
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bool mouseLeftPressed;
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bool mouseMiddlePressed;
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bool mouseRightPressed;
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float curr_quat[4];
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float prev_quat[4];
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float eye[3], lookat[3], up[3];
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GLFWwindow* window;
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void CheckErrors(std::string desc) {
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GLenum e = glGetError();
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if (e != GL_NO_ERROR) {
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fprintf(stderr, "OpenGL error in \"%s\": %d (%d)\n", desc.c_str(), e, e);
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exit(20);
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}
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}
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void CalcNormal(float N[3], float v0[3], float v1[3], float v2[3]) {
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float v10[3];
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v10[0] = v1[0] - v0[0];
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v10[1] = v1[1] - v0[1];
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v10[2] = v1[2] - v0[2];
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float v20[3];
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v20[0] = v2[0] - v0[0];
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v20[1] = v2[1] - v0[1];
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v20[2] = v2[2] - v0[2];
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N[0] = v20[1] * v10[2] - v20[2] * v10[1];
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N[1] = v20[2] * v10[0] - v20[0] * v10[2];
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N[2] = v20[0] * v10[1] - v20[1] * v10[0];
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float len2 = N[0] * N[0] + N[1] * N[1] + N[2] * N[2];
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if (len2 > 0.0f) {
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float len = sqrtf(len2);
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N[0] /= len;
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N[1] /= len;
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}
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}
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const char *mmap_file(size_t *len, const char* filename)
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{
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(*len) = 0;
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#ifdef _WIN32
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HANDLE file = CreateFileA(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, NULL);
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assert(file != INVALID_HANDLE_VALUE);
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HANDLE fileMapping = CreateFileMapping(file, NULL, PAGE_READONLY, 0, 0, NULL);
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assert(fileMapping != INVALID_HANDLE_VALUE);
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LPVOID fileMapView = MapViewOfFile(fileMapping, FILE_MAP_READ, 0, 0, 0);
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auto fileMapViewChar = (const char*)fileMapView;
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assert(fileMapView != NULL);
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LARGE_INTEGER fileSize;
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fileSize.QuadPart = 0;
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GetFileSizeEx(file, &fileSize);
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(*len) = static_cast<size_t>(fileSize.QuadPart);
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return fileMapViewChar;
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#else
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FILE* f = fopen(filename, "rb" );
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if (!f) {
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fprintf(stderr, "Failed to open file : %s\n", filename);
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return nullptr;
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}
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fseek(f, 0, SEEK_END);
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long fileSize = ftell(f);
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fclose(f);
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if (fileSize < 16) {
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fprintf(stderr, "Empty or invalid .obj : %s\n", filename);
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return nullptr;
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}
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struct stat sb;
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char *p;
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int fd;
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fd = open (filename, O_RDONLY);
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if (fd == -1) {
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perror ("open");
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return nullptr;
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}
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if (fstat (fd, &sb) == -1) {
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perror ("fstat");
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return nullptr;
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}
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if (!S_ISREG (sb.st_mode)) {
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fprintf (stderr, "%s is not a file\n", "lineitem.tbl");
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return nullptr;
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}
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p = (char*)mmap (0, fileSize, PROT_READ, MAP_SHARED, fd, 0);
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if (p == MAP_FAILED) {
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perror ("mmap");
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return nullptr;
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}
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if (close (fd) == -1) {
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perror ("close");
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return nullptr;
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}
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(*len) = fileSize;
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return p;
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#endif
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}
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bool gz_load(std::vector<char>* buf, const char* filename)
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{
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#ifdef ENABLE_ZLIB
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gzFile file;
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file = gzopen (filename, "r");
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if (! file) {
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fprintf (stderr, "gzopen of '%s' failed: %s.\n", filename,
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strerror (errno));
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exit (EXIT_FAILURE);
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return false;
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}
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while (1) {
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int err;
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int bytes_read;
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unsigned char buffer[1024];
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bytes_read = gzread (file, buffer, 1024);
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buf->insert(buf->end(), buffer, buffer + 1024);
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//printf ("%s", buffer);
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if (bytes_read < 1024) {
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if (gzeof (file)) {
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break;
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}
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else {
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const char * error_string;
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error_string = gzerror (file, & err);
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if (err) {
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fprintf (stderr, "Error: %s.\n", error_string);
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exit (EXIT_FAILURE);
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return false;
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}
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}
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}
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}
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gzclose (file);
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return true;
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#else
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return false;
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#endif
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}
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#ifdef ENABLE_ZSTD
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static off_t fsize_X(const char *filename)
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{
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struct stat st;
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if (stat(filename, &st) == 0) return st.st_size;
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/* error */
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printf("stat: %s : %s \n", filename, strerror(errno));
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exit(1);
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}
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static FILE* fopen_X(const char *filename, const char *instruction)
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{
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FILE* const inFile = fopen(filename, instruction);
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if (inFile) return inFile;
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/* error */
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printf("fopen: %s : %s \n", filename, strerror(errno));
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exit(2);
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}
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static void* malloc_X(size_t size)
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{
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void* const buff = malloc(size);
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if (buff) return buff;
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/* error */
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printf("malloc: %s \n", strerror(errno));
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exit(3);
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}
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#endif
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bool zstd_load(std::vector<char>* buf, const char* filename)
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{
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#ifdef ENABLE_ZSTD
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off_t const buffSize = fsize_X(filename);
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FILE* const inFile = fopen_X(filename, "rb");
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void* const buffer = malloc_X(buffSize);
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size_t const readSize = fread(buffer, 1, buffSize, inFile);
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if (readSize != (size_t)buffSize) {
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printf("fread: %s : %s \n", filename, strerror(errno));
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exit(4);
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}
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fclose(inFile);
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unsigned long long const rSize = ZSTD_getDecompressedSize(buffer, buffSize);
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if (rSize==0) {
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printf("%s : original size unknown \n", filename);
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exit(5);
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}
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buf->resize(rSize);
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size_t const dSize = ZSTD_decompress(buf->data(), rSize, buffer, buffSize);
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if (dSize != rSize) {
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printf("error decoding %s : %s \n", filename, ZSTD_getErrorName(dSize));
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exit(7);
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}
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free(buffer);
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return true;
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#else
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return false;
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#endif
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}
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const char* get_file_data(size_t *len, const char* filename)
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{
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const char *ext = strrchr(filename, '.');
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size_t data_len = 0;
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const char* data = nullptr;
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if (strcmp(ext, ".gz") == 0) {
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// gzipped data.
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std::vector<char> buf;
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bool ret = gz_load(&buf, filename);
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if (ret) {
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char *p = static_cast<char*>(malloc(buf.size() + 1)); // @fixme { implement deleter }
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memcpy(p, &buf.at(0), buf.size());
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p[buf.size()] = '\0';
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data = p;
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data_len = buf.size();
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}
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} else if (strcmp(ext, ".zst") == 0) {
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printf("zstd\n");
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// Zstandard data.
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std::vector<char> buf;
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bool ret = zstd_load(&buf, filename);
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if (ret) {
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char *p = static_cast<char*>(malloc(buf.size() + 1)); // @fixme { implement deleter }
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memcpy(p, &buf.at(0), buf.size());
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p[buf.size()] = '\0';
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data = p;
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data_len = buf.size();
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}
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} else {
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data = mmap_file(&data_len, filename);
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}
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(*len) = data_len;
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return data;
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}
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bool LoadObjAndConvert(float bmin[3], float bmax[3], const char* filename, int num_threads, bool verbose)
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{
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tinyobj_opt::attrib_t attrib;
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std::vector<tinyobj_opt::shape_t> shapes;
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std::vector<tinyobj_opt::material_t> materials;
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auto load_t_begin = std::chrono::high_resolution_clock::now();
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size_t data_len = 0;
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const char* data = get_file_data(&data_len, filename);
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if (data == nullptr) {
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printf("failed to load file\n");
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exit(-1);
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return false;
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}
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auto load_t_end = std::chrono::high_resolution_clock::now();
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std::chrono::duration<double, std::milli> load_ms = load_t_end - load_t_begin;
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if (verbose) {
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std::cout << "filesize: " << data_len << std::endl;
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std::cout << "load time: " << load_ms.count() << " [msecs]" << std::endl;
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}
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tinyobj_opt::LoadOption option;
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option.req_num_threads = num_threads;
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option.verbose = verbose;
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bool ret = parseObj(&attrib, &shapes, &materials, data, data_len, option);
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if (!ret) {
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std::cerr << "Failed to parse .obj" << std::endl;
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return false;
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}
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bmin[0] = bmin[1] = bmin[2] = std::numeric_limits<float>::max();
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bmax[0] = bmax[1] = bmax[2] = -std::numeric_limits<float>::max();
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//std::cout << "vertices.size() = " << attrib.vertices.size() << std::endl;
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//std::cout << "normals.size() = " << attrib.normals.size() << std::endl;
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{
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DrawObject o;
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std::vector<float> vb; // pos(3float), normal(3float), color(3float)
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size_t face_offset = 0;
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for (size_t v = 0; v < attrib.face_num_verts.size(); v++) {
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assert(attrib.face_num_verts[v] % 3 == 0); // assume all triangle face(multiple of 3).
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for (size_t f = 0; f < attrib.face_num_verts[v] / 3; f++) {
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tinyobj_opt::index_t idx0 = attrib.indices[face_offset+3*f+0];
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tinyobj_opt::index_t idx1 = attrib.indices[face_offset+3*f+1];
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tinyobj_opt::index_t idx2 = attrib.indices[face_offset+3*f+2];
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float v[3][3];
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for (int k = 0; k < 3; k++) {
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int f0 = idx0.vertex_index;
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int f1 = idx1.vertex_index;
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int f2 = idx2.vertex_index;
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assert(f0 >= 0);
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assert(f1 >= 0);
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assert(f2 >= 0);
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v[0][k] = attrib.vertices[3*f0+k];
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v[1][k] = attrib.vertices[3*f1+k];
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v[2][k] = attrib.vertices[3*f2+k];
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bmin[k] = std::min(v[0][k], bmin[k]);
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bmin[k] = std::min(v[1][k], bmin[k]);
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bmin[k] = std::min(v[2][k], bmin[k]);
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bmax[k] = std::max(v[0][k], bmax[k]);
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bmax[k] = std::max(v[1][k], bmax[k]);
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bmax[k] = std::max(v[2][k], bmax[k]);
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}
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float n[3][3];
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if (attrib.normals.size() > 0) {
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int nf0 = idx0.normal_index;
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int nf1 = idx1.normal_index;
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int nf2 = idx2.normal_index;
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if (nf0 >= 0 && nf1 >= 0 && nf2 >= 0) {
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assert(3*nf0+2 < attrib.normals.size());
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assert(3*nf1+2 < attrib.normals.size());
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assert(3*nf2+2 < attrib.normals.size());
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for (int k = 0; k < 3; k++) {
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n[0][k] = attrib.normals[3*nf0+k];
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n[1][k] = attrib.normals[3*nf1+k];
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n[2][k] = attrib.normals[3*nf2+k];
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}
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} else {
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// compute geometric normal
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CalcNormal(n[0], v[0], v[1], v[2]);
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n[1][0] = n[0][0]; n[1][1] = n[0][1]; n[1][2] = n[0][2];
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n[2][0] = n[0][0]; n[2][1] = n[0][1]; n[2][2] = n[0][2];
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}
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} else {
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// compute geometric normal
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CalcNormal(n[0], v[0], v[1], v[2]);
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n[1][0] = n[0][0]; n[1][1] = n[0][1]; n[1][2] = n[0][2];
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n[2][0] = n[0][0]; n[2][1] = n[0][1]; n[2][2] = n[0][2];
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}
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for (int k = 0; k < 3; k++) {
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vb.push_back(v[k][0]);
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vb.push_back(v[k][1]);
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vb.push_back(v[k][2]);
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vb.push_back(n[k][0]);
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vb.push_back(n[k][1]);
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vb.push_back(n[k][2]);
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// Use normal as color.
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float c[3] = {n[k][0], n[k][1], n[k][2]};
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float len2 = c[0] * c[0] + c[1] * c[1] + c[2] * c[2];
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if (len2 > 1.0e-6f) {
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float len = sqrtf(len2);
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c[0] /= len;
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c[1] /= len;
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c[2] /= len;
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}
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vb.push_back(c[0] * 0.5 + 0.5);
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vb.push_back(c[1] * 0.5 + 0.5);
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vb.push_back(c[2] * 0.5 + 0.5);
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}
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}
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face_offset += attrib.face_num_verts[v];
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}
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o.vb = 0;
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o.numTriangles = 0;
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if (vb.size() > 0) {
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glGenBuffers(1, &o.vb);
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glBindBuffer(GL_ARRAY_BUFFER, o.vb);
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glBufferData(GL_ARRAY_BUFFER, vb.size() * sizeof(float), &vb.at(0), GL_STATIC_DRAW);
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o.numTriangles = vb.size() / 9 / 3;
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}
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gDrawObjects.push_back(o);
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}
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printf("bmin = %f, %f, %f\n", bmin[0], bmin[1], bmin[2]);
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printf("bmax = %f, %f, %f\n", bmax[0], bmax[1], bmax[2]);
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return true;
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}
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void reshapeFunc(GLFWwindow* window, int w, int h)
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{
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(void)window;
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// for retinal display.
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int fb_w, fb_h;
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glfwGetFramebufferSize(window, &fb_w, &fb_h);
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glViewport(0, 0, fb_w, fb_h);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective(45.0, (float)w / (float)h, 0.01f, 100.0f);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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width = w;
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height = h;
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}
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void keyboardFunc(GLFWwindow *window, int key, int scancode, int action, int mods) {
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(void)window;
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(void)scancode;
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(void)mods;
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if(action == GLFW_PRESS || action == GLFW_REPEAT){
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// Move camera
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float mv_x = 0, mv_y = 0, mv_z = 0;
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if(key == GLFW_KEY_K) mv_x += 1;
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else if(key == GLFW_KEY_J) mv_x += -1;
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else if(key == GLFW_KEY_L) mv_y += 1;
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else if(key == GLFW_KEY_H) mv_y += -1;
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else if(key == GLFW_KEY_P) mv_z += 1;
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else if(key == GLFW_KEY_N) mv_z += -1;
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//camera.move(mv_x * 0.05, mv_y * 0.05, mv_z * 0.05);
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// Close window
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if(key == GLFW_KEY_Q || key == GLFW_KEY_ESCAPE) glfwSetWindowShouldClose(window, GL_TRUE);
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//init_frame = true;
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}
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}
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|
|
|
void clickFunc(GLFWwindow* window, int button, int action, int mods){
|
|
(void)window;
|
|
(void)mods;
|
|
if(button == GLFW_MOUSE_BUTTON_LEFT){
|
|
if(action == GLFW_PRESS){
|
|
mouseLeftPressed = true;
|
|
trackball(prev_quat, 0.0, 0.0, 0.0, 0.0);
|
|
} else if(action == GLFW_RELEASE){
|
|
mouseLeftPressed = false;
|
|
}
|
|
}
|
|
if(button == GLFW_MOUSE_BUTTON_RIGHT){
|
|
if(action == GLFW_PRESS){
|
|
mouseRightPressed = true;
|
|
} else if(action == GLFW_RELEASE){
|
|
mouseRightPressed = false;
|
|
}
|
|
}
|
|
if(button == GLFW_MOUSE_BUTTON_MIDDLE){
|
|
if(action == GLFW_PRESS){
|
|
mouseMiddlePressed = true;
|
|
} else if(action == GLFW_RELEASE){
|
|
mouseMiddlePressed = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
void motionFunc(GLFWwindow* window, double mouse_x, double mouse_y){
|
|
(void)window;
|
|
float rotScale = 1.0f;
|
|
float transScale = 2.0f;
|
|
|
|
if(mouseLeftPressed){
|
|
trackball(prev_quat,
|
|
rotScale * (2.0f * prevMouseX - width) / (float)width,
|
|
rotScale * (height - 2.0f * prevMouseY) / (float)height,
|
|
rotScale * (2.0f * mouse_x - width) / (float)width,
|
|
rotScale * (height - 2.0f * mouse_y) / (float)height);
|
|
|
|
add_quats(prev_quat, curr_quat, curr_quat);
|
|
} else if (mouseMiddlePressed) {
|
|
eye[0] -= transScale * (mouse_x - prevMouseX) / (float)width;
|
|
lookat[0] -= transScale * (mouse_x - prevMouseX) / (float)width;
|
|
eye[1] += transScale * (mouse_y - prevMouseY) / (float)height;
|
|
lookat[1] += transScale * (mouse_y - prevMouseY) / (float)height;
|
|
} else if (mouseRightPressed) {
|
|
eye[2] += transScale * (mouse_y - prevMouseY) / (float)height;
|
|
lookat[2] += transScale * (mouse_y - prevMouseY) / (float)height;
|
|
}
|
|
|
|
// Update mouse point
|
|
prevMouseX = mouse_x;
|
|
prevMouseY = mouse_y;
|
|
}
|
|
|
|
void Draw(const std::vector<DrawObject>& drawObjects)
|
|
{
|
|
glPolygonMode(GL_FRONT, GL_FILL);
|
|
glPolygonMode(GL_BACK, GL_FILL);
|
|
|
|
glEnable(GL_POLYGON_OFFSET_FILL);
|
|
glPolygonOffset(1.0, 1.0);
|
|
glColor3f(1.0f, 1.0f, 1.0f);
|
|
for (size_t i = 0; i < drawObjects.size(); i++) {
|
|
DrawObject o = drawObjects[i];
|
|
if (o.vb < 1) {
|
|
continue;
|
|
}
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, o.vb);
|
|
glEnableClientState(GL_VERTEX_ARRAY);
|
|
glEnableClientState(GL_NORMAL_ARRAY);
|
|
glEnableClientState(GL_COLOR_ARRAY);
|
|
glVertexPointer(3, GL_FLOAT, 36, (const void*)0);
|
|
glNormalPointer(GL_FLOAT, 36, (const void*)(sizeof(float)*3));
|
|
glColorPointer(3, GL_FLOAT, 36, (const void*)(sizeof(float)*6));
|
|
|
|
glDrawArrays(GL_TRIANGLES, 0, 3 * o.numTriangles);
|
|
CheckErrors("drawarrays");
|
|
}
|
|
|
|
// draw wireframe
|
|
glDisable(GL_POLYGON_OFFSET_FILL);
|
|
glPolygonMode(GL_FRONT, GL_LINE);
|
|
glPolygonMode(GL_BACK, GL_LINE);
|
|
|
|
glColor3f(0.0f, 0.0f, 0.4f);
|
|
for (size_t i = 0; i < drawObjects.size(); i++) {
|
|
DrawObject o = drawObjects[i];
|
|
if (o.vb < 1) {
|
|
continue;
|
|
}
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, o.vb);
|
|
glEnableClientState(GL_VERTEX_ARRAY);
|
|
glEnableClientState(GL_NORMAL_ARRAY);
|
|
glDisableClientState(GL_COLOR_ARRAY);
|
|
glVertexPointer(3, GL_FLOAT, 36, (const void*)0);
|
|
glNormalPointer(GL_FLOAT, 36, (const void*)(sizeof(float)*3));
|
|
|
|
glDrawArrays(GL_TRIANGLES, 0, 3 * o.numTriangles);
|
|
CheckErrors("drawarrays");
|
|
}
|
|
}
|
|
|
|
static void Init() {
|
|
trackball(curr_quat, 0, 0, 0, 0);
|
|
|
|
eye[0] = 0.0f;
|
|
eye[1] = 0.0f;
|
|
eye[2] = 3.0f;
|
|
|
|
lookat[0] = 0.0f;
|
|
lookat[1] = 0.0f;
|
|
lookat[2] = 0.0f;
|
|
|
|
up[0] = 0.0f;
|
|
up[1] = 1.0f;
|
|
up[2] = 0.0f;
|
|
}
|
|
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
if (argc < 2) {
|
|
std::cout << "view input.obj <num_threads> <benchark_only> <verbose>" << std::endl;
|
|
return 0;
|
|
}
|
|
|
|
bool benchmark_only = false;
|
|
int num_threads = -1;
|
|
bool verbose = false;
|
|
|
|
if (argc > 2) {
|
|
num_threads = atoi(argv[2]);
|
|
}
|
|
|
|
if (argc > 3) {
|
|
benchmark_only = (atoi(argv[3]) > 0) ? true : false;
|
|
}
|
|
|
|
if (argc > 4) {
|
|
verbose = true;
|
|
}
|
|
|
|
if (benchmark_only) {
|
|
|
|
tinyobj_opt::attrib_t attrib;
|
|
std::vector<tinyobj_opt::shape_t> shapes;
|
|
std::vector<tinyobj_opt::material_t> materials;
|
|
|
|
size_t data_len = 0;
|
|
const char* data = get_file_data(&data_len, argv[1]);
|
|
if (data == nullptr) {
|
|
printf("failed to load file\n");
|
|
exit(-1);
|
|
return false;
|
|
}
|
|
|
|
if (data_len < 4) {
|
|
printf("Empty file\n");
|
|
exit(-1);
|
|
return false;
|
|
}
|
|
printf("filesize: %d\n", (int)data_len);
|
|
tinyobj_opt::LoadOption option;
|
|
option.req_num_threads = num_threads;
|
|
option.verbose = true;
|
|
|
|
bool ret = parseObj(&attrib, &shapes, &materials, data, data_len, option);
|
|
|
|
return ret;
|
|
}
|
|
|
|
Init();
|
|
|
|
std::cout << "Initialize GLFW..." << std::endl;
|
|
|
|
if(!glfwInit()){
|
|
std::cerr << "Failed to initialize GLFW." << std::endl;
|
|
return -1;
|
|
}
|
|
|
|
std::cout << "GLFW OK." << std::endl;
|
|
|
|
|
|
window = glfwCreateWindow(width, height, "Obj viewer", NULL, NULL);
|
|
if(window == NULL){
|
|
std::cerr << "Failed to open GLFW window. " << std::endl;
|
|
glfwTerminate();
|
|
return 1;
|
|
}
|
|
|
|
glfwMakeContextCurrent(window);
|
|
glfwSwapInterval(1);
|
|
|
|
// Callback
|
|
glfwSetWindowSizeCallback(window, reshapeFunc);
|
|
glfwSetKeyCallback(window, keyboardFunc);
|
|
glfwSetMouseButtonCallback(window, clickFunc);
|
|
glfwSetCursorPosCallback(window, motionFunc);
|
|
|
|
glewExperimental = true;
|
|
if (glewInit() != GLEW_OK) {
|
|
std::cerr << "Failed to initialize GLEW." << std::endl;
|
|
return -1;
|
|
}
|
|
|
|
reshapeFunc(window, width, height);
|
|
|
|
float bmin[3], bmax[3];
|
|
if (false == LoadObjAndConvert(bmin, bmax, argv[1], num_threads, verbose)) {
|
|
printf("failed to load & conv\n");
|
|
return -1;
|
|
}
|
|
|
|
float maxExtent = 0.5f * (bmax[0] - bmin[0]);
|
|
if (maxExtent < 0.5f * (bmax[1] - bmin[1])) {
|
|
maxExtent = 0.5f * (bmax[1] - bmin[1]);
|
|
}
|
|
if (maxExtent < 0.5f * (bmax[2] - bmin[2])) {
|
|
maxExtent = 0.5f * (bmax[2] - bmin[2]);
|
|
}
|
|
|
|
while(glfwWindowShouldClose(window) == GL_FALSE) {
|
|
glfwPollEvents();
|
|
glClearColor(0.1f, 0.2f, 0.3f, 1.0f);
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
|
|
glEnable(GL_DEPTH_TEST);
|
|
|
|
// camera & rotate
|
|
glMatrixMode(GL_MODELVIEW);
|
|
glLoadIdentity();
|
|
GLfloat mat[4][4];
|
|
gluLookAt(eye[0], eye[1], eye[2], lookat[0], lookat[1], lookat[2], up[0], up[1], up[2]);
|
|
build_rotmatrix(mat, curr_quat);
|
|
glMultMatrixf(&mat[0][0]);
|
|
|
|
// Fit to -1, 1
|
|
glScalef(1.0f / maxExtent, 1.0f / maxExtent, 1.0f / maxExtent);
|
|
|
|
// Centerize object.
|
|
glTranslatef(-0.5*(bmax[0] + bmin[0]), -0.5*(bmax[1] + bmin[1]), -0.5*(bmax[2] + bmin[2]));
|
|
|
|
Draw(gDrawObjects);
|
|
|
|
glfwSwapBuffers(window);
|
|
}
|
|
|
|
glfwTerminate();
|
|
}
|