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Make basic glut renderer work

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This commit is contained in:
Théophile Bastian 2018-02-06 19:10:08 +01:00
parent 739d1da36f
commit c179b1049f
1 changed files with 36 additions and 14 deletions
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50
render/GlutRender.cpp
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@ -15,15 +15,20 @@ void GlutRender::init(int* argc, char** argv,
int wid, int hei, const char* win_name) int wid, int hei, const char* win_name)
{ {
glutInit(argc, argv); glutInit(argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB); glutInitDisplayMode(GLUT_DOUBLE);
glutInitWindowSize(wid, hei); glutInitWindowSize(wid, hei);
glutCreateWindow(win_name); glutCreateWindow(win_name);
glClearColor(0.0, 0.0, 0.0, 0.0);
glShadeModel(GL_FLAT);
glutDisplayFunc(display_handle); glutDisplayFunc(display_handle);
glutReshapeFunc(reshape_handle); glutReshapeFunc(reshape_handle);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // Background color
glClearDepth(1.0f); // Set background depth to farthest
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glShadeModel(GL_SMOOTH); // Enable smooth shading
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
} }
void GlutRender::cleanup() { void GlutRender::cleanup() {
@ -38,29 +43,46 @@ void GlutRender::remove_mesh(const Mesh* mesh) {
} }
void GlutRender::run() { void GlutRender::run() {
glutMainLoop();
} }
void GlutRender::reshape(int wid, int hei) { void GlutRender::reshape(int wid, int hei) {
glViewport(0, 0, (GLsizei) wid, (GLsizei) hei); if (hei == 0)
glMatrixMode(GL_PROJECTION); hei = 1;
glLoadIdentity(); GLfloat aspect = (GLfloat)wid / (GLfloat)hei;
gluOrtho2D(0.0, (GLdouble) wid, 0.0, (GLdouble) hei);
glViewport(0, 0, wid, hei);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
// Enable perspective projection with fovy, aspect, zNear and zFar
gluPerspective(45.0f, aspect, 0.1f, 100.0f);
} }
void GlutRender::display() { void GlutRender::display() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
for(const Mesh* mesh: meshes) { for(const Mesh* mesh: meshes) {
glLoadIdentity();
glTranslatef(.0f, .0f, -6.0f);
const std::vector<Point>& points = mesh->get_vertices(); const std::vector<Point>& points = mesh->get_vertices();
glBegin(GL_TRIANGLES);
for(const Face& face: mesh->get_faces()) { for(const Face& face: mesh->get_faces()) {
const Point& p0 = face.pt(0, points), const Point& p0 = face.pt(0, points),
p1 = face.pt(2, points), p1 = face.pt(1, points),
p2 = face.pt(2, points); p2 = face.pt(2, points);
glBegin(GL_TRIANGLES); glColor3f(1.0f, 1.0f, 0.0f);
glVertex3d(p0[0], p0[1], p0[2]); glVertex3f(p0[0], p0[1], p0[2]);
glVertex3d(p1[0], p1[1], p1[2]); glVertex3f(p1[0], p1[1], p1[2]);
glVertex3d(p2[0], p2[1], p2[2]); glVertex3f(p2[0], p2[1], p2[2]);
glEnd();
} }
glEnd();
} }
glutSwapBuffers();
} }
void GlutRender::reshape_handle(int wid, int hei) { void GlutRender::reshape_handle(int wid, int hei) {