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Kesulitan membuat gear 3d #5
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Apa yang dibingungkan? coba sampaikan secara lebih spesifik |
modelling 3dnya pak |
Masih belum spesifik Mas, modelling 3d di bagian mana yang kalian bingungkan. Kalau masih kesulitan, sebutkan saja bagian koding yang mana yang sulit. #include "GL/glut.h"
#include "math.h"
void initGL()
{
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClearDepth(1.0f);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glShadeModel(GL_SMOOTH);
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
}
float deg2rad (float degree) {
return degree * (22.0/7) / 180;
}
float getX (float sudut, float jariJari) {
return cos(deg2rad(sudut)) * jariJari;
}
float getY (float sudut, float jariJari) {
return sin(deg2rad(sudut)) * jariJari;
}
void segiLima (float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float x5, float y5, float z) {
glBegin(GL_POLYGON);
glVertex3f(x1,y1,z);
glVertex3f(x2,y2,z);
glVertex3f(x3,y3,z);
glVertex3f(x4,y4,z);
glVertex3f(x5,y5,z);
glEnd();
}
void segiEmpatKecil (float x1, float y1, float x2, float y2, float zDepan, float zBelakang) {
glBegin(GL_QUADS);
glVertex3f(x1,y1,zDepan);
glVertex3f(x2,y2,zDepan);
glVertex3f(x2,y2,zBelakang);
glVertex3f(x1,y1,zBelakang);
glEnd();
}
void gear (float diameterLuar, float diameterDalam, float tinggiGigi, float ketebalan, int banyakGigi) {
float delta = 360.0/banyakGigi;
float sudut = 0;
float zDepan = 0.5 * ketebalan;
float zBelakang = -zDepan;
for (int i=0; i<banyakGigi; i++) {
float sudut1 = sudut - 0.5 * delta;
float sudut2 = sudut + 0.5 * delta;
float x1 = getX(sudut1, diameterDalam);
float y1 = getY(sudut1, diameterDalam);
float x2 = getX(sudut2, diameterDalam);
float y2 = getY(sudut2, diameterDalam);
float x3 = getX(sudut2, diameterLuar);
float y3 = getY(sudut2, diameterLuar);
float x4 = getX(sudut, diameterLuar + tinggiGigi);
float y4 = getY(sudut, diameterLuar + tinggiGigi);
float x5 = getX(sudut1, diameterLuar);
float y5 = getY(sudut1, diameterLuar);
glColor3f(1,0,0);
segiLima (x1, y1, x2, y2, x3, y3, x4, y4, x5, y5, zDepan);
segiLima (x1, y1, x2, y2, x3, y3, x4, y4, x5, y5, zBelakang);
glColor3f(0,1,0);
segiEmpatKecil(x3, y3, x4, y4, zDepan, zBelakang);
segiEmpatKecil(x5, y5, x4, y4, zDepan, zBelakang);
segiEmpatKecil(x1, y1, x2, y2, zDepan, zBelakang);
sudut += delta;
}
}
float angle = 0;
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0, 0, -15);
glRotatef(45, 0, 1, 0);
glRotatef(angle, 0, 0, 1);
gear (3, 1, 1, 0.5, 20);
// diameter luar, diameter dalam, tinggi gigi, ketebalan, sudut
angle ++;
glutSwapBuffers();
}
void timer(int value)
{
glutPostRedisplay();
glutTimerFunc(15, timer, 0);
}
void reshape(GLsizei width, GLsizei height)
{
if (height == 0)
height = 1;
GLfloat aspect = (GLfloat)width / (GLfloat)height;
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0f, aspect, 0.1f, 100.0f);
}
int main(int argc, char **argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(640, 480);
glutInitWindowPosition(50, 50);
glutCreateWindow("3d-animation");
glutDisplayFunc(display);
glutReshapeFunc(reshape);
initGL();
glutTimerFunc(0, timer, 0);
glutMainLoop();
return 0;
} |
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Pak, saya mengalami kesusahan untuk membuat gear 3d, saya bingung dengan koordinat bila menggunakan gl polygon. terima kasih
@goFrendiAsgard
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