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Robot In OpenGL Using Line Function
The document describes code for drawing a robot using OpenGL lines and points functions. It includes code to initialize the display window and drawing colors. Most of the code consists of drawing the different body parts of the robot using line segments, including the head, neck, body, hands, legs, eyes, and a line between the eyes. The main function sets up the window and calls the initialization and display functions to render the robot graphics.
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Introduction to OpenGL programming for robot creation using line functions, covering initialization, drawing body parts (head, neck, body, limbs, eyes), and display setup.
Robot In OpenGL Using Line Function
- 1. Make Robot UsingLine Function In OpenGL #include "stdafx.h" // Run by Visual C++ 6 with OpenGL #include <GL/glut.h> void init (void) { /* select clearing (background) color */ glClearColor (0.0, 0.0, 0.0, 0.0); // (red, green, blue, alpha), used by glClear /* initialize viewing values */ glMatrixMode(GL_PROJECTION); glLoadIdentity(); glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0); // (left, right, bottom, top, near, far) } void display(void) { glClear (GL_COLOR_BUFFER_BIT);
- 2. //head glColor3f (1.0, 1.0,1.0); glBegin(GL_LINES); // Center is at the mid of main window due to glOrtho() glVertex2f (0.33, 0.75); glVertex2f (0.18, 0.75); glVertex2f (0.18, 0.55); glVertex2f (0.33, 0.55); glVertex2f (0.18, 0.75); glVertex2f (0.18, 0.55); glVertex2f (0.33, 0.75); glVertex2f (0.33, 0.55); glEnd(); //neck glColor3f (1.0, 1.0, 1.0);
- 3. glBegin(GL_LINES); // Centeris at the mid of main window due to glOrtho() glVertex2f (0.28, 0.55); glVertex2f (0.23, 0.55); glVertex2f (0.23, 0.40); glVertex2f (0.28, 0.40); glVertex2f (0.23, 0.55); glVertex2f (0.23, 0.40); glVertex2f (0.28, 0.55); glVertex2f (0.28, 0.40); glEnd(); //body glColor3f (1.0, 1.0, 1.0); glBegin(GL_LINES); // Center is at the mid of main window due to glOrtho() glVertex2f (0.40, 0.40); glVertex2f (0.10, 0.40); glVertex2f (0.10, -0.10); glVertex2f (0.40, -0.10);
- 4. glVertex2f (0.10, 0.40); glVertex2f(0.10, -0.10); glVertex2f (0.40, 0.40); glVertex2f (0.40, -0.10); glEnd(); //right hand glColor3f (1.0, 1.0, 1.0); glBegin(GL_LINES); // Center is at the mid of main window due to glOrtho() glVertex2f (0.48, 0.20); glVertex2f (0.40, 0.40); glVertex2f (0.40, 0.28); glVertex2f (0.48, 0.10); glVertex2f (0.48, 0.20); glVertex2f (0.48, 0.10); glEnd();
- 5. //left hand glColor3f (1.0,1.0, 1.0); glBegin(GL_LINES); // Center is at the mid of main window due to glOrtho() glVertex2f (-0.00, 0.20); glVertex2f (0.10, 0.40); glVertex2f (0.10, 0.28); glVertex2f (-0.00, 0.10); glVertex2f (-0.00, 0.20); glVertex2f (-0.00, 0.10); glEnd(); //right leg glColor3f (1.0, 1.0, 1.0); glBegin(GL_LINES); // Center is at the mid of main window due to glOrtho() glVertex2f (0.40, -0.10); glVertex2f (0.35, -0.10);
- 6. glVertex2f (0.35, -0.40); glVertex2f(0.40, -0.40); glVertex2f (0.35, -0.10); glVertex2f (0.35, -0.40); glVertex2f (0.40, -0.10); glVertex2f (0.40, -0.40); glEnd(); //left leg glColor3f (1.0, 1.0, 1.0); glBegin(GL_LINES); // Center is at the mid of main window due to glOrtho() glVertex2f (0.15, -0.10); glVertex2f (0.10, -0.10); glVertex2f (0.10, -0.40); glVertex2f (0.15, -0.40);
- 7. glVertex2f (0.10, -0.10); glVertex2f(0.10, -0.40); glVertex2f (0.15, -0.10); glVertex2f (0.15, -0.40); glEnd(); //right eye glColor3f (0.0, 1.0, 1.0); glBegin(GL_POINTS); // Center is at the mid of main window due to glOrtho() glVertex2f (0.29, 0.67); glEnd(); //left eye glColor3f (0.0, 1.0, 1.0); glBegin(GL_POINTS); // Center is at the mid of main window due to glOrtho() glVertex2f (0.23, 0.67); glEnd();
- 8. //line glColor3f (1.0, 1.0,1.0); glBegin(GL_LINES); // Center is at the mid of main window due to glOrtho() glVertex2f (0.29, 0.61); glVertex2f (0.23, 0.61); glEnd(); glFlush (); } int main(int argc, char** argv) { glutInit(&argc, argv); glutInitWindowSize (600, 500); glutInitWindowPosition (200, 100); // Screen origin (0,0) is at Top Left glutCreateWindow ("Hello Computer Graphics Students"); init();// calling init() glutDisplayFunc(display); // glut call back function, calling display() glutMainLoop(); return 0; // ANSI C requires main to return int. }