Computer Graphic Practical 3

COMPUTER GRAPHIC

In today's computer graphics, we used openGL to draw lines, triangles, quads and a final product. I did not really do a good job so I intended to go home and further improve.

LINES

The belowing codes is the one I added the function(GL_LINES) to draw the lines.

glVertex3f(0.0f, 0.0f, 0.0f);

glVertex3f(200.0f, 200.0f, 0.0f);

glVertex3f(0.0f, 0.0f, 0.0f);

glVertex3f(-200.0f, -200.0f, 0.0f);

glVertex3f(0.0f, 0.0f, 0.0f);

glVertex3f(-200.0f, 200.0f, 0.0f);

glVertex3f(0.0f, 0.0f, 0.0f);

glVertex3f(200.0f, -200.0f, 0.0f);

The product is the following:

TRIANGLES

The belowing codes is the one I added the function(GL_TRIANGLE) to draw the triangle.

glVertex3f(0.0f, 0.0f, 0.0f);
glVertex3f(200.0f, -200.0f, 0.0f);
glVertex3f(200.0f, 200.0f, 0.0f);

The product is the following:

QUADS

The belowing codes is the one I added the function(GL_QUADS) to draw the quad.

glVertex3f(-0.25,0.25,0);
glVertex3f(-0.25,-0.25,0.0);
glVertex3f(0.25,-0.25,0.0);
glVertex3f(0.25,0.25,0.0);

The product is the following:

FINAL WORK

This is just something that I created without an idea, but it is still SOMETHING alright?

The only thing that people need to take note is:

1) The colour varies from 0 - 1.
2) Positions of the pixel varies from -1 to 1, where the middle is considered 0.