Which of the following OpenGL function draws a rectangle?

Which of the following OpenGL function draws a rectangle?

glRectf()
Then we actually draw the rectangle using the function glRectf(). We pass in as parameters to glRectf() two sets of numbers: the x and y coordinates for one vertex of the rectangle you want to draw, and the x and y coordinates for the opposite vertex.

How do you make a rectangle in WebGL?

Steps to Draw a Quadrilateral

1. Step 1 − Prepare the Canvas and Get the WebGL Rendering Context.
2. Step 2 − Define the Geometry and Store it in the Buffer Objects.
3. Step 3 − Create and Compile the Shader Programs.
4. Step 4 − Associate the Shader Programs to Buffer Objects.
5. Step 5 − Drawing the Required Object.

What is glvertex2i?

The glVertex function commands are used within glBegin/glEnd pairs to specify point, line, and polygon vertices. The current color, normal, and texture coordinates are associated with the vertex when glVertex is called.

How do we add color in OpenGL?

Here are some examples of commands for setting drawing colors in OpenGL: glColor3f(0,0,0); // Draw in black. glColor3f(1,1,1); // Draw in white. glColor3f(1,0,0); // Draw in full-intensity red.

How to draw unfilled rectangle shape in OpenGL?

I want to draw unfilled rectangle shape in OpenGL, but when I used glBegin (GL_QUADS) or glBegin (GL_POLYGON), the resulted shape is filled but I want to be unfilled. How I can draw unfilled rectangle.

Do you need glut to compile OpenGL?

(you may need to aquire glut or freeglut to be able to compile this. The alternative, just using a frame/dialog based app and your own code to setup the window, process the keys, handle idle times, handle resizing etc, etc is quite long-winded. glut or freeGlut are a much easier learning curve)

Do you need Glaux to draw a rectangle?

Start at the beginning and work your way through them. GLAUX is rather old in the tooth now, though is mostly used for image-loading routines. Just get a bmp or tga loader and you’ll be able to do without it for the most part.

How many characters in the third line of OpenGL?

The third line will allow any color in an 0xRRGGBBAA format. The content must be between 30 and 50000 characters. … Download, Vote, Comment, Publish.