Assignment 4: Texturing and Coloring Geometric Objects

Objectives

To map textures onto 2D/3D objects and to paint vertices with different colors. 

Description

You will use the base code provided below to extend your Paint web application to apply textures onto objects and to support individual colors per object vertex. Your application is required to have the following features:

• A canvas where the user can click to draw 2D and 3D objects.
  • Your scene should already start with a textured cube (choose any picture). 
    • 1 face has the whole texture image, 1 has the top half, 1 has the bottom half, 1 has the texture twice (on the left and right of each other), 1 has the texture 9 times in a 3x3 grid.
  • When the user clicks or drags the mouse on on the canvas, a 2D or a 3D object is drawn on the clicked.
    • If the object is a tilted cube or a obj file, render it with the selected texture mapped onto it. Every face has the same texture. If no texture has been loaded, render it with the current selected color.
    • It the object is not a tilted cube, render it with the selected color. If the color is solid, the entire object should have the same color. If the color is "rainbow", each vertex of the object should have different random colors and the pixels in between the vertices should have interpolated colors (webgl interpolates it automatically). 
• A button to switch between solid colors and "rainbow" colors.
• A button to load a texture stored in your computer.
• All the features from previous assignments. 

Resources

Readings:  Matsuda/Lea Ch5

Base code: ASG4.zip