android-scala-gl

Android OpenGL ES 2 / draw utility library written in scala

Overview

This project serves to wrap up some common functionality regarding drawing to the screen on the Android platform. I am also fairly new to the scala language and have been very impressed with what I can do with it so far. I hope to continue to add more usefull utilities as I encounter a need for them.

Features

I will try to keep adding to this list as I go. For now here is a short list of features:

• Simple OpenGL drawable class hierarchy
  • Includes Triangle, Square, Line, Sprite class
• Simple way to extend functionality via shaders
• DRY (Do not repeat yourself)

Example Usage

val texInfo = Drawable.loadGLTexture(imgPath)

val w = 2
val h = 2
        
val verts = Array(-0.5f*w,  0.5f*h, 0.0f,   // top left
                -0.5f*w, -0.5f*h, 0.0f,   // bottom left
                 0.5f*w,  0.5f*h, 0.0f,	  // top right
                 -0.5f*w, -0.5f*h, 0.0f,  // bottom left	
                 0.5f*w, -0.5f*h, 0.0f,   // bottom right
                 0.5f*w,  0.5f*h, 0.0f )  // top right
val color =  Array(1.0f, 1.0f, 1.0f, 1.0f)      
val tex = Array(     0.0f, 0.0f,  // top left
    						  1.0f, 0.0f,  // bottom left
    						  0.0f, 1.0f,  // top right
    						  1.0f, 0.0f,  // bottom left
            1.0f, 1.0f,  // bottom right
            0.0f, 1.0f) // top right
                  
val sprite = new Sprite( verts, color, tex, texInfo.textureId)

Example Projects

I currently use this iib in an Android app "Perspective Correct" that should be out in the google play store soon ~(10/20/2013)

Here is a screen shot of the current app