clns / opengl.swift

Wrappers around GLKit math functions in Swift

#OpenGL.swift

If you try to create a new OpenGL ES project in Xcode using Swift you will find that all of the code is commented out. This is primarily because Swift doesn't support union structs as they are inherently unsafe, however GLKit's math utilities heavily rely on them.

This project provides a drop in replacement for GLKit's math functions and types (it still uses them under the hood though). Instead of using GLK* types and functions you can now use TD* in Swift. As well as this the project also covers:

• Operator overloading so that matrix math is really simple
• Properties added via class extensions to all of GLKit's classes
• Wrappers around common OpenGL functions for submitting vertex and uniform data using the TD* matrix and vector types

##Installation

You'll need to add Math.h, Math.m and Math-Swift.swift to your Xcode project. In order for these to compile properly you'll need to add #import "Math.h" to your bridging header.

##Example

let aspect = GLfloat(CGRectGetWidth(self.view.bounds) / CGRectGetHeight(self.view.bounds))
let projectionMatrix = TDMatrix4MakePerspective(GLKMathDegreesToRadians(65.0), aspect, 0.1, 100.0)
var modelViewMatrix = TDMatrix4MakeTranslation(0.0, 0.0, 1.5)
modelViewMatrix = TDMatrix4Rotate(modelViewMatrix, rotation, 1.0, 1.0, 1.0)

//If using GLKit
self.effect?.transform.td_projectionMatrix = projectionMatrix
self.effect?.transform.td_modelviewMatrix = modelViewMatrix

//If using raw shaders
let mvpMatrix = projectionMatrix * modelViewMatrix
glUniformMatrix4fv(mvpMatrixSlot, TDFalse, mvpMatrix)

##Contact

Either create an issue on GitHub or email [email protected].

##License

Apache v2, see LICENSE file.