GLUT

Abstract

This is GLUT (version 3.7) binding for the programming language Go.

If you want the functions of freeglut download github.com/vitalibaumtrok/freeglut.

Installation

Linux

Install the programming language Go as described here https://golang.org/doc/install. Install Git and GLUT or freeglut.

Get this project with

$ go get github.com/vitalibaumtrok/glut

To update the package run (if needed)

$ go get -u github.com/vitalibaumtrok/glut

Compile it with

$ go install github.com/vitalibaumtrok/glut

Windows

Install the programming language Go as described here https://golang.org/doc/install. Install Git.

Get this project with (run this preferably from the Git Bash)

$ go get github.com/vitalibaumtrok/glut

To update the package run (if needed)

$ go get -u github.com/vitalibaumtrok/glut

Cgo needs another compiler to compile c files. On a 64 bit system a 64 bit compiler is needed. I tried it with the gcc. MinGW provides only 32 bit binaries. So go to http://tdm-gcc.tdragon.net to download 64 bit gcc binaries. Install it.

Then download freeglut from http://www.transmissionzero.co.uk/software/freeglut-devel/ and unpack it for example in

C:/Users/Alice/Downloads/freeglut

Then open the file github.com/vitalibaumtrok/glut/glut.go and change the first line in

// #cgo LDFLAGS: -lGL -lGLU -lglut
// #include <stdlib.h>
// #include <GL/glut.h>
// #include "gofunctions.h"

to

// #cgo LDFLAGS: -IC:/Users/Alice/Downloads/freeglut/include -LC:/Users/Alice/Downloads/freeglut/bin/x64 -l:freeglut.dll
// #include <stdlib.h>
// #include <GL/glut.h>
// #include "gofunctions.h"

To compile run

$ go install github.com/vitalibaumtrok/glut

Development

Programming language Go is used.

The reference for the GLUT version 3 functions is taken from https://www.opengl.org/resources/libraries/glut/glut-3.spec.pdf. The reference for the GLUT version 3.7 functions is taken from source code available on https://www.opengl.org/resources/libraries/glut/glut_downloads.php.

Example

package main

import (
	"github.com/vitalibaumtrok/glut"
)

func main() {
	glut.Init()
	glut.InitDisplayMode(glut.SINGLE | glut.RGBA)
	glut.InitWindowSize(640, 480)
	glut.CreateWindow("Testing GLUT binding for Go");
	glut.ReshapeFunc(reshape)
	glut.DisplayFunc(display)
	glut.KeyboardFunc(keyboard)
	glut.MainLoop()
}

func reshape(width, height int) {
	println("reshape")
}

func display() {
	println("display")
}

func keyboard(key uint8, x, y int) {
	if key==27 { // escape
		glut.DestroyWindow(glut.GetWindow())
	} else {
		if (glut.GetModifiers() & glut.ACTIVE_CTRL) > 0 {
			println("key pressed: ctrl +", key)
		} else {
			println("key pressed:", key)
		}
	}
}

Licensing Terms

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

For more information, please refer to http://unlicense.org