setup basic environment (1057d0eb) · Commits · bsmrgo / graphics-playground

main.go

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Original line number	Diff line number	Diff line
		package main

		import (
		"fmt"
		"runtime"

		"repositories.muehmer.net/bsmrgo/saola/support/scene"

		si "repositories.muehmer.net/bsmrgo/graphics-playground/scenes/icosahedron"
		)

		func init() {
		// This is needed to arrange that main() runs on main thread.
		// See documentation for functions that are only allowed to be called from the main thread.
		runtime.LockOSThread()
		}

		const (
		programName = "Graphics Playground"
		defaultWidth = 1650
		defaultHeight = 1080
		)

		func main() {
		fmt.Printf("Welcome to the %s!\n", programName)
		setup := scene.WindowSetup{
		Width: defaultWidth,
		Height: defaultHeight,
		Title: programName,
		ContextVersionMajor: 4,
		ContextVersionMinor: 3,
		CenterOnPrimaryMonitor: true,
		}
		hooks := si.Hooks()
		scene.Manage(setup, hooks)
		}

scenes/icosahedron/icosahedron.go

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Original line number	Diff line number	Diff line
		package icosahedron

		import (
		"fmt"
		"os"

		"github.com/go-gl/gl/v4.3-core/gl"
		"github.com/go-gl/glfw/v3.2/glfw"
		"repositories.muehmer.net/bsmrgo/saola/support/scene"
		)

		const (
		sceneName = "Icosahedron"
		)

		// Hooks returns our hooks.
		func Hooks() scene.HooksType {
		hooks := scene.HooksType{
		Initialize: initialize,
		Render: render,
		Resize: resize,
		Key: keyCallback,
		MouseButton: mouseButtonCallback,
		JoystickAxis: joystickAxisCallback,
		JoystickButton: joystickButtonCallback,
		}
		return hooks
		}

		// Initialize the environment.
		func initialize() {
		fmt.Fprintf(os.Stderr, "[%s] Initialize()\n", sceneName)
		}

		// Resize changes the view.
		func resize(width, height int) {
		fmt.Fprintf(os.Stderr, "[%s] Resize(%d, %d)\n", sceneName, width, height)
		}

		// Render something.
		func render() {
		gl.Clear(gl.COLOR_BUFFER_BIT)
		}

		func keyCallback(w *glfw.Window, key glfw.Key, scancode int, action glfw.Action, mods glfw.ModifierKey) {
		fmt.Fprintf(os.Stderr, "[%s] key: %v - scancode: %d - action: %v - mode: %v\n", sceneName, key, scancode, action, mods)
		if key == glfw.KeyEscape && action == glfw.Press {
		w.SetShouldClose(true)
		}
		}

		func mouseButtonCallback(w *glfw.Window, button glfw.MouseButton, action glfw.Action, mod glfw.ModifierKey) {
		fmt.Fprintf(os.Stderr, "[%s] mouse button: %v - action: %v - mode: %v\n", sceneName, button, action, mod)
		}

		func joystickAxisCallback(js glfw.Joystick, axis int, old float32, new float32) {
		fmt.Fprintf(os.Stderr, "[%s] joystick %v axis %d changed: from %f to %f\n", sceneName, js, axis, old, new)
		}

		func joystickButtonCallback(js glfw.Joystick, button int, old byte, new byte) {
		fmt.Fprintf(os.Stderr, "[%s] joysitck %v button %d changed from %d to %d\n", sceneName, js, button, old, new)
		}