RectPack2D demo test

Main.hx

package;
import kha.Framebuffer;
import kha.System;
import kha.Image;
import kha.Color;
import kha.Assets;
import kha.Scaler;
import kha.Color;
import kha.Font;
import kha.Assets;
import kha.Scheduler;
import kha.graphics2.Graphics;
import kha.graphics4.DepthStencilFormat;
import kha.input.Keyboard;
import kha.input.Mouse;
import kha.input.KeyCode;
import kha.math.FastMatrix3;
import kha.WindowOptions;
import kha.WindowMode;
import kha.Window;
class Main {
    var font:Font;
    public static 
    function main() {
        System.start( {  title: "RectPack2D demo"
                             ,  width: 4096, height: 4096
                             ,  window: { windowFeatures:    FeatureResizable }
                             , framebuffer: { samplesPerPixel: 4 } }
                             , function( window: Window ){
                                new Main();
        } );
    }
    public function new(){ Assets.loadEverything( loadAll ); }
    public function loadAll(){
        trace( 'loadAll' );
        font = Assets.fonts.Arimo_Bold;
        startRendering();
        initInputs();
    }
    function startRendering(){
        System.notifyOnFrames( function ( framebuffer ) { render( framebuffer[0] ); } );
        Scheduler.addTimeTask(update, 0, 1 / 60);
    }
    inline
    function render( framebuffer: Framebuffer ){
        var g: Graphics = framebuffer.g2;
        g.begin( true, 0xFFFFFFFF ); 
        g.font = font;
        g.fontSize = 24;
        g.color = Color.Black;
        g.drawString( "Hello, world!", 50, 20 ); 
        g.end();
    }
    inline
    function update(): Void {
    
    }
    function initInputs() {
        if (Mouse.get() != null) Mouse.get().notify( mouseDown, mouseUp, mouseMove, mouseWheel );
        if( Keyboard.get() != null ) Keyboard.get().notify( keyDown, keyUp, null );
    }
    function keyDown( keyCode: Int ): Void {
        trace('keydown ' + keyCode );
    }
    function keyUp( keyCode: Int ): Void { 
        trace('keyup ' + keyCode );
    }
    function mouseDown( button: Int, x: Int, y: Int ): Void {
        trace('down');
    }

    function mouseUp( button: Int, x: Int, y: Int ): Void {
        trace('up');
    }

    function mouseMove( x: Int, y: Int, movementX: Int, movementY: Int ): Void {
        trace('Move');
    }

    function mouseWheel( delta: Int ): Void {
        trace('Wheel');
    }
}