RectangleHelper.java

package info.u250.c2d.box2deditor.gdx.scenes;

import info.u250.c2d.box2d.model.fixture.b2RectangleFixtureDefModel;
import info.u250.c2d.box2deditor.gdx.support.AbstractBox2dHelper;
import info.u250.c2d.box2deditor.gdx.support.Click;
import info.u250.c2d.box2deditor.gdx.support.Geometry;
import info.u250.c2d.engine.Engine;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input.Buttons;
import com.badlogic.gdx.InputAdapter;
import com.badlogic.gdx.InputProcessor;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.math.Vector2;

public class RectangleHelper extends AbstractBox2dHelper<b2RectangleFixtureDefModel> {
	final Vector2 secondPoint = new Vector2();
	Click click = Click.NONE;
	InputAdapter input = new InputAdapter() {
		@Override
		public boolean touchDown(int x, int y, int pointer, int button) {
			if(button == Buttons.LEFT){
				if ( Click.NONE == click) {
					secondPoint.set(Engine.screenToWorld(x, y));
					click = Click.FIRST;
					// do start
				} else if (click == Click.FIRST) {
					secondPoint.set(Engine.screenToWorld(x, y));
					
					float width =  secondPoint.x - worldCenter.x ;
					float height = secondPoint.y - worldCenter.y ;
					
					model.width = Math.abs(width)*2;
					model.height = Math.abs(height)*2;

					updateToUI();
					
					click = Click.NONE;
					// do end
				}
			}
			return super.touchDown(x, y, pointer, button);
		}

		@Override
		public boolean mouseMoved(int x, int y) {
			if (click == Click.FIRST) {
				// do move
				secondPoint.set(Engine.screenToWorld(x, y));
				float width =  secondPoint.x - worldCenter.x ;
				float height = secondPoint.y - worldCenter.y ;
				
				model.width = Math.abs(width)*2;
				model.height = Math.abs(height)*2;
				
				updateToUI();
			}
			return super.mouseMoved(x, y);
		}
	};

	public RectangleHelper(MainScene adapter) {
		super(adapter);
	}
	@Override
	public void render(float delta) {
		Gdx.gl.glEnable(GL20.GL_BLEND);
		Geometry.renderBox(model, worldCenter,0,false);
		Gdx.gl.glDisable(GL20.GL_BLEND);
	}

	@Override
	public InputProcessor getInputProcessor() {
		return input;
	}

	@Override
	public Class<b2RectangleFixtureDefModel> getType() {
		return b2RectangleFixtureDefModel.class;
	}

}