cn.liutils.api.draw.tess.Rect.java Source code

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Here is the source code for cn.liutils.api.draw.tess.Rect.java

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/**
 * Copyright (c) Lambda Innovation, 2013-2015
 * ??Lambda Innovation
 * http://www.li-dev.cn/
 *
 * This project is open-source, and it is distributed under 
 * the terms of GNU General Public License. You can modify
 * and distribute freely as long as you follow the license.
 * ??GNU???
 * ????
 * http://www.gnu.org/licenses/gpl.html
 */
package cn.liutils.api.draw.tess;

import java.util.EnumSet;

import net.minecraft.client.renderer.Tessellator;

import org.lwjgl.opengl.GL11;

import cn.liutils.api.draw.DrawObject;
import cn.liutils.api.draw.DrawObject.EventType;
import cn.liutils.util.HudUtils;

/**
 * A most simple rectangle drawer that takes rect's width and height, then draw it in
 * (0, 0, 0) -> (0, height, width) with a offset (tx, ty, tz)
 * @author WeathFolD
 */
public class Rect extends TessBase {

    public double width, height;

    public double tx, ty, tz;

    public RectMapping map = new RectMapping(); //Texture mapping data.

    public Rect() {
        super("simple_rect");
    }

    public Rect(double w, double h) {
        super("simple_rect");
        setSize(w, h);
    }

    public void setCentered() {
        tz = -width / 2;
        ty = -height / 2;
    }

    public void setSize(double w, double h) {
        width = w;
        height = h;
    }

    public void setOffset(double tx, double ty, double tz) {
        this.tx = tx;
        this.ty = ty;
        this.tz = tz;
    }

    @Override
    public EnumSet<EventType> getEvents() {
        return EnumSet.of(EventType.DO_TESS);
    }

    @Override
    public void onEvent(EventType event, DrawObject obj) {
        Tessellator t = Tessellator.instance;
        GL11.glTranslated(tx, ty, tz); //built in offset, usually in order to move it to center
        t.startDrawingQuads();
        {
            obj.post(EventType.IN_TESS);
            t.setNormal(1, 0, 0);
            t.addVertexWithUV(0, 0, 0, map.getMinU(), map.getMaxV());
            t.addVertexWithUV(0, 0, width, map.getMaxU(), map.getMaxV());
            t.addVertexWithUV(0, height, width, map.getMaxU(), map.getMinV());
            t.addVertexWithUV(0, height, 0, map.getMinU(), map.getMinV());
        }
        t.draw();
    }

}