/*******************************************************************************
 * Breakout Cave Survey Visualizer
 *
 * Copyright (C) 2014 James Edwards
 *
 * jedwards8 at fastmail dot fm
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *******************************************************************************/
package org.breakout.model;

import org.andork.jogl.shadelet.Shadelet;

public class GlowShadelet extends Shadelet {
	public GlowShadelet() {
		setProperty("vertParam", "a_glow");
		setProperty("fragParam", "v_glow");
		setProperty("color", "color");
		setProperty("out", "gl_FragColor");
		setProperty("vertParamDeclaration", "attribute vec2 $vertParam;");
		setProperty("fragParamDeclaration", "varying vec2 $fragParam;");
		setProperty("colorDeclaration", "/* fragment */ uniform vec4 $color;");
	}

	public GlowShadelet color(Object color) {
		setProperty("color", color);
		return this;
	}

	public GlowShadelet colorDeclaration(Object colorDeclaration) {
		setProperty("colorDeclaration", colorDeclaration);
		return this;
	}

	public GlowShadelet fragParam(Object fragParam) {
		setProperty("fragParam", fragParam);
		return this;
	}

	public GlowShadelet fragParamDeclaration(Object fragParamDeclaration) {
		setProperty("fragParamDeclaration", fragParamDeclaration);
		return this;
	}

	@Override
	public String getFragmentShaderMainCode() {
		return "  $out = mix($out, $color, clamp(min($fragParam.x, $fragParam.y), 0.0, 1.0));";
	}

	@Override
	public String getVertexShaderMainCode() {
		return "$fragParam = $vertParam;";
	}

	public GlowShadelet out(Object out) {
		setProperty("out", out);
		return this;
	}

	public GlowShadelet outDeclaration(Object outDeclaration) {
		setProperty("outDeclaration", outDeclaration);
		return this;
	}

	public String vertParam() {
		return replaceProperties("$vertParam");
	}

	public GlowShadelet vertParam(Object vertParam) {
		setProperty("vertParam", vertParam);
		return this;
	}

	public GlowShadelet vertParamDeclaration(Object vertParamDeclaration) {
		setProperty("vertParamDeclaration", vertParamDeclaration);
		return this;
	}
}