/*
 * Copyright 2013 MovingBlocks
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.terasology.rendering.cameras;

/**
 * Represents a plane of a view frustum.
 *
 */
public class FrustumPlane {

    private float a;
    private float b;
    private float c;
    private float d;

    /**
     * Init. a new view frustum with the default values in place.
     */
    public FrustumPlane() {
        // Do nothing.
    }

    /**
     * Init. a new view frustum with a given plane equation.
     * ax + by + cy + d = 0
     */
    public FrustumPlane(float a, float b, float c, float d) {
        this.a = a;
        this.b = b;
        this.c = c;
        this.d = d;
    }

    /**
     * Normalizes this plane.
     */
    public void normalize() {
        double t = Math.sqrt(a * a + b * b + c * c);
        a /= t;
        b /= t;
        c /= t;
        d /= t;
    }

    public float getA() {
        return a;
    }

    public void setA(float a) {
        this.a = a;
    }

    public float getB() {
        return b;
    }

    public void setB(float b) {
        this.b = b;
    }

    public float getC() {
        return c;
    }

    void setC(float c) {
        this.c = c;
    }

    public float getD() {
        return d;
    }

    public void setD(float d) {
        this.d = d;
    }
}