package effects;

import javax.media.opengl.GL;

import com.xplsv.utils.Timer;

import core.Vertex;

public class EffectHypnoRays extends Effect
{
	private Vertex[] meshData;
	
	public EffectHypnoRays(GL gl, int start, int duration)
	{
		super(gl, start, duration);
	}
	
	public void init()
	{
		int sides = 200;
		int radious = 4;
		float angle = ( 360.0f / (float)(sides-1) ) * ( (float)Math.PI / 180.0f );
		
		meshData = new Vertex[sides+1];
		
		Vertex v = new Vertex();

		v.position.x = 0.0f;
		v.position.y = 0.0f;
		v.position.z = 0.0f;

		v.colour.r = 0.0f;
		v.colour.g = 0.0f;
		v.colour.b = 0.2f;
		
		meshData[0] = v;
		
		for (int i = 1; i <= sides; i++)
		{
			v = new Vertex();

			v.position.x = (float) (radious * Math.cos(i * angle));
			v.position.y = (float) (radious * Math.sin(i * angle));
			v.position.z = 0;			

			v.colour.r = (float)Math.random() + (float)Math.sin(i*.5) - 1.0f; 
			v.colour.g = v.colour.r;
			v.colour.b = v.colour.r + 0.2f; 

			meshData[i] = v;
		}
	}
	
	public void render()
	{
		if(!active())
			return;
		
		gl.glLoadIdentity();
		gl.glTranslatef(0.0f, 0.0f, - 5.0f);
		gl.glRotatef((float)(Timer.get()*.01f), 0.1f, 0.0f, 1.0f);
		
		gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE);
		gl.glBegin(GL.GL_TRIANGLE_FAN);

		for (int i = 0; i < meshData.length; i++)
		{
			gl.glColor4f(meshData[i].colour.r, meshData[i].colour.g, meshData[i].colour.b, 1.0f);
			gl.glVertex3f(meshData[i].position.x, meshData[i].position.y, meshData[i].position.z);
		}

		gl.glEnd();
	}
}