content: package zmaster587.advancedRocketry.client.render;
  
  import org.lwjgl.opengl.GL11;
  
  public class RocketRenderHelper {
  	public static void renderOrbit(double x, double y, double z, double xRadius, double yRadius, double phase) {
  		renderOrbit(x, y, z, xRadius, yRadius, 0, 0);
  	}
  	
  	public static void renderOrbit(double x, double y, double z, double xRadius, double yRadius, double xOffset, double yOffset) {
  		
  		GL11.glLineWidth(20/(float)(Math.pow(x - 0.5 - xOffset, 2) + Math.pow(y - 0.5 - yOffset, 2) + Math.pow(z - 0.5, 2)));
  		GL11.glBegin(GL11.GL_LINE_STRIP);
  		for(int i = 0; i < 13; i++)
  			GL11.glVertex3d(xOffset + 0.5 + xRadius*Math.cos((Math.PI*i)/6)/2.2, yOffset - 0.5 + yRadius*Math.sin((Math.PI*i)/6)/2.2, 0);
  		GL11.glEnd();
  	}
  	
  	public static void renderPositionAlongOrbit(double x, double y, double z, double xRadius, double yRadius, double phase, double xOffset, double yOffset) {
  		GL11.glPointSize(200/(float)(Math.pow(x - 0.5 - xOffset, 2) + Math.pow(y - yOffset - 0.5, 2) + Math.pow(z - 0.5, 2)));
  		GL11.glBegin(GL11.GL_POINTS);
  		
  		GL11.glVertex3d(xOffset + 0.5 + xRadius*Math.cos((Math.PI*phase)/180)/2.2, yOffset - 0.5 + yRadius*Math.sin((Math.PI*phase)/180)/2.2, 0);
  		GL11.glEnd();
  	}
  }
  