package net.minecraft.client.renderer.tileentity;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import java.nio.FloatBuffer;
import java.util.Random;
import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.ActiveRenderInfo;
import net.minecraft.client.renderer.GLAllocation;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.tileentity.TileEntityEndPortal;
import net.minecraft.util.ResourceLocation;
import org.lwjgl.opengl.GL11;

@SideOnly(Side.CLIENT)
public class RenderEndPortal extends TileEntitySpecialRenderer
{
	private static final ResourceLocation field_147529_c = new ResourceLocation("textures/environment/end_sky.png");
	private static final ResourceLocation field_147526_d = new ResourceLocation("textures/entity/end_portal.png");
	private static final Random field_147527_e = new Random(31100L);
	FloatBuffer field_147528_b = GLAllocation.createDirectFloatBuffer(16);
	private static final String __OBFID = "CL_00000972";

	public void renderTileEntityAt(TileEntityEndPortal p_147524_1_, double p_147524_2_, double p_147524_4_, double p_147524_6_, float p_147524_8_)
	{
		float f1 = (float)this.field_147501_a.field_147560_j;
		float f2 = (float)this.field_147501_a.field_147561_k;
		float f3 = (float)this.field_147501_a.field_147558_l;
		GL11.glDisable(GL11.GL_LIGHTING);
		field_147527_e.setSeed(31100L);
		float f4 = 0.75F;

		for (int i = 0; i < 16; ++i)
		{
			GL11.glPushMatrix();
			float f5 = (float)(16 - i);
			float f6 = 0.0625F;
			float f7 = 1.0F / (f5 + 1.0F);

			if (i == 0)
			{
				this.bindTexture(field_147529_c);
				f7 = 0.1F;
				f5 = 65.0F;
				f6 = 0.125F;
				GL11.glEnable(GL11.GL_BLEND);
				GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
			}

			if (i == 1)
			{
				this.bindTexture(field_147526_d);
				GL11.glEnable(GL11.GL_BLEND);
				GL11.glBlendFunc(GL11.GL_ONE, GL11.GL_ONE);
				f6 = 0.5F;
			}

			float f8 = (float)(-(p_147524_4_ + (double)f4));
			float f9 = f8 + ActiveRenderInfo.objectY;
			float f10 = f8 + f5 + ActiveRenderInfo.objectY;
			float f11 = f9 / f10;
			f11 += (float)(p_147524_4_ + (double)f4);
			GL11.glTranslatef(f1, f11, f3);
			GL11.glTexGeni(GL11.GL_S, GL11.GL_TEXTURE_GEN_MODE, GL11.GL_OBJECT_LINEAR);
			GL11.glTexGeni(GL11.GL_T, GL11.GL_TEXTURE_GEN_MODE, GL11.GL_OBJECT_LINEAR);
			GL11.glTexGeni(GL11.GL_R, GL11.GL_TEXTURE_GEN_MODE, GL11.GL_OBJECT_LINEAR);
			GL11.glTexGeni(GL11.GL_Q, GL11.GL_TEXTURE_GEN_MODE, GL11.GL_EYE_LINEAR);
			GL11.glTexGen(GL11.GL_S, GL11.GL_OBJECT_PLANE, this.func_147525_a(1.0F, 0.0F, 0.0F, 0.0F));
			GL11.glTexGen(GL11.GL_T, GL11.GL_OBJECT_PLANE, this.func_147525_a(0.0F, 0.0F, 1.0F, 0.0F));
			GL11.glTexGen(GL11.GL_R, GL11.GL_OBJECT_PLANE, this.func_147525_a(0.0F, 0.0F, 0.0F, 1.0F));
			GL11.glTexGen(GL11.GL_Q, GL11.GL_EYE_PLANE, this.func_147525_a(0.0F, 1.0F, 0.0F, 0.0F));
			GL11.glEnable(GL11.GL_TEXTURE_GEN_S);
			GL11.glEnable(GL11.GL_TEXTURE_GEN_T);
			GL11.glEnable(GL11.GL_TEXTURE_GEN_R);
			GL11.glEnable(GL11.GL_TEXTURE_GEN_Q);
			GL11.glPopMatrix();
			GL11.glMatrixMode(GL11.GL_TEXTURE);
			GL11.glPushMatrix();
			GL11.glLoadIdentity();
			GL11.glTranslatef(0.0F, (float)(Minecraft.getSystemTime() % 700000L) / 700000.0F, 0.0F);
			GL11.glScalef(f6, f6, f6);
			GL11.glTranslatef(0.5F, 0.5F, 0.0F);
			GL11.glRotatef((float)(i * i * 4321 + i * 9) * 2.0F, 0.0F, 0.0F, 1.0F);
			GL11.glTranslatef(-0.5F, -0.5F, 0.0F);
			GL11.glTranslatef(-f1, -f3, -f2);
			f9 = f8 + ActiveRenderInfo.objectY;
			GL11.glTranslatef(ActiveRenderInfo.objectX * f5 / f9, ActiveRenderInfo.objectZ * f5 / f9, -f2);
			Tessellator tessellator = Tessellator.instance;
			tessellator.startDrawingQuads();
			f11 = field_147527_e.nextFloat() * 0.5F + 0.1F;
			float f12 = field_147527_e.nextFloat() * 0.5F + 0.4F;
			float f13 = field_147527_e.nextFloat() * 0.5F + 0.5F;

			if (i == 0)
			{
				f13 = 1.0F;
				f12 = 1.0F;
				f11 = 1.0F;
			}

			tessellator.setColorRGBA_F(f11 * f7, f12 * f7, f13 * f7, 1.0F);
			tessellator.addVertex(p_147524_2_, p_147524_4_ + (double)f4, p_147524_6_);
			tessellator.addVertex(p_147524_2_, p_147524_4_ + (double)f4, p_147524_6_ + 1.0D);
			tessellator.addVertex(p_147524_2_ + 1.0D, p_147524_4_ + (double)f4, p_147524_6_ + 1.0D);
			tessellator.addVertex(p_147524_2_ + 1.0D, p_147524_4_ + (double)f4, p_147524_6_);
			tessellator.draw();
			GL11.glPopMatrix();
			GL11.glMatrixMode(GL11.GL_MODELVIEW);
		}

		GL11.glDisable(GL11.GL_BLEND);
		GL11.glDisable(GL11.GL_TEXTURE_GEN_S);
		GL11.glDisable(GL11.GL_TEXTURE_GEN_T);
		GL11.glDisable(GL11.GL_TEXTURE_GEN_R);
		GL11.glDisable(GL11.GL_TEXTURE_GEN_Q);
		GL11.glEnable(GL11.GL_LIGHTING);
	}

	private FloatBuffer func_147525_a(float p_147525_1_, float p_147525_2_, float p_147525_3_, float p_147525_4_)
	{
		this.field_147528_b.clear();
		this.field_147528_b.put(p_147525_1_).put(p_147525_2_).put(p_147525_3_).put(p_147525_4_);
		this.field_147528_b.flip();
		return this.field_147528_b;
	}

	public void renderTileEntityAt(TileEntity p_147500_1_, double p_147500_2_, double p_147500_4_, double p_147500_6_, float p_147500_8_)
	{
		this.renderTileEntityAt((TileEntityEndPortal)p_147500_1_, p_147500_2_, p_147500_4_, p_147500_6_, p_147500_8_);
	}
}