Chisel/src/main/java/com/cricketcraft/chisel/client/render/BlockRoadLineRenderer.java

package com.cricketcraft.chisel.client.render;

import net.minecraft.block.Block;
import net.minecraft.client.renderer.EntityRenderer;
import net.minecraft.client.renderer.RenderBlocks;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.util.IIcon;
import net.minecraft.world.IBlockAccess;

import com.cricketcraft.chisel.block.BlockRoadLine;
import com.cricketcraft.chisel.utils.Drawing;

import cpw.mods.fml.client.registry.ISimpleBlockRenderingHandler;
import cpw.mods.fml.client.registry.RenderingRegistry;

public class BlockRoadLineRenderer implements ISimpleBlockRenderingHandler {

	public static int id;

	public BlockRoadLineRenderer() {
		id = RenderingRegistry.getNextAvailableRenderId();
	}

	@Override
	public void renderInventoryBlock(Block block, int meta, int modelID, RenderBlocks renderer) {
		renderer.setRenderBoundsFromBlock(block);
		Drawing.drawBlock(block, meta, renderer);
	}

	public void renderTopFace(double y, IIcon icon) {
		Tessellator tessellator = Tessellator.instance;

		tessellator.addVertexWithUV(1, y, 0, icon.getMaxU(), icon.getMinV());
		tessellator.addVertexWithUV(0, y, 0, icon.getMinU(), icon.getMinV());
		tessellator.addVertexWithUV(0, y, 1, icon.getMinU(), icon.getMaxV());
		tessellator.addVertexWithUV(1, y, 1, icon.getMaxU(), icon.getMaxV());
	}

	@Override
	public boolean renderWorldBlock(IBlockAccess world, int x, int y, int z, Block b, int modelId, RenderBlocks renderer) {
		int meta = world.getBlockMetadata(x, y, z);
		BlockRoadLine block = (BlockRoadLine) b;
		Tessellator tessellator = Tessellator.instance;

		tessellator.setBrightness(block.getMixedBrightnessForBlock(world, x, y, z));

		float f = 1.0F;
		int i1 = block.colorMultiplier(world, x, y, z);
		float f1 = (i1 >> 16 & 255) / 255.0F;
		float f2 = (i1 >> 8 & 255) / 255.0F;
		float f3 = (i1 & 255) / 255.0F;

		if (EntityRenderer.anaglyphEnable) {
			float f4 = (f1 * 30.0F + f2 * 59.0F + f3 * 11.0F) / 100.0F;
			float f5 = (f1 * 30.0F + f2 * 70.0F) / 100.0F;
			float f6 = (f1 * 30.0F + f3 * 70.0F) / 100.0F;
			f1 = f4;
			f2 = f5;
			f3 = f6;
		}
		tessellator.setColorOpaque_F(f * f1, f * f2, f * f3);

		boolean N = world.getBlock(x, y, z - 1).equals(block);
		boolean S = world.getBlock(x, y, z + 1).equals(block);
		boolean W = world.getBlock(x - 1, y, z).equals(block);
		boolean E = world.getBlock(x + 1, y, z).equals(block);

		if (!N && !S && !W && !E) {
			renderer.renderStandardBlock(block, x, y, z);
			return true;
		}

		if (N && S) {
			renderer.uvRotateTop = 0;
			renderer.overrideBlockTexture = block.fullLineIcon;
			renderer.renderStandardBlock(block, x, y, z);

		} else {
			if (N) {
				renderer.uvRotateTop = 0;
				renderer.overrideBlockTexture = block.halfLineIcon;
				renderer.renderStandardBlock(block, x, y, z);
			}
			if (S) {
				renderer.uvRotateTop = 3;
				renderer.overrideBlockTexture = block.halfLineIcon;
				renderer.renderStandardBlock(block, x, y, z);
			}

		}

		if (E && W) {
			renderer.uvRotateTop = 1;
			renderer.overrideBlockTexture = block.fullLineIcon;
			renderer.renderStandardBlock(block, x, y, z);
		} else {
			if (E) {
				renderer.uvRotateTop = 1;
				renderer.overrideBlockTexture = block.halfLineIcon;
				renderer.renderStandardBlock(block, x, y, z);
			}
			if (W) {
				renderer.uvRotateTop = 2;
				renderer.overrideBlockTexture = block.halfLineIcon;
				renderer.renderStandardBlock(block, x, y, z);
			}
		}

		renderer.uvRotateTop = 0;
		renderer.overrideBlockTexture = null;
		return true;
	}

	@Override
	public boolean shouldRender3DInInventory(int renderId) {
		return false;
	}

	@Override
	public int getRenderId() {
		return id;
	}
}