PipeItemRenderer.java

package buildcraft.transport.render;

import net.minecraft.block.Block;
import net.minecraft.client.renderer.RenderBlocks;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraftforge.client.IItemRenderer;

import org.lwjgl.opengl.GL11;

import buildcraft.BuildCraftTransport;
import buildcraft.core.utils.Utils;
import buildcraft.transport.ItemPipe;

public class PipeItemRenderer implements IItemRenderer {

	private void renderPipeItem(RenderBlocks render, ItemStack item, float translateX, float translateY, float translateZ) {

		// GL11.glBindTexture(GL11.GL_TEXTURE_2D, 10);
		Tessellator tessellator = Tessellator.instance;

		Block block = BuildCraftTransport.genericPipeBlock;
		int textureID = ((ItemPipe) Item.itemsList[item.itemID]).getTextureIndex();
		if (textureID > 255) {
			textureID -= 256;
		}

		block.setBlockBounds(Utils.pipeMinPos, 0.0F, Utils.pipeMinPos, Utils.pipeMaxPos, 1.0F, Utils.pipeMaxPos);
		block.setBlockBoundsForItemRender();
		render.setRenderBoundsFromBlock(block);

		GL11.glTranslatef(translateX, translateY, translateZ);
		tessellator.startDrawingQuads();
		tessellator.setNormal(0.0F, -1F, 0.0F);
		render.renderBottomFace(block, 0.0D, 0.0D, 0.0D, textureID);
		tessellator.draw();
		tessellator.startDrawingQuads();
		tessellator.setNormal(0.0F, 1.0F, 0.0F);
		render.renderTopFace(block, 0.0D, 0.0D, 0.0D, textureID);
		tessellator.draw();
		tessellator.startDrawingQuads();
		tessellator.setNormal(0.0F, 0.0F, -1F);
		render.renderEastFace(block, 0.0D, 0.0D, 0.0D, textureID);
		tessellator.draw();
		tessellator.startDrawingQuads();
		tessellator.setNormal(0.0F, 0.0F, 1.0F);
		render.renderWestFace(block, 0.0D, 0.0D, 0.0D, textureID);
		tessellator.draw();
		tessellator.startDrawingQuads();
		tessellator.setNormal(-1F, 0.0F, 0.0F);
		render.renderNorthFace(block, 0.0D, 0.0D, 0.0D, textureID);
		tessellator.draw();
		tessellator.startDrawingQuads();
		tessellator.setNormal(1.0F, 0.0F, 0.0F);
		render.renderSouthFace(block, 0.0D, 0.0D, 0.0D, textureID);
		tessellator.draw();
		GL11.glTranslatef(0.5F, 0.5F, 0.5F);
		block.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
	}

	/** IItemRenderer implementation **/

	@Override
	public boolean handleRenderType(ItemStack item, ItemRenderType type) {
		switch (type) {
		case ENTITY:
			return true;
		case EQUIPPED:
			return true;
		case INVENTORY:
			return true;
		default:
			return false;
		}
	}

	@Override
	public boolean shouldUseRenderHelper(ItemRenderType type, ItemStack item, ItemRendererHelper helper) {
		return true;
	}

	@Override
	public void renderItem(ItemRenderType type, ItemStack item, Object... data) {
		switch (type) {
		case ENTITY:
			renderPipeItem((RenderBlocks) data[0], item, -0.5f, -0.5f, -0.5f);
			break;
		case EQUIPPED:
			renderPipeItem((RenderBlocks) data[0], item, -0.4f, 0.50f, 0.35f);
			break;
		case INVENTORY:
			renderPipeItem((RenderBlocks) data[0], item, -0.5f, -0.5f, -0.5f);
			break;
		default:
		}
	}

}