RenderExample.java

package eu.thog92.isbrh.example;

import eu.thog92.isbrh.ISBRH;
import eu.thog92.isbrh.render.ISimpleBlockRenderingHandler;
import eu.thog92.isbrh.render.SimpleBlockRender;
import eu.thog92.isbrh.render.TextureLoader;
import net.minecraft.block.Block;
import net.minecraft.block.state.IBlockState;
import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.client.renderer.WorldRenderer;
import net.minecraft.client.renderer.block.model.ItemCameraTransforms.TransformType;
import net.minecraft.client.renderer.texture.TextureAtlasSprite;
import net.minecraft.init.Blocks;
import net.minecraft.item.ItemStack;
import net.minecraft.util.BlockPos;
import net.minecraft.util.EnumFacing;
import net.minecraft.world.IBlockAccess;

public class RenderExample implements ISimpleBlockRenderingHandler {


    @Override
    public void renderInventoryBlock(ItemStack itemStack,
                                     TransformType transformType, int renderId) {
        
        BlockExample block = (BlockExample) Block.getBlockFromItem(itemStack.getItem());
        
        Tessellator tessellator = Tessellator.getInstance();
        SimpleBlockRender render = new SimpleBlockRender();
        render.worldRenderer = tessellator.getWorldRenderer();
        render.setRenderBounds(0.2F, 0.0F, 0.2F, 0.8F, 0.1F, 0.8F);
        this.renderInInventory(tessellator, render, block, transformType);

        render.setRenderBounds(0.45F, 0.1F, 0.45F, 0.55F, 0.8F, 0.55F);
        this.renderInInventory(tessellator, render, block, transformType);

        render.setRenderBounds(0.0F, 0.8F, 0.0F, 1F, 0.9F, 1F);
        this.renderInInventory(tessellator, render, block, transformType);

    }

    @Override
    public boolean renderWorldBlock(IBlockAccess world, BlockPos pos,
                                    IBlockState state, int id, WorldRenderer renderer) {

        Block block = state.getBlock();
        if(!(block instanceof BlockExample)) return false;
        
        BlockExample example = (BlockExample) block;
        SimpleBlockRender render = new SimpleBlockRender();
        render.renderAllFaces = true;
        render.worldRenderer = renderer;

        render.setRenderBounds(0.2F, 0.0F, 0.2F, 0.8F, 0.1F, 0.8F);
        render.renderStandardBlock(example, pos);

        render.setRenderBounds(0.45F, 0.1F, 0.45F, 0.55F, 0.8F, 0.55F);
        render.renderStandardBlock(example, pos);

        render.setRenderBounds(0.0F, 0.8F, 0.0F, 1F, 0.9F, 1F);
        render.renderStandardBlock(example, pos);

        return true;
    }

    @Override
    public boolean shouldRender3DInInventory(int id) {
        return true;
    }

    @Override
    public int getRenderId() {
        return ISBRH.testId;
    }

    @Override
    /**
     * Used when a Enderman or a Golem hold the block
     */
    public void renderBlockBrightness(int renderId, IBlockState state,
                                      float brightness) {

        // TODO: really use the render
        Minecraft
                .getMinecraft()
                .getBlockRendererDispatcher()
                .renderBlockBrightness(Blocks.sand.getDefaultState(),
                        brightness);
    }

    @Override
    public void loadTextures(TextureLoader loader) {
    }

    @Override
    public TextureAtlasSprite getSidedTexture(IBlockState state, EnumFacing facing) {
        return null;
    }

    private void renderInInventory(Tessellator tessellator,
                                   SimpleBlockRender render, BlockExample block, TransformType transformType) {
        GlStateManager.translate(-0.5F, -0.5F, -0.5F);
        GlStateManager.pushMatrix();

        if (transformType.equals(TransformType.THIRD_PERSON)) {
            GlStateManager.scale(0.55F, 0.55F, 0.55F);
            GlStateManager.rotate(45, 1.0F, 0.0F, 0.0F);
            GlStateManager.rotate(180F, 0.0F, 0.0F, 1.0F);
            GlStateManager.translate(-1.4F, -1.9F, -1F);
        }

        render.renderInventoryStandardBlock(block, block.getDefaultState(), tessellator);
        GlStateManager.popMatrix();
        GlStateManager.translate(0.5F, 0.5F, 0.5F);
    }

}