package gregtech.common.render;

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

public class GT_RenderUtil {

    public static void renderBlockIcon(
            RenderBlocks aRenderer, Block aBlock, double aX, double aY, double aZ, IIcon aIcon, byte aSide) {
        switch (aSide) {
            case 0:
                aRenderer.renderFaceYNeg(aBlock, aX, aY, aZ, aIcon);
                return;
            case 1:
                aRenderer.renderFaceYPos(aBlock, aX, aY, aZ, aIcon);
                return;
            case 2:
                aRenderer.renderFaceZNeg(aBlock, aX, aY, aZ, aIcon);
                return;
            case 3:
                aRenderer.renderFaceZPos(aBlock, aX, aY, aZ, aIcon);
                return;
            case 4:
                aRenderer.renderFaceXNeg(aBlock, aX, aY, aZ, aIcon);
                return;
            case 5:
                aRenderer.renderFaceXPos(aBlock, aX, aY, aZ, aIcon);
                return;
        }
    }

    public static void renderItemIcon(IIcon icon, double size, double z, float nx, float ny, float nz) {
        renderItemIcon(icon, 0.0D, 0.0D, size, size, z, nx, ny, nz);
    }

    public static void renderItemIcon(
            IIcon icon,
            double xStart,
            double yStart,
            double xEnd,
            double yEnd,
            double z,
            float nx,
            float ny,
            float nz) {
        if (icon == null) {
            return;
        }
        Tessellator.instance.startDrawingQuads();
        Tessellator.instance.setNormal(nx, ny, nz);
        if (nz > 0.0F) {
            Tessellator.instance.addVertexWithUV(xStart, yStart, z, icon.getMinU(), icon.getMinV());
            Tessellator.instance.addVertexWithUV(xEnd, yStart, z, icon.getMaxU(), icon.getMinV());
            Tessellator.instance.addVertexWithUV(xEnd, yEnd, z, icon.getMaxU(), icon.getMaxV());
            Tessellator.instance.addVertexWithUV(xStart, yEnd, z, icon.getMinU(), icon.getMaxV());
        } else {
            Tessellator.instance.addVertexWithUV(xStart, yEnd, z, icon.getMinU(), icon.getMaxV());
            Tessellator.instance.addVertexWithUV(xEnd, yEnd, z, icon.getMaxU(), icon.getMaxV());
            Tessellator.instance.addVertexWithUV(xEnd, yStart, z, icon.getMaxU(), icon.getMinV());
            Tessellator.instance.addVertexWithUV(xStart, yStart, z, icon.getMinU(), icon.getMinV());
        }
        Tessellator.instance.draw();
    }
}