GT5-Unofficial/src/main/java/gregtech/api/objects/GT_RenderedTexture.java

package gregtech.api.objects;

import gregtech.api.enums.Dyes;
import gregtech.api.interfaces.IColorModulationContainer;
import gregtech.api.interfaces.IIconContainer;
import gregtech.api.interfaces.ITexture;
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_RenderedTexture implements ITexture, IColorModulationContainer {
	private final IIconContainer mIconContainer;
	
	/**
	 *  DO NOT MANIPULATE THE VALUES INSIDE THIS ARRAY!!!
	 *  
	 *  Just set this variable to another different Array instead.
	 *  Otherwise some colored things will get Problems.
	 */
	public short[] mRGBa;
	
	private final boolean mAllowAlpha;
	
	public GT_RenderedTexture(IIconContainer aIcon, short[] aRGBa, boolean aAllowAlpha) {
		if (aRGBa.length != 4) throw new IllegalArgumentException("RGBa doesn't have 4 Values @ GT_RenderedTexture");
		mIconContainer = aIcon;
		mAllowAlpha = aAllowAlpha;
		mRGBa = aRGBa;
	}
	
	public GT_RenderedTexture(IIconContainer aIcon, short[] aRGBa) {
		this(aIcon, aRGBa, true);
	}
	
	public GT_RenderedTexture(IIconContainer aIcon) {
		this(aIcon, Dyes._NULL.mRGBa);
	}
	
	@Override
	public void renderXPos(RenderBlocks aRenderer, Block aBlock, int aX, int aY, int aZ) {
		Tessellator.instance.setColorRGBA((int)(mRGBa[0] * 0.6F), (int)(mRGBa[1] * 0.6F), (int)(mRGBa[2] * 0.6F), mAllowAlpha?255-mRGBa[3]:255);
    	aRenderer.renderFaceXPos(aBlock, aX, aY, aZ, mIconContainer.getIcon());
    	if (mIconContainer.getOverlayIcon() != null) {
        	Tessellator.instance.setColorRGBA(153, 153, 153, 255);
        	aRenderer.renderFaceXPos(aBlock, aX, aY, aZ, mIconContainer.getOverlayIcon());
    	}
	}
	
	@Override
	public void renderXNeg(RenderBlocks aRenderer, Block aBlock, int aX, int aY, int aZ) {
		Tessellator.instance.setColorRGBA((int)(mRGBa[0] * 0.6F), (int)(mRGBa[1] * 0.6F), (int)(mRGBa[2] * 0.6F), mAllowAlpha?255-mRGBa[3]:255);
    	aRenderer.renderFaceXNeg(aBlock, aX, aY, aZ, mIconContainer.getIcon());
    	if (mIconContainer.getOverlayIcon() != null) {
        	Tessellator.instance.setColorRGBA(153, 153, 153, 255);
        	aRenderer.renderFaceXNeg(aBlock, aX, aY, aZ, mIconContainer.getOverlayIcon());
    	}
	}
	
	@Override
	public void renderYPos(RenderBlocks aRenderer, Block aBlock, int aX, int aY, int aZ) {
		Tessellator.instance.setColorRGBA((int)(mRGBa[0] * 1.0F), (int)(mRGBa[1] * 1.0F), (int)(mRGBa[2] * 1.0F), mAllowAlpha?255-mRGBa[3]:255);
    	aRenderer.renderFaceYPos(aBlock, aX, aY, aZ, mIconContainer.getIcon());
    	if (mIconContainer.getOverlayIcon() != null) {
        	Tessellator.instance.setColorRGBA(255, 255, 255, 255);
        	aRenderer.renderFaceYPos(aBlock, aX, aY, aZ, mIconContainer.getOverlayIcon());
    	}
	}
	
	@Override
	public void renderYNeg(RenderBlocks aRenderer, Block aBlock, int aX, int aY, int aZ) {
		Tessellator.instance.setColorRGBA((int)(mRGBa[0] * 0.5F), (int)(mRGBa[1] * 0.5F), (int)(mRGBa[2] * 0.5F), mAllowAlpha?255-mRGBa[3]:255);
    	IIcon aIcon = mIconContainer.getIcon();
    	
        double d3 = aIcon.getInterpolatedU(aRenderer.renderMaxX * 16.0D);
        double d4 = aIcon.getInterpolatedU(aRenderer.renderMinX * 16.0D);
        double d5 = aIcon.getInterpolatedV(aRenderer.renderMinZ * 16.0D);
        double d6 = aIcon.getInterpolatedV(aRenderer.renderMaxZ * 16.0D);
        
        if (aRenderer.renderMinX < 0.0D || aRenderer.renderMaxX > 1.0D) {
            d3 = aIcon.getMaxU();
            d4 = aIcon.getMinU();
        }
        
        if (aRenderer.renderMinZ < 0.0D || aRenderer.renderMaxZ > 1.0D) {
            d5 = aIcon.getMinV();
            d6 = aIcon.getMaxV();
        }
        
        double d11 = aX + aRenderer.renderMinX;
        double d12 = aX + aRenderer.renderMaxX;
        double d13 = aY + aRenderer.renderMinY;
        double d14 = aZ + aRenderer.renderMinZ;
        double d15 = aZ + aRenderer.renderMaxZ;
        
        Tessellator.instance.addVertexWithUV(d11, d13, d15, d3, d6);
        Tessellator.instance.addVertexWithUV(d11, d13, d14, d3, d5);
        Tessellator.instance.addVertexWithUV(d12, d13, d14, d4, d5);
        Tessellator.instance.addVertexWithUV(d12, d13, d15, d4, d6);

    	if ((aIcon = mIconContainer.getOverlayIcon()) != null) {
        	Tessellator.instance.setColorRGBA(128, 128, 128, 255);
        	
            Tessellator.instance.addVertexWithUV(d11, d13, d15, d3, d6);
            Tessellator.instance.addVertexWithUV(d11, d13, d14, d3, d5);
            Tessellator.instance.addVertexWithUV(d12, d13, d14, d4, d5);
            Tessellator.instance.addVertexWithUV(d12, d13, d15, d4, d6);
    	}
	}
	
	@Override
	public void renderZPos(RenderBlocks aRenderer, Block aBlock, int aX, int aY, int aZ) {
		Tessellator.instance.setColorRGBA((int)(mRGBa[0] * 0.8F), (int)(mRGBa[1] * 0.8F), (int)(mRGBa[2] * 0.8F), mAllowAlpha?255-mRGBa[3]:255);
    	aRenderer.renderFaceZPos(aBlock, aX, aY, aZ, mIconContainer.getIcon());
    	if (mIconContainer.getOverlayIcon() != null) {
        	Tessellator.instance.setColorRGBA(204, 204, 204, 255);
        	aRenderer.renderFaceZPos(aBlock, aX, aY, aZ, mIconContainer.getOverlayIcon());
    	}
	}
	
	@Override
	public void renderZNeg(RenderBlocks aRenderer, Block aBlock, int aX, int aY, int aZ) {
		Tessellator.instance.setColorRGBA((int)(mRGBa[0] * 0.8F), (int)(mRGBa[1] * 0.8F), (int)(mRGBa[2] * 0.8F), mAllowAlpha?255-mRGBa[3]:255);
		aRenderer.renderFaceZNeg(aBlock, aX, aY, aZ, mIconContainer.getIcon());
    	if (mIconContainer.getOverlayIcon() != null) {
        	Tessellator.instance.setColorRGBA(204, 204, 204, 255);
        	aRenderer.renderFaceZNeg(aBlock, aX, aY, aZ, mIconContainer.getOverlayIcon());
    	}
	}
	
	@Override
	public short[] getRGBA() {
		return mRGBa;
	}

	@Override
	public boolean isValidTexture() {
		return mIconContainer != null;
	}
}