TileEntityVillageHighlighterRenderer.java

package openblocks.client.renderer.tileentity;

import net.minecraft.client.renderer.Tessellator;
import net.minecraft.client.renderer.tileentity.TileEntitySpecialRenderer;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.ResourceLocation;
import openblocks.client.model.ModelVillage;
import openblocks.common.tileentity.TileEntityVillageHighlighter;
import openmods.sync.SyncableIntArray;
import openmods.utils.BlockUtils;
import org.lwjgl.opengl.GL11;

public class TileEntityVillageHighlighterRenderer extends
		TileEntitySpecialRenderer {

	private static final AxisAlignedBB BOUNDING_BOX = AxisAlignedBB.getBoundingBox(-8, -3, -8, 8, 3, 8);
	private ModelVillage model = new ModelVillage();
	private static final ResourceLocation texture = new ResourceLocation("openblocks", "textures/models/village.png");

	@Override
	public void renderTileEntityAt(TileEntity tileentity, double x, double y, double z, float f) {
		TileEntityVillageHighlighter villagehighlighter = (TileEntityVillageHighlighter)tileentity;
		GL11.glPushMatrix();
		GL11.glTranslatef((float)x + 0.5F, (float)y + 1.0f, (float)z + 0.5F);
		if (!villagehighlighter.isRenderedInInventory()
				&& villagehighlighter.isPowered()) {
			GL11.glPushMatrix();
			Tessellator t = Tessellator.instance;

			SyncableIntArray villages = villagehighlighter.getVillageData();
			int[] data = villages.getValue();
			for (int i = 0; i < data.length; i += TileEntityVillageHighlighter.VALUES_PER_VILLAGE) {
				t.startDrawing(0);
				int radius = data[i];
				int vX = data[i + 1];
				int vY = data[i + 2];
				int vZ = data[i + 3];
				int id = data[i + 6];
				GL11.glPushMatrix();
				GL11.glDisable(GL11.GL_TEXTURE_2D);
				GL11.glTranslated(vX, vY, vZ);
				int color = id % 0xFFFFFF;
				float r = (color >> 16 & 255) / 255.0F;
				float g = (color >> 8 & 255) / 255.0F;
				float b = (color & 255) / 255.0F;
				GL11.glColor4f(r, g, b, 1f);

				GL11.glPushMatrix();
				GL11.glPointSize(4.0F);
				GL11.glLineWidth(10F);
				double N = 1500;
				double ratio = Math.PI * (3 - Math.sqrt(5));
				double off = 2 / N;
				for (int j = 0; j < N; j++) {
					double py = j * off - 1 + (off / 2);
					double rad = Math.sqrt(1 - py * py);
					double phi = j * ratio;
					double px = Math.cos(phi) * rad;
					double pz = Math.sin(phi) * rad;
					t.addVertex(px * radius, py * radius, pz * radius);
				}
				t.draw();
				GL11.glPopMatrix();
				drawBox(BOUNDING_BOX);
				GL11.glEnable(GL11.GL_TEXTURE_2D);
				GL11.glPopMatrix();
			}
			GL11.glPopMatrix();
		}

		GL11.glPushMatrix();
		GL11.glColor4f(1, 1, 1, 1);
		GL11.glRotatef(180.0F, 1.0F, 0.0F, 0.0F);
		GL11.glRotatef(-BlockUtils.getRotationFromOrientation(villagehighlighter.getOrientation()), 0, 1, 0);
		bindTexture(texture);
		model.render(villagehighlighter, f);
		GL11.glPopMatrix();
		GL11.glPopMatrix();
	}

	public void drawBox(AxisAlignedBB bb) {

		Tessellator tessellator = Tessellator.instance;
		tessellator.startDrawing(3);
		tessellator.addVertex(bb.minX, bb.minY, bb.minZ);
		tessellator.addVertex(bb.maxX, bb.minY, bb.minZ);
		tessellator.addVertex(bb.maxX, bb.minY, bb.maxZ);
		tessellator.addVertex(bb.minX, bb.minY, bb.maxZ);
		tessellator.addVertex(bb.minX, bb.minY, bb.minZ);
		tessellator.draw();
		tessellator.startDrawing(3);
		tessellator.addVertex(bb.minX, bb.maxY, bb.minZ);
		tessellator.addVertex(bb.maxX, bb.maxY, bb.minZ);
		tessellator.addVertex(bb.maxX, bb.maxY, bb.maxZ);
		tessellator.addVertex(bb.minX, bb.maxY, bb.maxZ);
		tessellator.addVertex(bb.minX, bb.maxY, bb.minZ);
		tessellator.draw();
		tessellator.startDrawing(1);
		tessellator.addVertex(bb.minX, bb.minY, bb.minZ);
		tessellator.addVertex(bb.minX, bb.maxY, bb.minZ);
		tessellator.addVertex(bb.maxX, bb.minY, bb.minZ);
		tessellator.addVertex(bb.maxX, bb.maxY, bb.minZ);
		tessellator.addVertex(bb.maxX, bb.minY, bb.maxZ);
		tessellator.addVertex(bb.maxX, bb.maxY, bb.maxZ);
		tessellator.addVertex(bb.minX, bb.minY, bb.maxZ);
		tessellator.addVertex(bb.minX, bb.maxY, bb.maxZ);
		tessellator.draw();
	}

}