Utilities created during an attempt at signs

- Cuboids can be inverted across Y and Z
 - TransformStack scaling
 - VecBuffer coloring

src/main/java/com/jozufozu/flywheel/backend/gl/buffer/VecBuffer.java

@@ -89,6 +89,14 @@ public class VecBuffer {
 		return this;
 	}
 
+	public VecBuffer putColor(int r, int g, int b, int a) {
+		internal.put((byte) r);
+		internal.put((byte) g);
+		internal.put((byte) b);
+		internal.put((byte) a);
+		return this;
+	}
+
 	public VecBuffer putVec3(float x, float y, float z) {
 		internal.putFloat(x);
 		internal.putFloat(y);

src/main/java/com/jozufozu/flywheel/core/model/PartBuilder.java

@@ -84,6 +84,8 @@ public class PartBuilder {
 		float posY2;
 		float posZ2;
 
+		boolean invertYZ;
+
 		final PartBuilder partBuilder;
 
 		CuboidBuilder(PartBuilder partBuilder) {
@@ -123,6 +125,16 @@ public class PartBuilder {
 			return this;
 		}
 
+		/**
+		 * Pulls the cuboid "inside out" through the Y and Z axes.
+		 *
+		 * See the {@link com.jozufozu.flywheel.vanilla.SignInstance sign} renderer for the use case.
+		 */
+		public CuboidBuilder invertYZ() {
+			this.invertYZ = true;
+			return this;
+		}
+
 		public PartBuilder endCuboid() {
 			return partBuilder.addCuboid(this);
 		}
@@ -137,14 +149,21 @@ public class PartBuilder {
 			float sizeY = posY2 - posY1;
 			float sizeZ = posZ2 - posZ1;
 
-			Vector3f lll = new Vector3f(posX1 / 16f, posY1 / 16f, posZ1 / 16f);
+			float posX1 = this.posX1 / 16f;
-			Vector3f hll = new Vector3f(posX2 / 16f, posY1 / 16f, posZ1 / 16f);
+			float posY1 = this.posY1 / 16f;
-			Vector3f hhl = new Vector3f(posX2 / 16f, posY2 / 16f, posZ1 / 16f);
+			float posZ1 = this.posZ1 / 16f;
-			Vector3f lhl = new Vector3f(posX1 / 16f, posY2 / 16f, posZ1 / 16f);
+			float posX2 = this.posX2 / 16f;
-			Vector3f llh = new Vector3f(posX1 / 16f, posY1 / 16f, posZ2 / 16f);
+			float posY2 = this.posY2 / 16f;
-			Vector3f hlh = new Vector3f(posX2 / 16f, posY1 / 16f, posZ2 / 16f);
+			float posZ2 = this.posZ2 / 16f;
-			Vector3f hhh = new Vector3f(posX2 / 16f, posY2 / 16f, posZ2 / 16f);
+
-			Vector3f lhh = new Vector3f(posX1 / 16f, posY2 / 16f, posZ2 / 16f);
+			Vector3f lll = new Vector3f(posX1, posY1, posZ1);
+			Vector3f hll = new Vector3f(posX2, posY1, posZ1);
+			Vector3f hhl = new Vector3f(posX2, posY2, posZ1);
+			Vector3f lhl = new Vector3f(posX1, posY2, posZ1);
+			Vector3f llh = new Vector3f(posX1, posY1, posZ2);
+			Vector3f hlh = new Vector3f(posX2, posY1, posZ2);
+			Vector3f hhh = new Vector3f(posX2, posY2, posZ2);
+			Vector3f lhh = new Vector3f(posX1, posY2, posZ2);
 			float f4 = getU((float)textureOffsetU);
 			float f5 = getU((float)textureOffsetU + sizeZ);
 			float f6 = getU((float)textureOffsetU + sizeZ + sizeX);
@@ -155,6 +174,14 @@ public class PartBuilder {
 			float f11 = getV((float)textureOffsetV + sizeZ);
 			float f12 = getV((float)textureOffsetV + sizeZ + sizeY);
 
+			if (invertYZ) {
+				quad(buffer, new Vector3f[]{hlh, llh, lll, hll}, f6, f11, f7, f10, Direction.DOWN);
+				quad(buffer, new Vector3f[]{hhl, lhl, lhh, hhh}, f5, f10, f6, f11, Direction.UP);
+				quad(buffer, new Vector3f[]{lll, llh, lhh, lhl}, f5, f12, f4, f11, Direction.WEST);
+				quad(buffer, new Vector3f[]{hll, lll, lhl, hhl}, f9, f12, f8, f11, Direction.NORTH);
+				quad(buffer, new Vector3f[]{hlh, hll, hhl, hhh}, f8, f12, f6, f11, Direction.EAST);
+				quad(buffer, new Vector3f[]{llh, hlh, hhh, lhh}, f6, f12, f5, f11, Direction.SOUTH);
+			} else {
 				quad(buffer, new Vector3f[]{hlh, llh, lll, hll}, f5, f10, f6, f11, Direction.DOWN);
 				quad(buffer, new Vector3f[]{hhl, lhl, lhh, hhh}, f6, f11, f7, f10, Direction.UP);
 				quad(buffer, new Vector3f[]{lll, llh, lhh, lhl}, f4, f11, f5, f12, Direction.WEST);
@@ -162,6 +189,7 @@ public class PartBuilder {
 				quad(buffer, new Vector3f[]{hlh, hll, hhl, hhh}, f6, f11, f8, f12, Direction.EAST);
 				quad(buffer, new Vector3f[]{llh, hlh, hhh, lhh}, f8, f11, f9, f12, Direction.SOUTH);
 			}
+		}
 
 
 		public void quad(VecBuffer buffer, Vector3f[] vertices, float minU, float minV, float maxU, float maxV, Direction dir) {

src/main/java/com/jozufozu/flywheel/util/RenderUtil.java

@@ -10,6 +10,20 @@ import net.minecraft.util.math.vector.Matrix4f;
 import net.minecraft.util.math.vector.Vector3f;
 
 public class RenderUtil {
+
+	private static final Matrix4f IDENTITY = new Matrix4f();
+	static {
+		IDENTITY.setIdentity();
+	}
+
+	public static Matrix4f getIdentity() {
+		return IDENTITY;
+	}
+
+	public static Matrix4f copyIdentity() {
+		return IDENTITY.copy();
+	}
+
 	public static int nextPowerOf2(int a) {
 		int h = Integer.highestOneBit(a);
 		return (h == a) ? h : (h << 1);

src/main/java/com/jozufozu/flywheel/util/transform/MatrixTransformStack.java

@@ -24,13 +24,21 @@ public class MatrixTransformStack implements TransformStack {
 		return this;
 	}
 
+	@Override
+	public TransformStack scale(float factor) {
+		internal.scale(factor, factor, factor);
+		return this;
+	}
+
 	@Override
 	public TransformStack push() {
+		internal.pushPose();
 		return this;
 	}
 
 	@Override
 	public TransformStack pop() {
+		internal.popPose();
 		return this;
 	}
 }

src/main/java/com/jozufozu/flywheel/util/transform/QuaternionTransformStack.java

@@ -41,6 +41,11 @@ public class QuaternionTransformStack implements TransformStack {
 		return this;
 	}
 
+	@Override
+	public TransformStack scale(float factor) {
+		return this;
+	}
+
 	@Override
 	public TransformStack pop() {
 

src/main/java/com/jozufozu/flywheel/util/transform/TransformStack.java

@@ -13,6 +13,8 @@ public interface TransformStack {
 
 	TransformStack multiply(Quaternion quaternion);
 
+	TransformStack scale(float factor);
+
 	TransformStack push();
 
 	TransformStack pop();

src/main/java/com/jozufozu/flywheel/vanilla/VanillaInstances.java

@@ -7,21 +7,21 @@ import net.minecraft.tileentity.TileEntityType;
 /**
  * TODO:
  * <table>
+ * 		<tr><td>{@link TileEntityType#SHULKER_BOX}</td><td> {@link net.minecraft.client.renderer.tileentity.ShulkerBoxTileEntityRenderer ShulkerBoxTileEntityRenderer}</td></tr>
  * 		<tr><td>{@link TileEntityType#SIGN}</td><td> {@link net.minecraft.client.renderer.tileentity.SignTileEntityRenderer SignTileEntityRenderer}</td></tr>
- * 		<tr><td>{@link TileEntityType#MOB_SPAWNER}</td><td> {@link net.minecraft.client.renderer.tileentity.MobSpawnerTileEntityRenderer MobSpawnerTileEntityRenderer}</td></tr>
  * 		<tr><td>{@link TileEntityType#PISTON}</td><td> {@link net.minecraft.client.renderer.tileentity.PistonTileEntityRenderer PistonTileEntityRenderer}</td></tr>
+ * 		<tr><td>{@link TileEntityType#CONDUIT}</td><td> {@link net.minecraft.client.renderer.tileentity.ConduitTileEntityRenderer ConduitTileEntityRenderer}</td></tr>
  * 		<tr><td>{@link TileEntityType#ENCHANTING_TABLE}</td><td> {@link net.minecraft.client.renderer.tileentity.EnchantmentTableTileEntityRenderer EnchantmentTableTileEntityRenderer}</td></tr>
  * 		<tr><td>{@link TileEntityType#LECTERN}</td><td> {@link net.minecraft.client.renderer.tileentity.LecternTileEntityRenderer LecternTileEntityRenderer}</td></tr>
+ * 		<tr><td>{@link TileEntityType#MOB_SPAWNER}</td><td> {@link net.minecraft.client.renderer.tileentity.MobSpawnerTileEntityRenderer MobSpawnerTileEntityRenderer}</td></tr>
+ * 		<tr><td>^^ Interesting - Major vv</td></tr>
  * 		<tr><td>{@link TileEntityType#END_PORTAL}</td><td> {@link net.minecraft.client.renderer.tileentity.EndPortalTileEntityRenderer EndPortalTileEntityRenderer}</td></tr>
  * 		<tr><td>{@link TileEntityType#END_GATEWAY}</td><td> {@link net.minecraft.client.renderer.tileentity.EndGatewayTileEntityRenderer EndGatewayTileEntityRenderer}</td></tr>
  * 		<tr><td>{@link TileEntityType#BEACON}</td><td> {@link net.minecraft.client.renderer.tileentity.BeaconTileEntityRenderer BeaconTileEntityRenderer}</td></tr>
  * 		<tr><td>{@link TileEntityType#SKULL}</td><td> {@link net.minecraft.client.renderer.tileentity.SkullTileEntityRenderer SkullTileEntityRenderer}</td></tr>
  * 		<tr><td>{@link TileEntityType#BANNER}</td><td> {@link net.minecraft.client.renderer.tileentity.BannerTileEntityRenderer BannerTileEntityRenderer}</td></tr>
  * 		<tr><td>{@link TileEntityType#STRUCTURE_BLOCK}</td><td> {@link net.minecraft.client.renderer.tileentity.StructureTileEntityRenderer StructureTileEntityRenderer}</td></tr>
- * 		<tr><td>{@link TileEntityType#SHULKER_BOX}</td><td> {@link net.minecraft.client.renderer.tileentity.ShulkerBoxTileEntityRenderer ShulkerBoxTileEntityRenderer}</td></tr>
  * 		<tr><td>{@link TileEntityType#BED}</td><td> {@link net.minecraft.client.renderer.tileentity.BedTileEntityRenderer BedTileEntityRenderer}</td></tr>
- * 		<tr><td>{@link TileEntityType#CONDUIT}</td><td> {@link net.minecraft.client.renderer.tileentity.ConduitTileEntityRenderer ConduitTileEntityRenderer}</td></tr>
- * 		<tr><td>{@link TileEntityType#BELL}</td><td> {@link net.minecraft.client.renderer.tileentity.BellTileEntityRenderer BellTileEntityRenderer}</td></tr>
  * 		<tr><td>{@link TileEntityType#CAMPFIRE}</td><td> {@link net.minecraft.client.renderer.tileentity.CampfireTileEntityRenderer CampfireTileEntityRenderer}</td></tr>
  * </table>
  */