rl-client: add ColorUtil/OverlayUtil

runelite-client/src/main/java/com/openosrs/client/ui/overlay/OverlayUtil.java

@@ -0,0 +1,42 @@
+package com.openosrs.client.ui.overlay;
+
+import java.awt.BasicStroke;
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.Polygon;
+import net.runelite.api.Client;
+import net.runelite.api.Perspective;
+import net.runelite.api.coords.LocalPoint;
+import net.runelite.api.coords.WorldPoint;
+
+public class OverlayUtil extends net.runelite.client.ui.overlay.OverlayUtil
+{
+	public static void drawTiles(Graphics2D graphics, Client client, WorldPoint point, WorldPoint playerPoint, Color color, int strokeWidth, int outlineAlpha, int fillAlpha)
+	{
+		if (point.distanceTo(playerPoint) >= 32)
+		{
+			return;
+		}
+		LocalPoint lp = LocalPoint.fromWorld(client, point);
+		if (lp == null)
+		{
+			return;
+		}
+
+		Polygon poly = Perspective.getCanvasTilePoly(client, lp);
+		if (poly == null)
+		{
+			return;
+		}
+		drawStrokeAndFillPoly(graphics, color, strokeWidth, outlineAlpha, fillAlpha, poly);
+	}
+
+	public static void drawStrokeAndFillPoly(Graphics2D graphics, Color color, int strokeWidth, int outlineAlpha, int fillAlpha, Polygon poly)
+	{
+		graphics.setColor(new Color(color.getRed(), color.getGreen(), color.getBlue(), outlineAlpha));
+		graphics.setStroke(new BasicStroke(strokeWidth));
+		graphics.draw(poly);
+		graphics.setColor(new Color(color.getRed(), color.getGreen(), color.getBlue(), fillAlpha));
+		graphics.fill(poly);
+	}
+}

runelite-client/src/main/java/com/openosrs/client/util/ColorUtil.java

@@ -0,0 +1,34 @@
+package com.openosrs.client.util;
+
+import java.awt.Color;
+
+public class ColorUtil extends net.runelite.client.util.ColorUtil
+{
+	/**
+	 * Modifies the alpha component on a Color
+	 *
+	 * @param color The color to set the alpha value on
+	 * @param alpha The alpha value to set on the color
+	 * @return color
+	 */
+	public static int setAlphaComponent(Color color, int alpha)
+	{
+		return setAlphaComponent(color.getRGB(), alpha);
+	}
+
+	/**
+	 * Modifies the alpha component on a Color
+	 *
+	 * @param color The color to set the alpha value on
+	 * @param alpha The alpha value to set on the color
+	 * @return color
+	 */
+	public static int setAlphaComponent(int color, int alpha)
+	{
+		if (alpha < 0 || alpha > 255)
+		{
+			throw new IllegalArgumentException("alpha must be between 0 and 255.");
+		}
+		return (color & 0x00ffffff) | (alpha << 24);
+	}
+}