feat(renderer): enhance rendering with clipping area support in G2DDrawEffect

src/main/java/de/extio/game_engine/renderer/g2d/bo/rendering/G2DDrawEffect.java

@@ -3,6 +3,7 @@ package de.extio.game_engine.renderer.g2d.bo.rendering;
 import java.awt.Color;
 import java.awt.Frame;
 import java.awt.Graphics2D;
+import java.awt.Shape;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -58,6 +59,74 @@ public class G2DDrawEffect extends G2DAbstractRenderingBo implements DrawEffectR
 			}
 		}
 		
+		Shape oldClip = null;
+		Area2 intersection = null;
+		if (visibleAreaX != 0 || visibleAreaY != 0 || visibleAreaWidth != 0 || visibleAreaHeight != 0) {
+			int minX = x0;
+			int minY = y0;
+			int maxX = x0;
+			int maxY = y0;
+			if (coordinates != null && !coordinates.isEmpty()) {
+				for (final CoordI2 c : coordinates) {
+					final int px = x0 + c.getX();
+					final int py = y0 + c.getY();
+					minX = Math.min(minX, px);
+					minY = Math.min(minY, py);
+					maxX = Math.max(maxX, px);
+					maxY = Math.max(maxY, py);
+				}
+			}
+			if (this.width > 0) {
+				maxX = Math.max(maxX, x0 + this.width);
+			}
+			if (this.height > 0) {
+				maxY = Math.max(maxY, y0 + this.height);
+			}
+			
+			switch (this.effect) {
+				case CIRCLE:
+				case CIRCLE_FILLED: {
+					final int diameter = Math.max(3, (int) Math.round(this.customInt0 * scaleFactor));
+					maxX = Math.max(maxX, x0 + diameter);
+					maxY = Math.max(maxY, y0 + diameter);
+					break;
+				}
+				case CIRCLE_CENTERED:
+				case CIRCLE_CENTERED_FILLED: {
+					final int radius = Math.max(3, (int) Math.round(this.customInt0 * scaleFactor));
+					minX = Math.min(minX, x0 - radius);
+					minY = Math.min(minY, y0 - radius);
+					maxX = Math.max(maxX, x0 + radius);
+					maxY = Math.max(maxY, y0 + radius);
+					break;
+				}
+				case TEXT: {
+					if (this.customString0 != null && !this.customString0.isEmpty()) {
+						final var td = G2DDrawFont.getTextDimensions(this.customString0, graphics, (int) (this.customInt0), scaleFactor);
+						maxX = Math.max(maxX, x0 + td.getX());
+						maxY = Math.max(maxY, y0 + td.getY());
+					}
+					break;
+				}
+				default:
+					break;
+			}
+			
+			final int blockX = minX;
+			final int blockY = minY;
+			final int blockW = Math.max(1, maxX - minX);
+			final int blockH = Math.max(1, maxY - minY);
+			final var controlArea = new Area2(ImmutableCoordI2.create(blockX, blockY), ImmutableCoordI2.create(blockW, blockH));
+			final var visibleArea = new Area2(ImmutableCoordI2.create((int) (this.visibleAreaX * scaleFactor), (int) (this.visibleAreaY * scaleFactor)), ImmutableCoordI2.create((int) (this.visibleAreaWidth * scaleFactor), (int) (this.visibleAreaHeight * scaleFactor)));
+			intersection = SpatialUtils2.intersectAreas(controlArea, visibleArea);
+			if (intersection == null) {
+				return;
+			}
+			oldClip = graphics.getClip();
+			graphics.setClip(intersection.getPosition().getX(), intersection.getPosition().getY(), intersection.getDimension().getX(), intersection.getDimension().getY());
+		}
+		
+		try {
 			switch (this.effect) {
 				case LINE: {
 					if (coordinates == null || coordinates.isEmpty()) {
@@ -220,11 +289,12 @@ public class G2DDrawEffect extends G2DAbstractRenderingBo implements DrawEffectR
 					final var theme = themeManager.getCurrentTheme();
 					final PatternRenderer patternRenderer = themeManager.getPatternRenderer(theme.getPatternRendererName());
 					final var strength = this.customInt0 <= 0 ? 2 : this.customInt0;
-				final var effectColor = this.color == null ? theme.getBorderOuter().toColor() : this.color.toAwtColor();
+					final var effectColor = this.color == null ? theme.getBorderInner().toColor() : this.color.toAwtColor();
 					if (patternRenderer != null) {
 						if (this.effect == DrawEffectRenderingBoEffects.DECORATIVE_BORDER) {
 							patternRenderer.drawDecorativeBorder(graphics, area.getPosition().getX(), area.getPosition().getY(), area.getDimension().getX(), area.getDimension().getY(), strength, effectColor);
-					} else {
+						}
+						else {
 							patternRenderer.drawDecorativeBorderFilled(graphics, area.getPosition().getX(), area.getPosition().getY(), area.getDimension().getX(), area.getDimension().getY(), strength, effectColor, theme.getWindowBackground().toColor());
 						}
 					}
@@ -245,6 +315,10 @@ public class G2DDrawEffect extends G2DAbstractRenderingBo implements DrawEffectR
 					throw new UnsupportedOperationException("Effect not implemented: " + this.effect.toString());
 			}
 		}
+		finally {
+			graphics.setClip(oldClip);
+		}
+	}
 	
 	private boolean cull(final Area2 area) {
 		final Frame mainFrame = ((G2DRenderer) this.rendererData.getRenderer()).getMainFrame();
@@ -270,7 +344,8 @@ public class G2DDrawEffect extends G2DAbstractRenderingBo implements DrawEffectR
 			this.effect = o.effect;
 			if (o.relativeCoordinates != null) {
 				this.relativeCoordinates = List.copyOf(o.relativeCoordinates);
-			} else {
+			}
+			else {
 				this.relativeCoordinates = null;
 			}
 			this.customInt0 = o.customInt0;