Improved submodule rendering

[Mograsim.git] / net.mograsim.logic.ui / src / net / mograsim / logic / ui / model / components / SubmodelComponent.java

diff --git a/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/components/SubmodelComponent.java b/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/components/SubmodelComponent.java
index 9b0e41a..eae636a 100644 (file)
--- a/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/components/SubmodelComponent.java
+++ b/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/components/SubmodelComponent.java
@@ -25,6 +25,8 @@ public class SubmodelComponent extends GUIComponent
        private final SubmodelInterface submodelInterface;
 
        private double submodelScale;
+       private double maxVisibleRegionFillRatioForAlpha0;
+       private double minVisibleRegionFillRatioForAlpha1;
        private final LogicUIRenderer renderer;
 
        public SubmodelComponent(ViewModelModifiable model)
@@ -39,6 +41,8 @@ public class SubmodelComponent extends GUIComponent
                this.submodelInterface = new SubmodelInterface(submodelModifiable);
 
                this.submodelScale = 1;
+               this.maxVisibleRegionFillRatioForAlpha0 = 0.1;
+               this.minVisibleRegionFillRatioForAlpha1 = 0.8;
                this.renderer = new LogicUIRenderer(submodelModifiable);
 
                submodelModifiable.addRedrawListener(this::requestRedraw);
@@ -134,12 +138,22 @@ public class SubmodelComponent extends GUIComponent
                GCDefaultConfig conf = new GCDefaultConfig(gc);
                TranslatedGC tgc = new TranslatedGC(gc, posX, posY, submodelScale, true);
                conf.reset(tgc);
+               double visibleRegionFillRatio = Math.max(getBounds().width / visibleRegion.width, getBounds().height / visibleRegion.height);
+               double alphaFactor = map(visibleRegionFillRatio, maxVisibleRegionFillRatioForAlpha0, minVisibleRegionFillRatioForAlpha1, 0, 1);
+               alphaFactor = Math.max(0, Math.min(1, alphaFactor));
+               // we need to take the old alpha into account to support nested submodules better.
+               gc.setAlpha(Math.max(0, Math.min(255, (int) (gc.getAlpha() * alphaFactor))));
                renderer.render(tgc, visibleRegion.translate(posX, posY, submodelScale));
                conf.reset(gc);
                // draw the "bounding box" after all other operations to make interface pins look better
                gc.drawRectangle(getBounds());
        }
 
+       private static double map(double val, double valMin, double valMax, double mapMin, double mapMax)
+       {
+               return mapMin + (val - valMin) * (mapMax - mapMin) / (valMax - valMin);
+       }
+
        private static class PinMovable extends Pin
        {
                public PinMovable(GUIComponent component, int logicWidth, double relX, double relY)