fixing bug in circle out of ring tool

make exported file background transparent

Author: hosseinmp76

.gitignore

@@ -27,4 +27,5 @@ hs_err_pid*
 /.classpath
 /.project
 /build/
+/bin/
 /.settings/

src/main/java/ir/hosseinmp76/shayancircles/Utills.java

@@ -0,0 +1,30 @@
+package ir.hosseinmp76.shayancircles;
+
+import java.awt.image.RenderedImage;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+
+import ir.hosseinmp76.shayancircles.ui.fx.MyCanvas;
+import javafx.embed.swing.SwingFXUtils;
+import javafx.scene.SnapshotParameters;
+import javafx.scene.image.WritableImage;
+import javafx.scene.paint.Color;
+
+public class Utills {
+    public static void savePNG(int width, int height, MyCanvas canvas, File file) {
+	try {
+	    final WritableImage writableImage = new WritableImage(width,
+		    height);
+	    SnapshotParameters sp = new SnapshotParameters();
+	    sp.setFill(Color.TRANSPARENT);
+
+	    canvas.snapshot(sp, writableImage);
+	    final RenderedImage renderedImage = SwingFXUtils
+		    .fromFXImage(writableImage, null);
+	    ImageIO.write(renderedImage, "png", file);
+	} catch (final IOException ex) {
+	}
+    }
+}

src/main/java/ir/hosseinmp76/shayancircles/tools/ClasicCircleOutOfRingTool.java

@@ -12,8 +12,7 @@ public static Vector2D staticGetPoint(
 	final var r = tool.getInnerCirleRadios();
 	final var R = tool.getOuterCirleBigRadios();
 	final double outerAngle = tool.toolState.getTraveledRadius()
-		% (2 * Math.PI * tool.getOuterCirleSmallRadios())
-		/ tool.getOuterCirleSmallRadios();
+		% (2 * Math.PI * R) / R;
 	final double innerAngle = tool.toolState.getTraveledRadius()
 		% (2 * Math.PI * r) / r;
 
@@ -35,6 +34,12 @@ public ClasicCircleOutOfRingTool(final double outerCirleRadios,
 		penHoleDistanceToInnerCirleCenter, color);
 	// TODO Auto-generated constructor stub
     }
+    
+
+    @Override
+    public Vector2D getPoint() {
+	return ClasicCircleOutOfRingTool.staticGetPoint(this);
+    }
 
     @Override
     public boolean isFinished() {

src/main/java/ir/hosseinmp76/shayancircles/ui/fx/FXApplication.java

@@ -6,7 +6,7 @@
 
 import javax.imageio.ImageIO;
 
-
+import ir.hosseinmp76.shayancircles.Utills;
 import ir.hosseinmp76.shayancircles.tools.AbstractTool;
 import ir.hosseinmp76.shayancircles.tools.ClasicCircleOutOfRingTool;
 import ir.hosseinmp76.shayancircles.tools.ClasicRingCircleTool;
@@ -20,6 +20,7 @@
 import javafx.event.EventHandler;
 import javafx.geometry.Orientation;
 import javafx.scene.Scene;
+import javafx.scene.SnapshotParameters;
 import javafx.scene.control.Button;
 import javafx.scene.control.ColorPicker;
 import javafx.scene.control.ComboBox;
@@ -126,7 +127,7 @@ public void handle(final long now) {
 	    FXApplication.this.tool.changeColor(colorPicker.getValue());
 	});
 	final var myCanvasParentPane = new Pane();
-
+	myCanvasParentPane.setBackground(null);
 	ComboBox<ToolType> comboBox = new ComboBox();
 	comboBox.getItems().add(ToolType.ClasicCircleOutOfRingTool);
 	comboBox.getItems().add(ToolType.ClasicRingCircleTool);
@@ -199,15 +200,8 @@ public void handle(final long now) {
 	    final File file = fileChooser.showSaveDialog(stage);
 
 	    if (file != null) {
-		try {
-		    final WritableImage writableImage = new WritableImage(
-			    FXApplication.width, FXApplication.height);
-		    FXApplication.this.myCanvas.snapshot(null, writableImage);
-		    final RenderedImage renderedImage = SwingFXUtils
-			    .fromFXImage(writableImage, null);
-		    ImageIO.write(renderedImage, "png", file);
-		} catch (final IOException ex) {
-		}
+		Utills.savePNG(FXApplication.this.width, FXApplication.this.height,
+			myCanvas, file);
 	    }
 	});
 
@@ -245,4 +239,5 @@ public void handle(final long now) {
 
     }
 
+    
 }

src/main/java/ir/hosseinmp76/shayancircles/ui/fx/MyCanvas.java

@@ -30,8 +30,12 @@ public class MyCanvas extends Canvas {
 	this.tool = tool;
 	this.perSecond = perSecond;
 	this.centerOfCanvas = new Vector2D(widght / 2, height / 2);
-	var gc = this.getGraphicsContext2D();
-	gc.fillOval(0, 0, widght, height);
+	   
+//	var gc = this.getGraphicsContext2D();
+//	gc.setFill(Color.TRANSPARENT);
+//	gc.fillRect(0, 0, widght, height);
+//	gc.setFill(Color.BLACK);
+//	gc.fillOval(0, 0, widght, height);
 
     }