Make shapes resizable

VadereGui/src/org/vadere/gui/components/control/DefaultModeAdapter.java

@@ -21,7 +21,6 @@ public class DefaultModeAdapter implements IMode {
 	@Override
 	public void mouseClicked(final MouseEvent event) {
 		panelModel.setMousePosition(event.getPoint());
-		panelModel.setSelectedElement(panelModel.getMousePosition());
 		panelModel.notifyObservers();
 	}
 
@@ -65,6 +64,7 @@ public class DefaultModeAdapter implements IMode {
 	@Override
 	public void mouseMoved(MouseEvent e) {
 		panelModel.setMousePosition(e.getPoint());
+		panelModel.setSelectedElement(panelModel.getMousePosition());
 		panelModel.notifyObservers();
 	}
 

VadereGui/src/org/vadere/gui/topographycreator/control/SelectElementMode.java

 package org.vadere.gui.topographycreator.control;
 
-import java.awt.Point;
-import java.awt.event.MouseEvent;
-
-import javax.swing.undo.UndoableEdit;
-import javax.swing.undo.UndoableEditSupport;
-
+import org.lwjgl.system.CallbackI;
 import org.vadere.gui.components.control.DefaultSelectionMode;
 import org.vadere.gui.components.control.IMode;
+import org.vadere.gui.components.model.IDefaultModel;
 import org.vadere.gui.topographycreator.model.IDrawPanelModel;
 import org.vadere.state.scenario.ScenarioElement;
 import org.vadere.util.geometry.shapes.VPoint;
 import org.vadere.util.geometry.shapes.VShape;
 
+import javax.swing.undo.UndoableEdit;
+import javax.swing.undo.UndoableEditSupport;
+import java.awt.*;
+import java.awt.event.MouseEvent;
+import java.util.Optional;
+
 /**
  * In this mode the user can select a ScenarioElement with his mouse (click) and he can move
  * elements around (press -> drag -> release).
@@ -21,11 +23,27 @@ import org.vadere.util.geometry.shapes.VShape;
 public class SelectElementMode extends DefaultSelectionMode {
 	private final UndoableEditSupport undoSupport;
 	private final IDrawPanelModel panelModel;
+	private boolean resizeElement;
+	private boolean isModifying;
+	private static final int[] DIRECTIONAL_CURSOR_CODES;
+
+	static{
+		DIRECTIONAL_CURSOR_CODES = new int[8];
+		DIRECTIONAL_CURSOR_CODES[0] = Cursor.E_RESIZE_CURSOR;
+		DIRECTIONAL_CURSOR_CODES[1] = Cursor.NE_RESIZE_CURSOR;
+		DIRECTIONAL_CURSOR_CODES[2] = Cursor.N_RESIZE_CURSOR;
+		DIRECTIONAL_CURSOR_CODES[3] = Cursor.NW_RESIZE_CURSOR;
+		DIRECTIONAL_CURSOR_CODES[4] = Cursor.W_RESIZE_CURSOR;
+		DIRECTIONAL_CURSOR_CODES[5] = Cursor.SW_RESIZE_CURSOR;
+		DIRECTIONAL_CURSOR_CODES[6] = Cursor.S_RESIZE_CURSOR;
+		DIRECTIONAL_CURSOR_CODES[7] = Cursor.SE_RESIZE_CURSOR;
+	}
 
 	public SelectElementMode(final IDrawPanelModel panelModel, final UndoableEditSupport undoSupport) {
 		super(panelModel);
 		this.undoSupport = undoSupport;
 		this.panelModel = panelModel;
+		this.resizeElement = false;
 	}
 
 	private Point startPoint;
@@ -51,15 +69,25 @@ public class SelectElementMode extends DefaultSelectionMode {
 			startPoint = e.getPoint();
 			panelModel.setPrototypeShape(panelModel.getSelectedElement().getShape());
 			panelModel.showPrototypeShape();
+			resizeElement = panelModel.getSelectedElement().getShape().atBorder(panelModel.translateVectorCoordinates(startPoint));
+			isModifying = true;
 		} else {
 			super.mousePressed(e);
 		}
 	}
 
+	@Override
+	public void mouseMoved(MouseEvent e) {
+		super.mouseMoved(e);
+		panelModel.setMouseSelectionMode(this);
+	}
+
 	@Override
 	public void mouseDragged(final MouseEvent e) {
-		if (isMouseOnPrototypeShape()) {
-			VShape shape =
+		if (isMouseOnPrototypeShape() || isModifying) {
+			//VShape shape = panelModel.translate(new Point(e.getPoint().x - startPoint.x, e.getPoint().y - startPoint.y));
+			VShape shape = resizeElement ?
+					panelModel.resize(startPoint, e.getPoint()) :
 					panelModel.translate(new Point(e.getPoint().x - startPoint.x, e.getPoint().y - startPoint.y));
 			panelModel.setPrototypeShape(shape);
 			panelModel.showPrototypeShape();
@@ -72,20 +100,26 @@ public class SelectElementMode extends DefaultSelectionMode {
 	@Override
 	public void mouseReleased(final MouseEvent e) {
 		ScenarioElement element = panelModel.getSelectedElement();
-		if (isMouseOnPrototypeShape()) {
+		if (isMouseOnPrototypeShape() || isModifying) {
 			VShape oldShape = element.getShape();
-			VShape newShape =
+			VShape newShape = resizeElement ?
+					panelModel.resize(startPoint, e.getPoint()) :
 					panelModel.translate(new Point(e.getPoint().x - startPoint.x, e.getPoint().y - startPoint.y));
 
 			AttributeModifier.setShapeToAttributes(element, newShape);
 
 			// tell the panelModel that the selected element has changed!
 			panelModel.setSelectedElement(element);
+			element.getId();
+
 			UndoableEdit edit = new EditUpdateElementShape(panelModel, element, oldShape);
 			undoSupport.postEdit(edit);
 		} else {
 			super.mouseReleased(e);
 		}
+		resizeElement = false;
+		isModifying = false;
+		startPoint = null;
 		panelModel.hidePrototypeShape();
 		panelModel.notifyObservers();
 	}
@@ -93,13 +127,31 @@ public class SelectElementMode extends DefaultSelectionMode {
 	private boolean isMouseOnSelectedElement() {
 		ScenarioElement element = panelModel.getSelectedElement();
 		VPoint cursor = panelModel.getMousePosition();
-		return element != null && element.getShape().intersects(cursor.x, cursor.y, 0.001, 0.001);
+		return element != null && element.getShape().intersects(cursor.x - 0.01, cursor.y - 0.01, 0.02, 0.02);
+		//return element != null && element.getShape().contains(cursor);
 	}
 
 	private boolean isMouseOnPrototypeShape() {
 		VShape shape = panelModel.getPrototypeShape();
 		VPoint cursor = panelModel.getMousePosition();
-		return panelModel.isPrototypeVisble() && shape.intersects(cursor.x, cursor.y, 0.001, 0.001);
+		return panelModel.isPrototypeVisble() && shape.intersects(cursor.x - 0.01, cursor.y - 0.01, 0.02, 0.02);
+	}
+
+	@Override
+	public Cursor getCursor(){
+	    VShape selectedShape = panelModel.getSelectedElement() == null ? null : panelModel.getSelectedElement().getShape();
+	    VPoint mousePosition = panelModel.getMousePosition();
+	    boolean directionalCursorCondition = isMouseOnSelectedElement() && (resizeElement || selectedShape.atBorder(mousePosition));
+		if (directionalCursorCondition) {
+			return Cursor.getPredefinedCursor(
+					DIRECTIONAL_CURSOR_CODES[
+							selectedShape.getDirectionalCode(
+									startPoint == null ? mousePosition : new VPoint(startPoint),
+									DIRECTIONAL_CURSOR_CODES.length
+							)]
+			);
+		}
+		return super.getCursor();
 	}
 
 	@Override

VadereGui/src/org/vadere/gui/topographycreator/model/IDrawPanelModel.java

 package org.vadere.gui.topographycreator.model;
 
-import java.awt.Color;
-import java.awt.Cursor;
-import java.awt.Font;
-import java.awt.Point;
-import java.awt.geom.Rectangle2D;
-import java.util.List;
-import java.util.Observer;
-import java.util.function.Predicate;
-
 import org.jetbrains.annotations.NotNull;
 import org.vadere.gui.components.control.IMode;
 import org.vadere.gui.components.model.DefaultConfig;
@@ -24,6 +15,12 @@ import org.vadere.util.geometry.shapes.VPoint;
 import org.vadere.util.geometry.shapes.VRectangle;
 import org.vadere.util.geometry.shapes.VShape;
 
+import java.awt.*;
+import java.awt.geom.Rectangle2D;
+import java.util.List;
+import java.util.Observer;
+import java.util.function.Predicate;
+
 public interface IDrawPanelModel<T extends DefaultConfig> extends IDefaultModel<T>, Iterable<ScenarioElement> {
 
 	@Override
@@ -163,6 +160,8 @@ public interface IDrawPanelModel<T extends DefaultConfig> extends IDefaultModel<
 
 	VShape translate(Point vector);
 
+	VShape resize(Point start, Point end);
+
 	boolean isPrototypeVisble();
 
 	VShape getPrototypeShape();
@@ -190,4 +189,9 @@ public interface IDrawPanelModel<T extends DefaultConfig> extends IDefaultModel<
 	List<MeasurementArea> getMeasurementAreas();
 
 	Rectangle2D.Double getBounds();
+
+	default VPoint translateVectorCoordinates(Point point) {
+		return new VPoint(point.x / getScaleFactor(), getTopography().getBounds().height - point.y / getScaleFactor());
+	}
+
 }

VadereGui/src/org/vadere/gui/topographycreator/model/TopographyCreatorModel.java

 package org.vadere.gui.topographycreator.model;
 
-import java.awt.*;
-import java.awt.geom.Rectangle2D;
-import java.awt.geom.Rectangle2D.Double;
-import java.lang.reflect.Field;
-import java.util.Iterator;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.Observer;
-import java.util.function.Predicate;
-
 import org.jetbrains.annotations.NotNull;
 import org.vadere.gui.components.control.IMode;
 import org.vadere.gui.components.model.DefaultConfig;
@@ -26,6 +16,16 @@ import org.vadere.util.geometry.shapes.VPoint;
 import org.vadere.util.geometry.shapes.VRectangle;
 import org.vadere.util.geometry.shapes.VShape;
 
+import java.awt.*;
+import java.awt.geom.Rectangle2D;
+import java.awt.geom.Rectangle2D.Double;
+import java.lang.reflect.Field;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Observer;
+import java.util.function.Predicate;
+
 
 /**
  * The data of the DrawPanel. Its holds the whole data of one scenario.
@@ -355,6 +355,13 @@ public class TopographyCreatorModel extends DefaultModel implements IDrawPanelMo
 		setChanged();
 	}
 
+	@Override
+	public VShape resize(final Point start, final Point end) {
+		VPoint startVector = translateVectorCoordinates(start);
+		VPoint endVector = translateVectorCoordinates(end);
+		return getSelectedElement().getShape().resize(startVector, endVector);
+	}
+
 	@Override
 	public VShape translate(final Point vector) {
 		VPoint worldVector = new VPoint(vector.x / getScaleFactor(), -vector.y / getScaleFactor());

VadereUtils/src/org/vadere/util/geometry/DataTriangle.java

@@ -7,6 +7,7 @@ import java.util.TreeSet;
 
 import org.vadere.util.geometry.GeometryUtils;
 import org.vadere.util.geometry.shapes.VPoint;
+import org.vadere.util.geometry.shapes.VShape;
 import org.vadere.util.geometry.shapes.VTriangle;
 
 /**
@@ -42,7 +43,6 @@ public class DataTriangle extends VTriangle {
 	 * @param p1
 	 * @param p2
 	 * @param p3
-	 * @param mp
 	 */
 	public DataTriangle(DataPoint p1, DataPoint p2, DataPoint p3) {
 		super(p1, p2, p3);

VadereUtils/src/org/vadere/util/geometry/shapes/VDisc.java

@@ -16,4 +16,5 @@ public class VDisc extends VCircle {
 	public double distance(@NotNull final IPoint pos) {
 		return getCenter().distance(pos) - getRadius();
 	}
+
 }

VadereUtils/src/org/vadere/util/geometry/shapes/VRectangle.java

 package org.vadere.util.geometry.shapes;
 
+import org.vadere.util.geometry.GeometryUtils;
+
+import java.awt.*;
 import java.awt.geom.Rectangle2D;
 import java.util.Arrays;
 import java.util.List;
 
-import org.vadere.util.geometry.GeometryUtils;
-
 @SuppressWarnings("serial")
 /**
  * Note: A rectangle which has the same corner points as a polygon is not
@@ -115,8 +116,32 @@ public class VRectangle extends Rectangle2D.Double implements VShape {
 	}
 
 	@Override
-	public boolean intersects(VLine intersectingLine) {
+	public VRectangle resize(IPoint start, IPoint end){
+		double minX = Math.abs(start.getX() - getMinX()) < BORDER_TOLERANCE ? end.getX() : getMinX();
+		double minY = Math.abs(start.getY() - getMinY())  < BORDER_TOLERANCE ? end.getY() : getMinY();
 
+		double maxX    = Math.abs(start.getX() - getMaxX()) < BORDER_TOLERANCE ? end.getX() : getMaxX();
+		double maxY    = Math.abs(start.getY() - getMaxY()) < BORDER_TOLERANCE ? end.getY() : getMaxY();
+
+		return new VRectangle(minX, minY, maxX - minX, maxY - minY);
+	}
+
+	@Override
+	public int getDirectionalCode(IPoint startPoint, int directions){
+		double horizontalRatio = (startPoint.getX() - getCenterX()) / (getWidth() / 2);
+		double verticalRatio = (startPoint.getY() - getCenterY()) / (getHeight() / 2);
+		if (Math.abs(horizontalRatio - verticalRatio) < BORDER_TOLERANCE) {
+			return horizontalRatio > 0 ? 1 : 5;
+		} else if (Math.abs(horizontalRatio + verticalRatio) < BORDER_TOLERANCE) {
+			return horizontalRatio > 0 ? 3 : 7;
+		} else if (Math.abs(horizontalRatio) > Math.abs(verticalRatio)) {
+			return horizontalRatio > 0 ? 0 : 4;
+		}
+		return verticalRatio > 0 ? 2 : 6;
+	}
+
+	@Override
+	public boolean intersects(VLine intersectingLine) {
 		if (intersectingLine.intersects(this)) {
 			return true;
 		}
@@ -137,18 +162,18 @@ public class VRectangle extends Rectangle2D.Double implements VShape {
 		return new VPolygon(this);
 	}
 
-    @Override
-    public boolean intersects(final VShape shape) {
-        if(shape instanceof VRectangle){
-            return super.intersects(((VRectangle)shape));
-        }
-        else if(shape instanceof VPolygon) {
-            return ((VPolygon)shape).intersects(this);
-        }
-        else {
-            return VShape.super.intersects(shape);
-        }
-    }
+	@Override
+	public boolean intersects(final VShape shape) {
+		if(shape instanceof VRectangle){
+			return super.intersects(((VRectangle)shape));
+		}
+		else if(shape instanceof VPolygon) {
+			return ((VPolygon)shape).intersects(this);
+		}
+		else {
+			return VShape.super.intersects(shape);
+		}
+	}
 
 	@Override
 	public List<VPoint> getPath() {

VadereUtils/src/org/vadere/util/geometry/shapes/VShape.java

 package org.vadere.util.geometry.shapes;
 
-import java.awt.Shape;
+import java.awt.*;
 import java.awt.geom.Area;
 import java.awt.geom.Path2D;
 import java.awt.geom.Rectangle2D;
 import java.util.ArrayList;
 import java.util.List;
 
-import org.vadere.util.geometry.shapes.ShapeType;
-
 /**
  * Geometric shape and position.
  */
 public interface VShape extends Shape, Cloneable {
+
+	double BORDER_TOLERANCE = 0.1;
+
 	double distance(IPoint point);
 
 	VPoint closestPoint(IPoint point);
@@ -25,6 +26,28 @@ public interface VShape extends Shape, Cloneable {
 
 	VShape scale(final double scalar);
 
+
+
+	default boolean atBorder(final VPoint point){
+		VShape circle = new VCircle(new VPoint(point.getX(), point.getY()), BORDER_TOLERANCE);
+		return intersects(circle) && !containsShape(circle);
+	}
+
+	default VShape resize(final IPoint start, final IPoint end){
+		double startDistance = distanceToCenter(start);
+		double endDistance = distanceToCenter(end);
+		VPoint center = this.getCentroid();
+		VShape scaled = this.scale(endDistance / startDistance);
+		return scaled.translatePrecise(center.subtract(scaled.getCentroid()));
+	}
+
+	default double distanceToCenter(final IPoint point){
+		final int squareExponent = 2;
+		double deltaXSquared = Math.pow(point.getX() - this.getCentroid().getX(), squareExponent);
+		double deltaYSquared = Math.pow(point.getY() - this.getCentroid().getY(), squareExponent);
+		return Math.sqrt(deltaXSquared + deltaYSquared);
+	}
+
 	boolean intersects(VLine intersectingLine);
 
 	VPoint getCentroid();
@@ -98,4 +121,16 @@ public interface VShape extends Shape, Cloneable {
 		thisShape.subtract(otherShape);
 		return !thisShape.equals(thisShapeCpy);
 	}
+
+	default int getDirectionalCode(Point startPoint, int directions) {
+		return getDirectionalCode(new VPoint(startPoint), directions);
+	}
+
+	default int getDirectionalCode(IPoint startPoint, int directions) {
+		VPoint direction = new VPoint(startPoint).subtract(getCentroid());
+		double angle = Math.atan(direction.getY() / direction.getX());
+		angle += Math.PI + Math.PI / (directions);
+		double indexRatio = (angle) / (2 * Math.PI);
+		return (int)(indexRatio * directions);
+	}
 }