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+/****************************************************************************
+**
+** Copyright (C) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Script Generator project on Qt Labs.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+function Mouse(parent) {
+ QGraphicsItem.call(this, parent);
+ this.angle = 0;
+ this.speed = 0;
+ this.mouseEyeDirection = 0;
+
+ var adjust = 0.5;
+ this._boundingRect = new QRectF(-20 - adjust, -22 - adjust,
+ 40 + adjust, 83 + adjust);
+ this.boundingRect = function() { return this._boundingRect; };
+
+ this._shape = new QPainterPath();
+ this._shape.addRect(-10, -20, 20, 40);
+ this.shape = function() { return this._shape; }
+
+ this._brush = new QBrush(Qt.SolidPattern);
+ this._tail = new QPainterPath(new QPointF(0, 20));
+ this._tail.cubicTo(-5, 22, -5, 22, 0, 25);
+ this._tail.cubicTo(5, 27, 5, 32, 0, 30);
+ this._tail.cubicTo(-5, 32, -5, 42, 0, 35);
+
+ this._pupilRect1 = new QRectF(-8 + this.mouseEyeDirection, -17, 4, 4);
+ this._pupilRect2 = new QRectF(4 + this.mouseEyeDirection, -17, 4, 4);
+
+ this.color = new QColor(Math.random()*256, Math.random()*256,
+ Math.random()*256);
+ this.rotate(Math.random()*360);
+
+ var timer = new QTimer(this);
+ timer.singleShot = false;
+ timer.timeout.connect(this, function() { this.move(); });
+ timer.start(1000 / 33);
+}
+
+Mouse.prototype = new QGraphicsItem();
+
+Mouse.prototype.paint = function(painter, styleOptionGraphicsItem, widget) {
+ // Body
+ painter.setBrush(new QBrush(this.color));
+ painter.drawEllipse(-10, -20, 20, 40);
+
+ // Eyes
+ this._brush.setColor(Qt.white);
+ painter.setBrush(this._brush);
+ painter.drawEllipse(-10, -17, 8, 8);
+ painter.drawEllipse(2, -17, 8, 8);
+
+ // Nose
+ this._brush.setColor(Qt.black);
+ painter.setBrush(this._brush);
+ painter.drawEllipse(-2, -22, 4, 4);
+
+ // Pupils
+ painter.drawEllipse(this._pupilRect1);
+ painter.drawEllipse(this._pupilRect2);
+
+ // Ears
+ // if (this.scene().collidingItems(this).length == 0) FIXME: const QGraphicsItem*
+ if (this.scene().items(this.pos()).length == 1)
+ this._brush.setColor(Qt.darkYellow);
+ else
+ this._brush.setColor(Qt.red);
+ painter.setBrush(this._brush);
+
+ painter.drawEllipse(-17, -12, 16, 16);
+ painter.drawEllipse(1, -12, 16, 16);
+
+ // Tail
+ painter.setBrush(Qt.NoBrush);
+ painter.drawPath(this._tail);
+}
+
+Mouse.prototype.move = function() {
+ // Don't move too far away
+ var lineToCenter = new QLineF(Mouse.origo, this.mapFromScene(0, 0));
+ if (lineToCenter.length() > 150) {
+ var angleToCenter = Math.acos(lineToCenter.dx()
+ / lineToCenter.length());
+ if (lineToCenter.dy() < 0)
+ angleToCenter = Mouse.TWO_PI - angleToCenter;
+ angleToCenter = Mouse.normalizeAngle((Math.PI - angleToCenter)
+ + Math.PI / 2);
+
+ if (angleToCenter < Math.PI && angleToCenter > Math.PI / 4) {
+ // Rotate left
+ this.angle += (this.angle < -Math.PI / 2) ? 0.25 : -0.25;
+ } else if (angleToCenter >= Math.PI
+ && angleToCenter < (Math.PI + Math.PI / 2
+ + Math.PI / 4)) {
+ // Rotate right
+ this.angle += (this.angle < Math.PI / 2) ? 0.25 : -0.25;
+ }
+ } else if (Math.sin(this.angle) < 0) {
+ this.angle += 0.25;
+ } else if (Math.sin(this.angle) > 0) {
+ this.angle -= 0.25;
+ }
+
+ // Try not to crash with any other mice
+
+ var polygon = new QPolygonF(
+ [ this.mapToScene(0, 0),
+ this.mapToScene(-30, -50),
+ this.mapToScene(30, -50) ] );
+
+ var dangerMice = this.scene().items(polygon);
+ for (var i = 0; i < dangerMice.length; ++i) {
+ var item = dangerMice[i];
+ if (item == this)
+ continue;
+
+ var lineToMouse = new QLineF(Mouse.origo,
+ this.mapFromItem(item, 0, 0));
+ var angleToMouse = Math.acos(lineToMouse.dx()
+ / lineToMouse.length());
+ if (lineToMouse.dy() < 0)
+ angleToMouse = Mouse.TWO_PI - angleToMouse;
+ angleToMouse = Mouse.normalizeAngle((Math.PI - angleToMouse)
+ + Math.PI / 2);
+
+ if (angleToMouse >= 0 && angleToMouse < (Math.PI / 2)) {
+ // Rotate right
+ this.angle += 0.5;
+ } else if (angleToMouse <= Mouse.TWO_PI
+ && angleToMouse > (Mouse.TWO_PI - Math.PI / 2)) {
+ // Rotate left
+ this.angle -= 0.5;
+ }
+ }
+
+ // Add some random movement
+ if (dangerMice.length < 1 && Math.random() < 0.1) {
+ if (Math.random() > 0.5)
+ this.angle += Math.random() / 5;
+ else
+ this.angle -= Math.random() / 5;
+ }
+
+ this.speed += (-50 + Math.random() * 100) / 100.0;
+
+ var dx = Math.sin(this.angle) * 10;
+ this.mouseEyeDirection = (Math.abs(dx / 5) < 1) ? 0 : dx / 5;
+
+ this.rotate(dx);
+ this.setPos(this.mapToParent(0, -(3 + Math.sin(this.speed) * 3)));
+}
+
+Mouse.normalizeAngle = function(angle) {
+ while (angle < 0)
+ angle += Mouse.TWO_PI;
+ while (angle > Mouse.TWO_PI)
+ angle -= Mouse.TWO_PI;
+ return angle;
+}
+
+Mouse.TWO_PI = Math.PI * 2;
+Mouse.origo = new QPointF(0, 0);
+
+
+
+function CollidingMice(parent) {
+ QWidget.call(this, parent);
+ var scene = new QGraphicsScene(this);
+ scene.setSceneRect(-300, -300, 600, 600);
+ scene.itemIndexMethod = QGraphicsScene.NoIndex;
+
+ for (var i = 0; i < CollidingMice.MOUSE_COUNT; ++i) {
+ var mouse = new Mouse(this);
+ mouse.setPos(Math.sin((i * 6.28) / CollidingMice.MOUSE_COUNT) * 200,
+ Math.cos((i * 6.28) / CollidingMice.MOUSE_COUNT) * 200);
+ scene.addItem(mouse);
+ }
+
+ var view = new QGraphicsView(scene, this);
+ view.setRenderHint(QPainter.Antialiasing);
+ view.backgroundBrush = new QBrush(new QPixmap("images/cheese.png"));
+ view.cacheMode = new QGraphicsView.CacheMode(QGraphicsView.CacheBackground);
+ view.dragMode = QGraphicsView.ScrollHandDrag;
+ view.viewportUpdateMode = QGraphicsView.FullViewportUpdate;
+
+ var layout = new QGridLayout();
+ layout.addWidget(view, 0, 0);
+ this.setLayout(layout);
+
+ this.setWindowTitle("Colliding Mice");
+ this.resize(400, 300);
+}
+
+CollidingMice.prototype = new QWidget();
+
+CollidingMice.MOUSE_COUNT = 7;
+
+
+
+var collidingMice = new CollidingMice(null);
+collidingMice.show();
+QCoreApplication.exec();
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-27 17:20:33 +0000