--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/animation/stickman/stickman.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,338 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "stickman.h"
+#include "node.h"
+
+#include <QPainter>
+#include <QTimer>
+
+#define _USE_MATH_DEFINES
+#include <math.h>
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+static const qreal Coords[NodeCount * 2] = {
+ 0.0, -150.0, // head, #0
+
+ 0.0, -100.0, // body pentagon, top->bottom, left->right, #1 - 5
+ -50.0, -50.0,
+ 50.0, -50.0,
+ -25.0, 50.0,
+ 25.0, 50.0,
+
+ -100.0, 0.0, // right arm, #6 - 7
+ -125.0, 50.0,
+
+ 100.0, 0.0, // left arm, #8 - 9
+ 125.0, 50.0,
+
+ -35.0, 75.0, // lower body, #10 - 11
+ 35.0, 75.0,
+
+ -25.0, 200.0, // right leg, #12 - 13
+ -30.0, 300.0,
+
+ 25.0, 200.0, // left leg, #14 - 15
+ 30.0, 300.0
+
+};
+
+static const int Bones[BoneCount * 2] = {
+ 0, 1, // neck
+
+ 1, 2, // body
+ 1, 3,
+ 1, 4,
+ 1, 5,
+ 2, 3,
+ 2, 4,
+ 2, 5,
+ 3, 4,
+ 3, 5,
+ 4, 5,
+
+ 2, 6, // right arm
+ 6, 7,
+
+ 3, 8, // left arm
+ 8, 9,
+
+ 4, 10, // lower body
+ 4, 11,
+ 5, 10,
+ 5, 11,
+ 10, 11,
+
+ 10, 12, // right leg
+ 12, 13,
+
+ 11, 14, // left leg
+ 14, 15
+
+};
+
+StickMan::StickMan()
+{
+ m_sticks = true;
+ m_isDead = false;
+ m_pixmap = QPixmap("images/head.png");
+ m_penColor = Qt::white;
+ m_fillColor = Qt::black;
+
+ // Set up start position of limbs
+ for (int i=0; i<NodeCount; ++i) {
+ m_nodes[i] = new Node(QPointF(Coords[i * 2], Coords[i * 2 + 1]), this);
+ connect(m_nodes[i], SIGNAL(positionChanged()), this, SLOT(childPositionChanged()));
+ }
+
+ for (int i=0; i<BoneCount; ++i) {
+ int n1 = Bones[i * 2];
+ int n2 = Bones[i * 2 + 1];
+
+ Node *node1 = m_nodes[n1];
+ Node *node2 = m_nodes[n2];
+
+ QPointF dist = node1->pos() - node2->pos();
+ m_perfectBoneLengths[i] = sqrt(pow(dist.x(),2) + pow(dist.y(),2));
+ }
+
+ startTimer(10);
+}
+
+StickMan::~StickMan()
+{
+}
+
+void StickMan::childPositionChanged()
+{
+ prepareGeometryChange();
+}
+
+void StickMan::setDrawSticks(bool on)
+{
+ m_sticks = on;
+ for (int i=0;i<nodeCount();++i) {
+ Node *node = m_nodes[i];
+ node->setVisible(on);
+ }
+}
+
+QRectF StickMan::boundingRect() const
+{
+ // account for head radius=50.0 plus pen which is 5.0
+ return childrenBoundingRect().adjusted(-55.0, -55.0, 55.0, 55.0);
+}
+
+int StickMan::nodeCount() const
+{
+ return NodeCount;
+}
+
+Node *StickMan::node(int idx) const
+{
+ if (idx >= 0 && idx < NodeCount)
+ return m_nodes[idx];
+ else
+ return 0;
+}
+
+void StickMan::timerEvent(QTimerEvent *)
+{
+ update();
+}
+
+void StickMan::stabilize()
+{
+ static const qreal threshold = 0.001;
+
+ for (int i=0; i<BoneCount; ++i) {
+ int n1 = Bones[i * 2];
+ int n2 = Bones[i * 2 + 1];
+
+ Node *node1 = m_nodes[n1];
+ Node *node2 = m_nodes[n2];
+
+ QPointF pos1 = node1->pos();
+ QPointF pos2 = node2->pos();
+
+ QPointF dist = pos1 - pos2;
+ qreal length = sqrt(pow(dist.x(),2) + pow(dist.y(),2));
+ qreal diff = (length - m_perfectBoneLengths[i]) / length;
+
+ QPointF p = dist * (0.5 * diff);
+ if (p.x() > threshold && p.y() > threshold) {
+ pos1 -= p;
+ pos2 += p;
+
+ node1->setPos(pos1);
+ node2->setPos(pos2);
+ }
+ }
+}
+
+QPointF StickMan::posFor(int idx) const
+{
+ return m_nodes[idx]->pos();
+}
+
+//#include <QTime>
+void StickMan::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
+{
+ /* static int frames = 0;
+ static QTime time;
+ if (frames++ % 100 == 0) {
+ frames = 1;
+ time.restart();
+ }
+
+ if (time.elapsed() > 0) {
+ painter->setPen(Qt::white);
+ painter->drawText(0, 0, QString::number(frames / (time.elapsed() / 1000.0)));
+ }*/
+
+ stabilize();
+ if (m_sticks) {
+ painter->setPen(Qt::white);
+ for (int i=0; i<BoneCount; ++i) {
+ int n1 = Bones[i * 2];
+ int n2 = Bones[i * 2 + 1];
+
+ Node *node1 = m_nodes[n1];
+ Node *node2 = m_nodes[n2];
+
+ painter->drawLine(node1->pos(), node2->pos());
+ }
+ } else {
+ // first bone is neck and will be used for head
+
+ QPainterPath path;
+ path.moveTo(posFor(0));
+ path.lineTo(posFor(1));
+
+ // right arm
+ path.lineTo(posFor(2));
+ path.lineTo(posFor(6));
+ path.lineTo(posFor(7));
+
+ // left arm
+ path.moveTo(posFor(3));
+ path.lineTo(posFor(8));
+ path.lineTo(posFor(9));
+
+ // body
+ path.moveTo(posFor(2));
+ path.lineTo(posFor(4));
+ path.lineTo(posFor(10));
+ path.lineTo(posFor(11));
+ path.lineTo(posFor(5));
+ path.lineTo(posFor(3));
+ path.lineTo(posFor(1));
+
+ // right leg
+ path.moveTo(posFor(10));
+ path.lineTo(posFor(12));
+ path.lineTo(posFor(13));
+
+ // left leg
+ path.moveTo(posFor(11));
+ path.lineTo(posFor(14));
+ path.lineTo(posFor(15));
+
+ painter->setPen(QPen(m_penColor, 5.0, Qt::SolidLine, Qt::RoundCap));
+ painter->drawPath(path);
+
+ {
+ int n1 = Bones[0];
+ int n2 = Bones[1];
+ Node *node1 = m_nodes[n1];
+ Node *node2 = m_nodes[n2];
+
+ QPointF dist = node2->pos() - node1->pos();
+
+ qreal sinAngle = dist.x() / sqrt(pow(dist.x(), 2) + pow(dist.y(), 2));
+ qreal angle = asin(sinAngle) * 180.0 / M_PI;
+
+ QPointF headPos = node1->pos();
+ painter->translate(headPos);
+ painter->rotate(-angle);
+
+ painter->setBrush(m_fillColor);
+ painter->drawEllipse(QPointF(0,0), 50.0, 50.0);
+
+ painter->setBrush(m_penColor);
+ painter->setPen(QPen(m_penColor, 2.5, Qt::SolidLine, Qt::RoundCap));
+
+ // eyes
+ if (m_isDead) {
+ painter->drawLine(-30.0, -30.0, -20.0, -20.0);
+ painter->drawLine(-20.0, -30.0, -30.0, -20.0);
+
+ painter->drawLine(20.0, -30.0, 30.0, -20.0);
+ painter->drawLine(30.0, -30.0, 20.0, -20.0);
+ } else {
+ painter->drawChord(QRectF(-30.0, -30.0, 25.0, 70.0), 30.0*16, 120.0*16);
+ painter->drawChord(QRectF(5.0, -30.0, 25.0, 70.0), 30.0*16, 120.0*16);
+ }
+
+ // mouth
+ if (m_isDead) {
+ painter->drawLine(-28.0, 2.0, 29.0, 2.0);
+ } else {
+ painter->setBrush(QColor(128, 0, 64 ));
+ painter->drawChord(QRectF(-28.0, 2.0-55.0/2.0, 57.0, 55.0), 0.0, -180.0*16);
+ }
+
+ // pupils
+ if (!m_isDead) {
+ painter->setPen(QPen(m_fillColor, 1.0, Qt::SolidLine, Qt::RoundCap));
+ painter->setBrush(m_fillColor);
+ painter->drawEllipse(QPointF(-12.0, -25.0), 5.0, 5.0);
+ painter->drawEllipse(QPointF(22.0, -25.0), 5.0, 5.0);
+ }
+ }
+ }
+}
+
+
+