void HelloWorld::onTouchesBegan(const std::vector<Touch*>& touches, Event *unused_event)
{
genBackground();
_tapDown = true;
Vec2 touchLocation = _terrain->convertTouchToNodeSpace(touches.front());
createTestBodyAtPostition(touchLocation);
}
void HelloWorld::onEnter()
{
Layer::onEnter();
setupWorld();
_terrain = Terrain::create(_world);
addChild(_terrain, 1);
genBackground();
// Enable Touches/Mouse.
auto listener = EventListenerTouchAllAtOnce::create();
listener->onTouchesBegan = CC_CALLBACK_2(HelloWorld::onTouchesBegan, this);
listener->onTouchesEnded = CC_CALLBACK_2(HelloWorld::onTouchesEnded, this);
listener->onTouchesCancelled = CC_CALLBACK_2(HelloWorld::onTouchesCancelled, this);
this->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener, this);
scheduleUpdate();
_hero = Hero::create(_world);
_hero->autorelease();
_terrain->getBatchNode()->addChild(_hero);
}
/*! (reimplemented)
First copies a background image of the hue donut and its
background color onto the frame, then draws the color triangle,
and finally the selectors.
*/
void QtColorTriangle::paintEvent(QPaintEvent *e)
{
QPainter p(this);
if (e->rect().intersects(contentsRect()))
p.setClipRegion(e->region().intersect(contentsRect()));
if (mustGenerateBackground) {
genBackground();
mustGenerateBackground = false;
}
// Blit the static generated background with the hue gradient onto
// the double buffer.
QImage buf = bg.copy();
// Draw the trigon
int h,s,v;
curColor.getHsv(&h, &s, &v);
// Find the color with only the hue, and max value and saturation
QColor hueColor;
hueColor.setHsv(curHue, 255, 255);
// Draw the triangle
drawTrigon(&buf, pa, pb, pc, hueColor);
// Slow step: convert the image to a pixmap
QPixmap pix = QPixmap::fromImage(buf);
QPainter painter(&pix);
painter.setRenderHint(QPainter::Antialiasing);
// Draw an outline of the triangle
QColor halfAlpha(0, 0, 0, 128);
painter.setPen(QPen(halfAlpha, 0));
painter.drawLine(pa, pb);
painter.drawLine(pb, pc);
painter.drawLine(pc, pa);
int ri, gi, bi;
hueColor.getRgb(&ri, &gi, &bi);
if ((ri * 30) + (gi * 59) + (bi * 11) > 12800)
painter.setPen(QPen(Qt::black, penWidth));
else
painter.setPen(QPen(Qt::white, penWidth));
painter.drawEllipse((int) (pd.x() - ellipseSize / 2.0),
(int) (pd.y() - ellipseSize / 2.0),
ellipseSize, ellipseSize);
curColor.getRgb(&ri, &gi, &bi);
// Find a color for painting the selector based on the brightness
// value of the color.
if ((ri * 30) + (gi * 59) + (bi * 11) > 12800)
painter.setPen(QPen(Qt::black, penWidth));
else
painter.setPen(QPen(Qt::white, penWidth));
// Draw the selector ellipse.
painter.drawEllipse(QRectF(selectorPos.x() - ellipseSize / 2.0,
selectorPos.y() - ellipseSize / 2.0,
ellipseSize + 0.5, ellipseSize + 0.5));
// Blit
p.drawPixmap(contentsRect().topLeft(), pix);
}
