bool C4MapScriptAlgoTurbulence::operator () (int32_t x, int32_t y, uint8_t& fg, uint8_t& bg) const
{
// Evaluate MAPALGO_Turbulence at x,y:
// move by a random offset iterations times
assert(operands.size()==1);
int32_t xy[] = {x, y};
for (int32_t iter=0; iter<iterations; ++iter)
{
int32_t s[2], p[2];
for (int dim=0; dim<2; ++dim)
{
s[dim] = divD(xy[dim], scale[dim]);
p[dim] = modD(xy[dim], scale[dim]);
}
int32_t a[2][2];
for (int dim=0; dim<2; ++dim)
{
int32_t aamp = amp[dim] / (iter+1);
if (!aamp) continue;
for (int dx=0; dx<2; ++dx) for (int dy=0; dy<2; ++dy) a[dx][dy] = QuerySeededRandomField(seed+dim, s[0]+dx, s[1]+dy, aamp) - aamp/2;
int32_t a_interp = a[0][0]*(scale[0]-p[0])*(scale[1]-p[1])
+ a[1][0]*( p[0])*(scale[1]-p[1])
+ a[0][1]*(scale[0]-p[0])*( p[1])
+ a[1][1]*( p[0])*( p[1]);
xy[dim] += a_interp / (scale[0]*scale[1]);
}
}
return (*operands[0])(xy[0],xy[1], fg, bg);
}
void KPrTimeLineView::mouseMoveEvent(QMouseEvent *event)
{
// Resize the bar
if (m_resize) {
const qreal subSteps = 0.2;
int startPos = 0;
for (int i = 0; i < KPrShapeAnimations::StartTime; i++) {
startPos = startPos + m_mainView->widthOfColumn(i);
}
int row = m_resizedRow;
//calculate real start
qreal startOffSet = m_mainView->calculateStartOffset(row) / 1000.0;
qreal start = m_mainView->model()->data(m_mainView->model()->index(row, KPrShapeAnimations::StartTime)).toInt() / 1000.0;
qreal duration = m_mainView->model()->data(m_mainView->model()->index(row, KPrShapeAnimations::Duration)).toInt() / 1000.0;
qreal totalSteps = m_mainView->numberOfSteps();
qreal stepSize = m_mainView->widthOfColumn( KPrShapeAnimations::StartTime) / totalSteps;
if ((event->pos().x() > (startPos + startOffSet*stepSize + stepSize * start - 5)) &&
((event->pos().x()) < (startPos + m_mainView->widthOfColumn( KPrShapeAnimations::StartTime)))) {
qreal newLength = (event->pos().x() - startPos - stepSize * start) / (stepSize) - startOffSet;
newLength = qFloor((newLength - modD(newLength, subSteps)) * 100.0) / 100.0;
// update bar length
m_mainView->model()->setData(m_mainView->model()->index(row, KPrShapeAnimations::Duration), newLength * 1000);
emit timeValuesChanged(m_mainView->model()->index(row, KPrShapeAnimations::Duration));
m_adjust = false;
if (newLength < duration)
m_adjust = true;
} else if ( ((event->pos().x()) > (startPos + m_mainView->widthOfColumn( KPrShapeAnimations::StartTime)))) {
m_mainView->incrementScale();
m_adjust = true;
}
update();
}
//Move the bar
if (m_move) {
const int Padding = 2;
int startPos = 0;
const qreal subSteps = 0.2;
for (int i = 0; i < KPrShapeAnimations::StartTime; i++) {
startPos = startPos + m_mainView->widthOfColumn(i);
}
int row = m_resizedRow;
//calculate real start
qreal startOffSet = m_mainView->calculateStartOffset(row) / 1000;
qreal duration = m_mainView->model()->data(m_mainView->model()->index(row, KPrShapeAnimations::Duration)).toInt() / 1000.0;
qreal start = m_mainView->model()->data(m_mainView->model()->index(row, KPrShapeAnimations::StartTime)).toInt() / 1000.0;
qreal totalSteps = m_mainView->numberOfSteps();
qreal stepSize = m_mainView->widthOfColumn(KPrShapeAnimations::StartTime) / totalSteps;
qreal Threshold = 0.4;
if ((event->pos().x() > (startPos + startDragPos + startOffSet*stepSize)) &&
((event->pos().x() + (duration * stepSize - startDragPos) + Padding * 2) <
(startPos+m_mainView->widthOfColumn( KPrShapeAnimations::StartTime)))) {
qreal newPos = (event->pos().x() - (startPos + startDragPos)) / (stepSize) - startOffSet;
newPos = qFloor((newPos - modD(newPos, subSteps)) * 100.0) / 100.0;
// update bar position
m_mainView->model()->setData(m_mainView->model()->index(row, KPrShapeAnimations::StartTime), newPos * 1000);
emit timeValuesChanged(m_mainView->model()->index(row, KPrShapeAnimations::StartTime));
m_adjust = false;
if (newPos <= start) {
m_adjust = true;
}
}
else if (((event->pos().x() + (duration*stepSize-startDragPos) + Padding * 2) >
(startPos + m_mainView->widthOfColumn( KPrShapeAnimations::StartTime)))) {
m_mainView->incrementScale();
}
else if (event->pos().x() < (startPos + startDragPos + startOffSet * stepSize + Threshold)) {
m_mainView->changeStartLimit(row);
}
update();
}
int row = rowAt(event->y());
int column = columnAt(event->x());
if (column == KPrShapeAnimations::StartTime) {
QRectF lineRect = getRowRect(row, column);
QRectF endLineRect = QRectF(lineRect.right() - RESIZE_RADIUS, lineRect.top() + BAR_MARGIN,
RESIZE_RADIUS * 2, lineRect.height() - 2 * BAR_MARGIN);
// If the user is near the end of the line they could resize
if (endLineRect.contains(event->x(), event->y())) {
setCursor(Qt::SizeHorCursor);
}
else {
if (lineRect.contains(event->x(), event->y())) {
setCursor(
#if QT_VERSION >= 0x040700
Qt::DragMoveCursor
#else
Qt::ClosedHandCursor
#endif
);
}
else {
setCursor(Qt::ArrowCursor);
}
}
}
QWidget::mouseMoveEvent(event);
}
// Creates a field of random numbers between 0 and scale-1. Returns the value of the field at position x,y
// Function should be deterministic for the same value of x,y, but should look somewhat random wrt neighbouring values of x,y
int32_t QuerySeededRandomField(int32_t seed, int32_t x, int32_t y, int32_t scale)
{
return modD((((seed ^ (x*214013))*214013) ^ (y*214013)), scale);
}
