double Perlin::noise3(double x, double y, double z) {
int fX, fY, fZ;
double dX, dY, dZ;
double u, v, w;
int a, aa, ab, b, ba, bb;
// Determine the bounds of the unit cube this point is inside
fX = ((int)x) % _size;
fY = ((int)y) % _size;
fZ = ((int)z) % _size;
// Determine the difference of this point from the origin of the unit cube
dX = x - (int)x;
dY = y - (int)y;
dZ = z - (int)z;
// Determine fade values for each dimension using our location inside the unit cube
u = fade(dX);
v = fade(dY);
w = fade(dZ);
// Find pseudo-random gradients by operating on the dimensional indices of the unit cube
// The important part here is that these pseudo-random gradients are always the same for a given point
a = _p[fX] + fY;
aa = _p[a] + fZ;
ab = _p[a + 1] + fZ;
b = _p[fX + 1] + fY;
ba = _p[b] + fZ;
bb = _p[b+1] + fZ;
// Here we take the gradients at each of the 8 corners of the unit cube and linearly interpolate for each dimension (first x, then y, then z) using the fade values
return lerp(w,
lerp(v,
lerp(u,
gradient3(_p[aa], dX, dY, dZ ),
gradient3(_p[ba], dX-1, dY, dZ )
),
lerp(u,
gradient3(_p[ab], dX, dY-1, dZ ),
gradient3(_p[bb], dX-1, dY-1, dZ )
)
),
lerp(v,
lerp(u,
gradient3(_p[aa+1], dX, dY, dZ-1),
gradient3(_p[ba+1], dX-1, dY, dZ-1)
),
lerp(u,
gradient3(_p[ab+1], dX, dY-1, dZ-1),
gradient3(_p[bb+1], dX-1, dY-1, dZ-1)
)
)
);
}
void UBGraphicsTriangle::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
{
painter->setPen(Qt::NoPen);
QPolygonF polygon;
QLinearGradient gradient1(QPointF(A1.x(), 0), QPointF(A2.x(), 0));
gradient1.setColorAt(0, edgeFillColor());
gradient1.setColorAt(1, middleFillColor());
painter->setBrush(gradient1);
polygon << A1 << A2 << B2 << B1;
painter->drawPolygon(polygon);
polygon.clear();
QLinearGradient gradient2(QPointF(0, B1.y()), QPointF(0, B2.y()));
gradient2.setColorAt(0, edgeFillColor());
gradient2.setColorAt(1, middleFillColor());
painter->setBrush(gradient2);
polygon << B1 << B2 << C2 << C1;
painter->drawPolygon(polygon);
polygon.clear();
QLinearGradient gradient3(CC, C2);
gradient3.setColorAt(0, edgeFillColor());
gradient3.setColorAt(1, middleFillColor());
painter->setBrush(gradient3);
polygon << C1 << C2 << A2 << A1;
painter->drawPolygon(polygon);
polygon.clear();
painter->setBrush(Qt::NoBrush);
painter->setPen(drawColor());
polygon << A1 << B1 << C1;
painter->drawPolygon(polygon);
polygon.clear();
polygon << A2 << B2 << C2;
painter->drawPolygon(polygon);
paintGraduations(painter);
mAntiScaleRatio = 1 / (UBApplication::boardController->systemScaleFactor() * UBApplication::boardController->currentZoom());
QTransform antiScaleTransform;
antiScaleTransform.scale(mAntiScaleRatio, mAntiScaleRatio);
mCloseSvgItem->setTransform(antiScaleTransform);
mHFlipSvgItem->setTransform(antiScaleTransform);
mVFlipSvgItem->setTransform(antiScaleTransform);
mRotateSvgItem->setTransform(antiScaleTransform);
mCloseSvgItem->setPos(closeButtonRect().topLeft());
mHFlipSvgItem->setPos(hFlipRect().topLeft());
mVFlipSvgItem->setPos(vFlipRect().topLeft());
mRotateSvgItem->setPos(rotateRect().topLeft());
if (mShowButtons || mResizing1 || mResizing2)
{
painter->setBrush(QColor(0, 0, 0));
if (mShowButtons || mResizing1)
painter->drawPolygon(resize1Polygon());
if (mShowButtons || mResizing2)
painter->drawPolygon(resize2Polygon());
}
}
