void hist_impl::render(const void* pWnd, int pX, int pY, int pVPW, int pVPH)
{
float w = float(pVPW - (leftMargin()+rightMargin()+tickSize()));
float h = float(pVPH - (bottomMargin()+topMargin()+tickSize()));
float offset_x = (2.0f * (leftMargin()+tickSize()) + (w - pVPW)) / pVPW;
float offset_y = (2.0f * (bottomMargin()+tickSize()) + (h - pVPH)) / pVPH;
float scale_x = w / pVPW;
float scale_y = h / pVPH;
CheckGL("Begin Histogram::render");
/* Enavle scissor test to discard anything drawn beyond viewport.
* Set scissor rectangle to clip fragments outside of viewport */
glScissor(pX+leftMargin()+tickSize(), pY+bottomMargin()+tickSize(),
pVPW - (leftMargin()+rightMargin()+tickSize()),
pVPH - (bottomMargin()+topMargin()+tickSize()));
glEnable(GL_SCISSOR_TEST);
glm::mat4 trans = glm::translate(glm::scale(glm::mat4(1),
glm::vec3(scale_x, scale_y, 1)),
glm::vec3(offset_x, offset_y, 0));
glUseProgram(mHistBarProgram);
glUniformMatrix4fv(mHistBarMatIndex, 1, GL_FALSE, glm::value_ptr(trans));
glUniform4fv(mHistBarColorIndex, 1, mBarColor);
glUniform1f(mHistBarNBinsIndex, (GLfloat)mNBins);
glUniform1f(mHistBarYMaxIndex, ymax());
/* render a rectangle for each bin. Same
* rectangle is scaled and translated accordingly
* for each bin. This is done by OpenGL feature of
* instanced rendering */
bindResources(pWnd);
glDrawArraysInstanced(GL_TRIANGLE_FAN, 0, 4, mNBins);
unbindResources();
glUseProgram(0);
/* Stop clipping */
glDisable(GL_SCISSOR_TEST);
renderChart(pWnd, pX, pY, pVPW, pVPH);
CheckGL("End Histogram::render");
}
double height() const { return ymax() - ymin(); };
nervana::boundingbox::box unnormalize(float width, float height)
{
return nervana::boundingbox::box(
xmin() * width, ymin() * height, xmax() * width - 1, ymax() * height - 1);
}
QRectF QTessellatorPrivate::collectAndSortVertices(const QPointF *points, int *maxActiveEdges)
{
*maxActiveEdges = 0;
Vertex *v = vertices.storage;
Vertex **vv = vertices.sorted;
qreal xmin(points[0].x());
qreal xmax(points[0].x());
qreal ymin(points[0].y());
qreal ymax(points[0].y());
// collect vertex data
Q27Dot5 y_prev = FloatToQ27Dot5(points[vertices.nPoints-1].y());
Q27Dot5 x_next = FloatToQ27Dot5(points[0].x());
Q27Dot5 y_next = FloatToQ27Dot5(points[0].y());
int j = 0;
int i = 0;
while (i < vertices.nPoints) {
Q27Dot5 y_curr = y_next;
*vv = v;
v->x = x_next;
v->y = y_next;
v->flags = 0;
next_point:
xmin = qMin(xmin, points[i+1].x());
xmax = qMax(xmax, points[i+1].x());
ymin = qMin(ymin, points[i+1].y());
ymax = qMax(ymax, points[i+1].y());
y_next = FloatToQ27Dot5(points[i+1].y());
x_next = FloatToQ27Dot5(points[i+1].x());
// skip vertices on top of each other
if (v->x == x_next && v->y == y_next) {
++i;
if (i < vertices.nPoints)
goto next_point;
Vertex *v0 = vertices.storage;
v0->flags &= ~(LineBeforeStarts|LineBeforeEnds|LineBeforeHorizontal);
if (y_prev < y_curr)
v0->flags |= LineBeforeEnds;
else if (y_prev > y_curr)
v0->flags |= LineBeforeStarts;
else
v0->flags |= LineBeforeHorizontal;
if ((v0->flags & (LineBeforeStarts|LineAfterStarts))
&& !(v0->flags & (LineAfterEnds|LineBeforeEnds)))
*maxActiveEdges += 2;
break;
}
if (y_prev < y_curr)
v->flags |= LineBeforeEnds;
else if (y_prev > y_curr)
v->flags |= LineBeforeStarts;
else
v->flags |= LineBeforeHorizontal;
if (y_curr < y_next)
v->flags |= LineAfterStarts;
else if (y_curr > y_next)
v->flags |= LineAfterEnds;
else
v->flags |= LineAfterHorizontal;
// ### could probably get better limit by looping over sorted list and counting down on ending edges
if ((v->flags & (LineBeforeStarts|LineAfterStarts))
&& !(v->flags & (LineAfterEnds|LineBeforeEnds)))
*maxActiveEdges += 2;
y_prev = y_curr;
++v;
++vv;
++j;
++i;
}
vertices.nPoints = j;
QDEBUG() << "maxActiveEdges=" << *maxActiveEdges;
vv = vertices.sorted;
qSort(vv, vv + vertices.nPoints, compareVertex);
return QRectF(xmin, ymin, xmax-xmin, ymax-ymin);
}
void old_tesselate_polygon(QVector<XTrapezoid> *traps, const QPointF *pg, int pgSize,
bool winding)
{
QVector<QEdge> edges;
edges.reserve(128);
qreal ymin(INT_MAX/256);
qreal ymax(INT_MIN/256);
//painter.begin(pg, pgSize);
if (pg[0] != pg[pgSize-1])
qWarning() << Q_FUNC_INFO << "Malformed polygon (first and last points must be identical)";
// generate edge table
// qDebug() << "POINTS:";
for (int x = 0; x < pgSize-1; ++x) {
QEdge edge;
QPointF p1(Q27Dot5ToDouble(FloatToQ27Dot5(pg[x].x())),
Q27Dot5ToDouble(FloatToQ27Dot5(pg[x].y())));
QPointF p2(Q27Dot5ToDouble(FloatToQ27Dot5(pg[x+1].x())),
Q27Dot5ToDouble(FloatToQ27Dot5(pg[x+1].y())));
// qDebug() << " "
// << p1;
edge.winding = p1.y() > p2.y() ? 1 : -1;
if (edge.winding > 0)
qSwap(p1, p2);
edge.p1.x = XDoubleToFixed(p1.x());
edge.p1.y = XDoubleToFixed(p1.y());
edge.p2.x = XDoubleToFixed(p2.x());
edge.p2.y = XDoubleToFixed(p2.y());
edge.m = (p1.y() - p2.y()) / (p1.x() - p2.x()); // line derivative
edge.b = p1.y() - edge.m * p1.x(); // intersection with y axis
edge.m = edge.m != 0.0 ? 1.0 / edge.m : 0.0; // inverted derivative
edges.append(edge);
ymin = qMin(ymin, qreal(XFixedToDouble(edge.p1.y)));
ymax = qMax(ymax, qreal(XFixedToDouble(edge.p2.y)));
}
QList<const QEdge *> et; // edge list
for (int i = 0; i < edges.size(); ++i)
et.append(&edges.at(i));
// sort edge table by min y value
qSort(et.begin(), et.end(), compareEdges);
// eliminate shared edges
for (int i = 0; i < et.size(); ++i) {
for (int k = i+1; k < et.size(); ++k) {
const QEdge *edgeI = et.at(i);
const QEdge *edgeK = et.at(k);
if (edgeK->p1.y > edgeI->p1.y)
break;
if (edgeI->winding != edgeK->winding &&
isEqual(edgeI->p1, edgeK->p1) && isEqual(edgeI->p2, edgeK->p2)
) {
et.removeAt(k);
et.removeAt(i);
--i;
break;
}
}
}
if (ymax <= ymin)
return;
QList<const QEdge *> aet; // edges that intersects the current scanline
// if (ymin < 0)
// ymin = 0;
// if (paintEventClipRegion) // don't scan more lines than we have to
// ymax = paintEventClipRegion->boundingRect().height();
#ifdef QT_DEBUG_TESSELATOR
qDebug("==> ymin = %f, ymax = %f", ymin, ymax);
#endif // QT_DEBUG_TESSELATOR
currentY = ymin; // used by the less than op
for (qreal y = ymin; y < ymax;) {
// fill active edge table with edges that intersect the current line
for (int i = 0; i < et.size(); ++i) {
const QEdge *edge = et.at(i);
if (edge->p1.y > XDoubleToFixed(y))
break;
aet.append(edge);
et.removeAt(i);
--i;
}
// remove processed edges from active edge table
for (int i = 0; i < aet.size(); ++i) {
if (aet.at(i)->p2.y <= XDoubleToFixed(y)) {
aet.removeAt(i);
--i;
}
}
if (aet.size()%2 != 0) {
#ifndef QT_NO_DEBUG
qWarning("QX11PaintEngine: aet out of sync - this should not happen.");
#endif
return;
}
// done?
if (!aet.size()) {
if (!et.size()) {
break;
} else {
y = currentY = XFixedToDouble(et.at(0)->p1.y);
continue;
}
}
// calculate the next y where we have to start a new set of trapezoids
qreal next_y(INT_MAX/256);
for (int i = 0; i < aet.size(); ++i) {
const QEdge *edge = aet.at(i);
if (XFixedToDouble(edge->p2.y) < next_y)
next_y = XFixedToDouble(edge->p2.y);
}
if (et.size() && next_y > XFixedToDouble(et.at(0)->p1.y))
next_y = XFixedToDouble(et.at(0)->p1.y);
int aetSize = aet.size();
for (int i = 0; i < aetSize; ++i) {
for (int k = i+1; k < aetSize; ++k) {
const QEdge *edgeI = aet.at(i);
const QEdge *edgeK = aet.at(k);
qreal m1 = edgeI->m;
qreal b1 = edgeI->b;
qreal m2 = edgeK->m;
qreal b2 = edgeK->b;
if (qAbs(m1 - m2) < 0.001)
continue;
// ### intersect is not calculated correctly when optimized with -O2 (gcc)
volatile qreal intersect = 0;
if (!qIsFinite(b1))
intersect = (1.f / m2) * XFixedToDouble(edgeI->p1.x) + b2;
else if (!qIsFinite(b2))
intersect = (1.f / m1) * XFixedToDouble(edgeK->p1.x) + b1;
else
intersect = (b1*m1 - b2*m2) / (m1 - m2);
if (intersect > y && intersect < next_y)
next_y = intersect;
}
}
XFixed yf, next_yf;
yf = qrealToXFixed(y);
next_yf = qrealToXFixed(next_y);
if (yf == next_yf) {
y = currentY = next_y;
continue;
}
#ifdef QT_DEBUG_TESSELATOR
qDebug("###> y = %f, next_y = %f, %d active edges", y, next_y, aet.size());
qDebug("===> edges");
dump_edges(et);
qDebug("===> active edges");
dump_edges(aet);
#endif
// calc intersection points
QVarLengthArray<QIntersectionPoint> isects(aet.size()+1);
for (int i = 0; i < isects.size()-1; ++i) {
const QEdge *edge = aet.at(i);
isects[i].x = (edge->p1.x != edge->p2.x) ?
((y - edge->b)*edge->m) : XFixedToDouble(edge->p1.x);
isects[i].edge = edge;
}
if (isects.size()%2 != 1)
qFatal("%s: number of intersection points must be odd", Q_FUNC_INFO);
// sort intersection points
qSort(&isects[0], &isects[isects.size()-1], compareIntersections);
// qDebug() << "INTERSECTION_POINTS:";
// for (int i = 0; i < isects.size(); ++i)
// qDebug() << isects[i].edge << isects[i].x;
if (winding) {
// winding fill rule
for (int i = 0; i < isects.size()-1;) {
int winding = 0;
const QEdge *left = isects[i].edge;
const QEdge *right = 0;
winding += isects[i].edge->winding;
for (++i; i < isects.size()-1 && winding != 0; ++i) {
winding += isects[i].edge->winding;
right = isects[i].edge;
}
if (!left || !right)
break;
//painter.addTrapezoid(&toXTrapezoid(yf, next_yf, *left, *right));
traps->append(toXTrapezoid(yf, next_yf, *left, *right));
}
} else {
// odd-even fill rule
for (int i = 0; i < isects.size()-2; i += 2) {
//painter.addTrapezoid(&toXTrapezoid(yf, next_yf, *isects[i].edge, *isects[i+1].edge));
traps->append(toXTrapezoid(yf, next_yf, *isects[i].edge, *isects[i+1].edge));
}
}
y = currentY = next_y;
}
#ifdef QT_DEBUG_TESSELATOR
qDebug("==> number of trapezoids: %d - edge table size: %d\n", traps->size(), et.size());
for (int i = 0; i < traps->size(); ++i)
dump_trap(traps->at(i));
#endif
// optimize by unifying trapezoids that share left/right lines
// and have a common top/bottom edge
// for (int i = 0; i < tps.size(); ++i) {
// for (int k = i+1; k < tps.size(); ++k) {
// if (i != k && tps.at(i).right == tps.at(k).right
// && tps.at(i).left == tps.at(k).left
// && (tps.at(i).top == tps.at(k).bottom
// || tps.at(i).bottom == tps.at(k).top))
// {
// tps[i].bottom = tps.at(k).bottom;
// tps.removeAt(k);
// i = 0;
// break;
// }
// }
// }
//static int i = 0;
//QImage img = painter.end();
//img.save(QString("res%1.png").arg(i++), "PNG");
}
int QDeclarativePinch::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
{
_id = QObject::qt_metacall(_c, _id, _a);
if (_id < 0)
return _id;
if (_c == QMetaObject::InvokeMetaMethod) {
if (_id < 11)
qt_static_metacall(this, _c, _id, _a);
_id -= 11;
}
#ifndef QT_NO_PROPERTIES
else if (_c == QMetaObject::ReadProperty) {
void *_v = _a[0];
switch (_id) {
case 0: *reinterpret_cast< QGraphicsObject**>(_v) = target(); break;
case 1: *reinterpret_cast< qreal*>(_v) = minimumScale(); break;
case 2: *reinterpret_cast< qreal*>(_v) = maximumScale(); break;
case 3: *reinterpret_cast< qreal*>(_v) = minimumRotation(); break;
case 4: *reinterpret_cast< qreal*>(_v) = maximumRotation(); break;
case 5: *reinterpret_cast< Axis*>(_v) = axis(); break;
case 6: *reinterpret_cast< qreal*>(_v) = xmin(); break;
case 7: *reinterpret_cast< qreal*>(_v) = xmax(); break;
case 8: *reinterpret_cast< qreal*>(_v) = ymin(); break;
case 9: *reinterpret_cast< qreal*>(_v) = ymax(); break;
case 10: *reinterpret_cast< bool*>(_v) = active(); break;
}
_id -= 11;
} else if (_c == QMetaObject::WriteProperty) {
void *_v = _a[0];
switch (_id) {
case 0: setTarget(*reinterpret_cast< QGraphicsObject**>(_v)); break;
case 1: setMinimumScale(*reinterpret_cast< qreal*>(_v)); break;
case 2: setMaximumScale(*reinterpret_cast< qreal*>(_v)); break;
case 3: setMinimumRotation(*reinterpret_cast< qreal*>(_v)); break;
case 4: setMaximumRotation(*reinterpret_cast< qreal*>(_v)); break;
case 5: setAxis(*reinterpret_cast< Axis*>(_v)); break;
case 6: setXmin(*reinterpret_cast< qreal*>(_v)); break;
case 7: setXmax(*reinterpret_cast< qreal*>(_v)); break;
case 8: setYmin(*reinterpret_cast< qreal*>(_v)); break;
case 9: setYmax(*reinterpret_cast< qreal*>(_v)); break;
}
_id -= 11;
} else if (_c == QMetaObject::ResetProperty) {
switch (_id) {
case 0: resetTarget(); break;
}
_id -= 11;
} else if (_c == QMetaObject::QueryPropertyDesignable) {
_id -= 11;
} else if (_c == QMetaObject::QueryPropertyScriptable) {
_id -= 11;
} else if (_c == QMetaObject::QueryPropertyStored) {
_id -= 11;
} else if (_c == QMetaObject::QueryPropertyEditable) {
_id -= 11;
} else if (_c == QMetaObject::QueryPropertyUser) {
_id -= 11;
}
#endif // QT_NO_PROPERTIES
return _id;
}
void Nhdc12832::setpixel(unsigned int x, unsigned int y){
if( (x <= xmax()) && (y <= ymax()) ){
nhd_mem[x][y/8] |= mask[7-(y&0x07)];
}
}