[SOLVED] QPainterPath resize graph

Hello, I am drawing a graph with QPainterPath... Below is an image of what I want to achieve and have no idea how...
!http://i.gyazo.com/80606a19aa1ec4530ddeeb3f8184995c.png(i)!
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double step = 0.01
QPainterPath groupPath;groupPath.moveTo(10, height()  10); while(t <= 5){ x = (35 * qCos(3.14/4) * t); y = ((35 * qSin(3.14/4) * t)  (9.81 * qPow(t, 2)) / 2); groupPath.lineTo(x + 10, (height()  y)  10); groupPath.moveTo(x + 10, (height()  y)  10); t += step; } groupPath.closeSubpath();
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);painter.drawPath(groupPath);@

Hi,
You are using fixed values to determine your points (35 and 9.81) you need to take into account the width and height of your widget.
Hope it helps