Тема: PyQt4 малює не те
import sys
from PyQt4.QtGui import *
from PyQt4.QtCore import pyqtSlot
class Example(QWidget):
def __init__(self):
super(Example, self).__init__()
self.gx=1
self.gy=0
self.lbl=QLabel()
self.tlb = None
self.image = QImage(512, 512, QImage.Format_RGB32)
self.hbox = QHBoxLayout()
self.pixmap = QPixmap()
self.length = 1
self.initUI()
def mousePressEvent(self, QMouseEvent):
px = QMouseEvent.pos().x()
py = QMouseEvent.pos().y()
size = self.frameSize()
self.gx = px-size.width()/2
self.gy = py-size.height()/2
h = (self.gx**2+self.gy**2)**0.5
self.gx/=h
self.gy/=h
#self.gx*=self.length
#self.gy*=self.length
self.fillImage()
def wheelEvent(self,event):
self.length+=(event.delta()*0.001)
print(self.length)
def initUI(self):
self.hbox = QHBoxLayout(self)
self.pixmap = QPixmap()
self.move(300, 200)
self.setWindowTitle('Red Rock')
self.addedWidget = None
self.fillImage()
self.setLayout(self.hbox)
self.show()
def fillImage(self):
for x in range(0, 512):
t = -1+(x/512)*2
color = (1 - (3 - 2*abs(t))*t**2)
for y in range(0, 512):
t1 = -1+(y/512)*2
color1 = (1 - (3 - 2*abs(t1))*t1**2)
result = (255/2)+(color * color1 * (t*self.gx+t1*self.gy) )*(255/2)
result = (t*self.gx+t1*self.gy)*(255.0)
self.image.setPixel(x, y, qRgb(result, result, result))
self.pixmap = self.pixmap.fromImage(self.image)
if self.lbl == None:
self.lbl = QLabel(self)
else:
self.lbl.setPixmap(self.pixmap)
if self.addedWidget == None:
self.hbox.addWidget(self.lbl)
self.addedWidget = True
if self.tlb==None:
self.tlb = QLabel(str(self.gx)+" : "+str(self.gy), self)
self.tlb.move(12,3)
else:
self.tlb.setText(str(self.gx)+" : "+str(self.gy))
self.repaint()
self.update()
def main():
app = QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
if __name__ == '__main__':
main() чому воно малює два градієнти, коли
result = (t*self.gx+t1*self.gy)*(255.0) змінюється від -255 до 255 ?
має ж бути один градієнт, з повністю чорною першою половиною
