def draw_image(self, painter, canvasRect, srcRect, dstRect, xMap, yMap):
# normally we use this method indirectly from quiqwt which takes the burden of constructing
# the right parameters. if we want to call this method manually, eg for painting on on a
# QPixmap for saving the image, we just use the last set of parmeters passed to this
# method, this is much easier than constructing the params seperatly, and so we get the
# exact same result as we see on screen:
self.last_canvas_rect = canvasRect
self.last_src_rect = srcRect
self.last_dst_rect = dstRect
self.last_xmap = xMap
self.last_ymap = yMap
rtmin, mzmax, rtmax, mzmin = srcRect
x1, y1 = canvasRect.left(), canvasRect.top()
x2, y2 = canvasRect.right(), canvasRect.bottom()
NX = x2 - x1
NY = y2 - y1
rtmin, mzmax, rtmax, mzmin = srcRect
image = self.compute_image(0, NX, NY, rtmin, rtmax, mzmin,
mzmax)[::-1, :]
image2 = self.compute_image(1, NX, NY, rtmin, rtmax, mzmin,
mzmax)[::-1, :]
dilated = dilate(image.astype(np.int32), mzmax, mzmin)
dilated2 = dilate(image2.astype(np.int32), mzmax, mzmin)
self.data = np.zeros_like(dilated, dtype=np.uint32)[::-1, :]
# add image as rgb(255, 255, 0): first we add red, then green which yields yellow:
self.data += dilated * 256 * 256
# plus red:
self.data += dilated * 256
# add image2 as rgb(0, 0, 256) which is blue:
self.data += dilated2
self.data |= 255 << 24
self.bounds = QRectF(rtmin, mzmin, rtmax - rtmin, mzmax - mzmin)
RGBImageItem.draw_image(self, painter, canvasRect, srcRect, dstRect,
xMap, yMap)
def draw_image(self, painter, canvasRect, srcRect, dstRect, xMap, yMap):
# normally we use this method indirectly from quiqwt which takes the burden of constructing
# the right parameters. if we want to call this method manually, eg for painting on on a
# QPixmap for saving the image, we just use the last set of parmeters passed to this
# method, this is much easier than constructing the params seperatly, and so we get the
# exact same result as we see on screen:
self.last_canvas_rect = canvasRect
self.last_src_rect = srcRect
self.last_dst_rect = dstRect
self.last_xmap = xMap
self.last_ymap = yMap
rtmin, mzmax, rtmax, mzmin = srcRect
x1, y1 = canvasRect.left(), canvasRect.top()
x2, y2 = canvasRect.right(), canvasRect.bottom()
NX = x2 - x1
NY = y2 - y1
rtmin, mzmax, rtmax, mzmin = srcRect
image = self.compute_image(0, NX, NY, rtmin, rtmax, mzmin, mzmax)[::-1, :]
image2 = self.compute_image(1, NX, NY, rtmin, rtmax, mzmin, mzmax)[::-1, :]
dilated = dilate(image.astype(np.int32), mzmax, mzmin)
dilated2 = dilate(image2.astype(np.int32), mzmax, mzmin)
self.data = np.zeros_like(dilated, dtype=np.uint32)[::-1, :]
# add image as rgb(255, 255, 0): first we add red, then green which yields yellow:
self.data += dilated * 256 * 256
# plus red:
self.data += dilated * 256
# add image2 as rgb(0, 0, 256) which is blue:
self.data += dilated2
self.data |= 255 << 24
self.bounds = QRectF(rtmin, mzmin, rtmax - rtmin, mzmax - mzmin)
RGBImageItem.draw_image(self, painter, canvasRect, srcRect, dstRect, xMap, yMap)
