def __init__(self):
vispy.app.Canvas.__init__(self, keys='interactive', size=(800, 800))
self.images = [visuals.ImageVisual(image, method='impostor')
for i in range(4)]
self.images[0].transform = (STTransform(scale=(30, 30),
translate=(600, 600)) *
SineTransform() *
STTransform(scale=(0.1, 0.1),
translate=(-5, -5)))
tr = AffineTransform()
tr.rotate(30, (0, 0, 1))
tr.scale((3, 3))
self.images[1].transform = (STTransform(translate=(200, 600)) *
tr *
STTransform(translate=(-50, -50)))
self.images[2].transform = (STTransform(scale=(3, -150),
translate=(200, 100)) *
LogTransform((0, 2, 0)) *
STTransform(scale=(1, -0.01),
translate=(-50, 1.3)))
self.images[3].transform = (STTransform(scale=(400, 400),
translate=(600, 300)) *
PolarTransform() *
STTransform(scale=(np.pi/200, 0.005),
translate=(-3*np.pi/4., 0.1)))
for img in self.images:
img.tr_sys = TransformSystem(self)
img.tr_sys.visual_to_document = img.transform
self.show()
def __init__(self):
vispy.app.Canvas.__init__(self, keys='interactive', size=(800, 800))
# Create 4 copies of an image to be displayed with different transforms
image = get_image()
self.images = [visuals.ImageVisual(image, method='impostor')
for i in range(4)]
# Transform all images to a standard size / location (because
# get_image() might return unexpected sizes)
s = 100. / max(self.images[0].size)
tx = 0.5 * (100 - (self.images[0].size[0] * s))
ty = 0.5 * (100 - (self.images[0].size[1] * s))
base_tr = STTransform(scale=(s, s), translate=(tx, ty))
self.images[0].transform = (STTransform(scale=(30, 30),
translate=(600, 600)) *
SineTransform() *
STTransform(scale=(0.1, 0.1),
translate=(-5, -5)) *
base_tr)
tr = MatrixTransform()
tr.rotate(40, (0, 0, 1))
tr.rotate(30, (1, 0, 0))
tr.translate((0, -20, -60))
p = MatrixTransform()
p.set_perspective(0.5, 1, 0.1, 1000)
tr = p * tr
tr1 = (STTransform(translate=(200, 600)) *
tr *
STTransform(translate=(-50, -50)) *
base_tr)
self.images[1].transform = tr1
tr2 = (STTransform(scale=(3, -100), translate=(200, 50)) *
LogTransform((0, 2, 0)) *
STTransform(scale=(1, -0.01), translate=(-50, 1.1)) *
base_tr)
self.images[2].transform = tr2
tr3 = (STTransform(scale=(400, 400), translate=(570, 400)) *
PolarTransform() *
STTransform(scale=(np.pi/150, -0.005),
translate=(-3.3*np.pi/4., 0.7)) *
base_tr)
self.images[3].transform = tr3
text = visuals.TextVisual(
text=['logarithmic', 'polar', 'perspective', 'custom (sine)'],
pos=[(100, 20), (500, 20), (100, 410), (500, 410)],
color='k', font_size=16)
self.visuals = self.images + [text]
self.show()
def __init__(self):
vispy.app.Canvas.__init__(self, keys='interactive', size=(800, 800))
self.image = visuals.ImageVisual(get_image(), method='subdivide')
# scale and center image in canvas
s = 700. / max(self.image.size)
t = 0.5 * (700. - (self.image.size[0] * s)) + 50
self.image.transform = STTransform(scale=(s, s), translate=(t, 50))
self.show()
def __init__(self):
self.image = visuals.ImageVisual(image, method='subdivide')
self.image_transform = STTransform(scale=(7, 7), translate=(50, 50))
vispy.app.Canvas.__init__(self, keys='interactive')
self.size = (800, 800)
self.show()
# Create a TransformSystem that will tell the visual how to draw
self.tr_sys = TransformSystem(self)
self.tr_sys.visual_to_document = self.image_transform