def add_image_transform(self, ctx):
image_width, image_height = ctx.image_transformer.dest_size
if image_height < image_width:
sx, sy = image_width / image_height, 1
else:
sx, sy = 1, image_height / image_width
mat3.do_scale_(ctx.image_transformer.matrix, sx, sy)
def add_image_transform(self, ctx):
mat3.do_scale_(ctx.image_transformer.matrix, self.sx, self.sy)
def add_camera_transform(self, ctx):
mat3.do_scale_(ctx.camera_transformer.matrix, self.sx, self.sy)
def add_image_transform(self, ctx):
old_dest_size = ctx.image_transformer.dest_size
new_dest_size = ctx.image_transformer.set_output_size(
self.out_width, self.out_height)
scale = new_dest_size / old_dest_size
mat3.do_scale_(ctx.image_transformer.matrix, scale[0], scale[1])
def test_scale(self, m, sx, sy):
m[2] = [0, 0, 1]
expected = mat3.concatenate([m, mat3.scale(sx, sy)])
actual = m.copy()
mat3.do_scale_(actual, sx, sy)
assert_array_almost_equal(actual, expected)