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iperov 2021-10-18 16:53:53 +04:00
parent 2c61f5225b
commit 081dde23c7
1 changed files with 7 additions and 3 deletions
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10
xlib/math/Affine2DMat.py
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@ -22,6 +22,10 @@ class Affine2DMat(np.ndarray):
def __init__(self, values): def __init__(self, values):
super().__init__() super().__init__()
@staticmethod
def identity():
return Affine2DMat([[1,0,0],[0,1,0]])
@staticmethod @staticmethod
def umeyama(src, dst, estimate_scale=True): def umeyama(src, dst, estimate_scale=True):
""" """
@ -156,6 +160,9 @@ class Affine2DUniMat(Affine2DMat):
same as Affine2DMat but for transformation of uniform coordinates same as Affine2DMat but for transformation of uniform coordinates
""" """
@staticmethod
def identity(): return Affine2DMat.identity().as_uni_mat()
@staticmethod @staticmethod
def umeyama(src, dst, estimate_scale=True): return Affine2DMat.umeyama(src, dst, estimate_scale=estimate_scale).as_uni_mat() def umeyama(src, dst, estimate_scale=True): return Affine2DMat.umeyama(src, dst, estimate_scale=estimate_scale).as_uni_mat()
@ -188,11 +195,8 @@ class Affine2DUniMat(Affine2DMat):
src_pts = np.float32([(0,0),(1,0),(0,1)]) src_pts = np.float32([(0,0),(1,0),(0,1)])
dst_pts = self.transform_points(src_pts) dst_pts = self.transform_points(src_pts)
src_pts += (utw, uth) src_pts += (utw, uth)
return Affine2DUniMat.from_3_pairs(src_pts, dst_pts) return Affine2DUniMat.from_3_pairs(src_pts, dst_pts)
def to_exact_mat(self, sw : float, sh: float, tw: float, th: float) -> 'Affine2DMat': def to_exact_mat(self, sw : float, sh: float, tw: float, th: float) -> 'Affine2DMat':
""" """
calculate exact Affine2DMat using provided source and target sizes calculate exact Affine2DMat using provided source and target sizes