Some api for Bezier curves.

688f49f3 · Ilya Portnov · 058665de · 688f49f3
--- a/utils/curve/bezier.py
+++ b/utils/curve/bezier.py
@@ -9,7 +9,7 @@ import numpy as np
 from sverchok.data_structure import zip_long_repeat
 from sverchok.utils.math import binomial
-from sverchok.utils.geom import Spline
+from sverchok.utils.geom import Spline, bounding_box
 from sverchok.utils.nurbs_common import SvNurbsMaths
 from sverchok.utils.curve.core import SvCurve, UnsupportedCurveTypeException
 from sverchok.utils.curve.algorithms import concatenate_curves
@@ -272,16 +272,35 @@ class SvBezierCurve(SvCurve):
            result.append(third)
        return result
+    def reparametrize(self, new_t_min, new_t_max):
+        return self.to_nurbs().reparametrize(new_t_min, new_t_max)
    def get_degree(self):
        return self.degree
    def get_control_points(self):
        return self.points
-    def elevate_degree(self, delta=1):
+    def elevate_degree(self, delta=None, target=None):
+        if delta is None and target is None:
+            delta = 1
+        if delta is not None and target is not None:
+            raise Exception("Of delta and target, only one parameter can be specified")
+        degree = self.get_degree()
+        if delta is None:
+            delta = target - degree
+            if delta < 0:
+                raise Exception(f"Curve already has degree {degree}, which is greater than target {target}")
+        if delta == 0:
+            return self
        points = elevate_bezier_degree(self.degree, self.points, delta)
        return SvBezierCurve(points)
+    def get_bounding_box(self):
+        return bounding_box(self.get_control_points())
    def to_nurbs(self, implementation = SvNurbsMaths.NATIVE):
        knotvector = sv_knotvector.generate(self.degree, len(self.points))
        return SvNurbsMaths.build_curve(implementation,
@@ -425,10 +444,29 @@ class SvCubicBezierCurve(SvCurve):
                degree = 3, knotvector = knotvector,
                control_points = control_points)
-    def elevate_degree(self, delta=1):
+    def elevate_degree(self, delta=None, target=None):
+        if delta is None and target is None:
+            delta = 1
+        if delta is not None and target is not None:
+            raise Exception("Of delta and target, only one parameter can be specified")
+        degree = self.get_degree()
+        if delta is None:
+            delta = target - degree
+            if delta < 0:
+                raise Exception(f"Curve already has degree {degree}, which is greater than target {target}")
+        if delta == 0:
+            return self
        points = elevate_bezier_degree(3, self.get_control_points(), delta)
        return SvBezierCurve(points)
+    def get_bounding_box(self):
+        return bounding_box(self.get_control_points())
+    def reparametrize(self, new_t_min, new_t_max):
+        return self.to_nurbs().reparametrize(new_t_min, new_t_max)
    def concatenate(self, curve2):
        curve2 = SvNurbsMaths.to_nurbs_curve(curve2)
        if curve2 is None: