python+matplotlib绘制简单的海豚（顶点和节点的操作）

 import matplotlib.cm as cm import matplotlib.pyplot as plt from matplotlib.patches import Circle, PathPatch from matplotlib.path import Path from matplotlib.transforms import Affine2D import numpy as np # Fixing random state for reproducibility np.random.seed(19680801) r = np.random.rand(50) t = np.random.rand(50) * np.pi * 2.0 x = r * np.cos(t) y = r * np.sin(t) fig, ax = plt.subplots(figsize=(6, 6)) circle = Circle((0, 0), 1, facecolor='none', edgecolor=(0, 0.8, 0.8), linewidth=3, alpha=0.5) ax.add_patch(circle) im = plt.imshow(np.random.random((100, 100)), origin='lower', cmap=cm.winter, interpolation='spline36', extent=([-1, 1, -1, 1])) im.set_clip_path(circle) plt.plot(x, y, 'o', color=(0.9, 0.9, 1.0), alpha=0.8) # Dolphin from OpenClipart library by Andy Fitzsimon #     #      #      #      #     dolphin = """ M -0.59739425,160.18173 C -0.62740401,160.18885 -0.57867129,160.11183 -0.57867129,160.11183 C -0.57867129,160.11183 -0.5438361,159.89315 -0.39514638,159.81496 C -0.24645668,159.73678 -0.18316813,159.71981 -0.18316813,159.71981 C -0.18316813,159.71981 -0.10322971,159.58124 -0.057804323,159.58725 C -0.029723983,159.58913 -0.061841603,159.60356 -0.071265813,159.62815 C -0.080250183,159.65325 -0.082918513,159.70554 -0.061841203,159.71248 C -0.040763903,159.7194 -0.0066711426,159.71091 0.077336307,159.73612 C 0.16879567,159.76377 0.28380306,159.86448 0.31516668,159.91533 C 0.3465303,159.96618 0.5011127,160.1771 0.5011127,160.1771 C 0.63668998,160.19238 0.67763022,160.31259 0.66556395,160.32668 C 0.65339985,160.34212 0.66350443,160.33642 0.64907098,160.33088 C 0.63463742,160.32533 0.61309688,160.297 0.5789627,160.29339 C 0.54348657,160.28968<i style="color:transparent">来源gaodai$ma#com搞$代*码*网</i> 0.52329693,160.27674 0.50728856,160.27737 C 0.49060916,160.27795 0.48965803,160.31565 0.46114204,160.33673 C 0.43329696,160.35786 0.4570711,160.39871 0.43309565,160.40685 C 0.4105108,160.41442 0.39416631,160.33027 0.3954995,160.2935 C 0.39683269,160.25672 0.43807996,160.21522 0.44567915,160.19734 C 0.45327833,160.17946 0.27946869,159.9424 -0.061852613,159.99845 C -0.083965233,160.0427 -0.26176109,160.06683 -0.26176109,160.06683 C -0.30127962,160.07028 -0.21167141,160.09731 -0.24649368,160.1011 C -0.32642366,160.11569 -0.34521187,160.06895 -0.40622293,160.0819 C -0.467234,160.09485 -0.56738444,160.17461 -0.59739425,160.18173 """ vertices = [] codes = [] parts = dolphin.split() i = 0 code_map = { 'M': (Path.MOVETO, 1), 'C': (Path.CURVE4, 3), 'L': (Path.LINETO, 1)} while i <len(parts): code = parts[i] path_code, npoints = code_map[code] codes.extend([path_code] * npoints) vertices.extend([[float(x) for x in y.split(',')] for y in parts[i + 1:i + npoints + 1]]) i += npoints + 1 vertices = np.array(vertices, float) vertices[:, 1] -= 160 dolphin_path = Path(vertices, codes) dolphin_patch = PathPatch(dolphin_path, facecolor=(0.6, 0.6, 0.6), edgecolor=(0.0, 0.0, 0.0)) ax.add_patch(dolphin_patch) vertices = Affine2D().rotate_deg(60).transform(vertices) dolphin_path2 = Path(vertices, codes) dolphin_patch2 = PathPatch(dolphin_path2, facecolor=(0.5, 0.5, 0.5), edgecolor=(0.0, 0.0, 0.0)) ax.add_patch(dolphin_patch2) plt.show()