V0.1

.idea/.gitignore

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+# 默认忽略的文件
+/shelf/
+/workspace.xml

.idea/inspectionProfiles/Project_Default.xml

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+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="PyPep8NamingInspection" enabled="true" level="WEAK WARNING" enabled_by_default="true">
+      <option name="ignoredErrors">
+        <list>
+          <option value="N801" />
+          <option value="N806" />
+          <option value="N802" />
+        </list>
+      </option>
+    </inspection_tool>
+    <inspection_tool class="PyUnresolvedReferencesInspection" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="ignoredIdentifiers">
+        <list>
+          <option value="float.*" />
+          <option value="int.__getitem__" />
+          <option value="int.*" />
+        </list>
+      </option>
+    </inspection_tool>
+  </profile>
+</component>

.idea/inspectionProfiles/profiles_settings.xml

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+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>

.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.8 (pycharm) (2)" project-jdk-type="Python SDK" />
+</project>

.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/pure_自适应.iml" filepath="$PROJECT_DIR$/.idea/pure_自适应.iml" />
+    </modules>
+  </component>
+</project>

.idea/pure_自适应.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="jdk" jdkName="Python 3.8 (pycharm) (2)" jdkType="Python SDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/toolchains.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="NimToolchainService">
+    <option name="rootPaths">
+      <list />
+    </option>
+  </component>
+</project>

.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

曲率.py

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+import math
+
+A = [100.012, -9.789]
+C = [100.076, -10.083]
+B = [100.043, -9.937]
+s = abs((A[0] * B[1] + B[0] * C[1] + C[0] * A[1] - A[1] * B[0] - B[1] * C[0] - C[1] * 1) / 2)
+print('s',s)
+a = abs(math.sqrt(abs(A[0] - C[0]) ** 2) + abs((A[1] - C[1]) ** 2))
+print('a',a)
+b = abs(math.sqrt(abs(B[0] - C[0]) ** 2) + abs((B[1] - C[1]) ** 2))
+print('b',b)
+c = abs(math.sqrt(a ** 2 + b ** 2))
+print('c',c)
+k = 4 * s / (a * b * c)
+print(k)
+
+# import numpy as np
+# def get_arc_curve(pts):
+# 	'''
+# 	获取弧度值
+# 	:param pts:
+# 	:return:
+# 	'''
+#
+# 	# 计算弦长
+# 	start = np.array(pts[0])
+# 	end = np.array(pts[len(pts) - 1])
+# 	l_arc = np.sqrt(np.sum(np.power(end - start, 2)))
+#
+# 	# 计算弧上的点到直线的最大距离
+# 	# 计算公式：\frac{1}{2a}\sqrt{(a+b+c)(a+b-c)(a+c-b)(b+c-a)}
+# 	a = l_arc
+# 	b = np.sqrt(np.sum(np.power(pts - start, 2), axis=1))
+# 	c = np.sqrt(np.sum(np.power(pts - end, 2), axis=1))
+# 	dist = np.sqrt((a + b + c) * (a + b - c) * (a + c - b) * (b + c - a)) / (2 * a)
+# 	h = dist.max()
+#
+# 	# 计算曲率
+# 	r = ((a * a) / 4 + h * h) / (2 * h)
+#
+# 	return r
+#
+#
+# if __name__ == '__main__':
+# 	x = np.linspace(1, 100, 99).astype(np.int64)
+# 	y = (x ** 2)
+# 	xy = list(zip(x, y))  # list of points in 2D space
+# 	print(get_arc_curve(xy))