MathUtils class
Properties
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hashCode
→ int
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The hash code for this object.
no setterinherited
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runtimeType
→ Type
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A representation of the runtime type of the object.
no setterinherited
Methods
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noSuchMethod(Invocation invocation)
→ dynamic
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Invoked when a nonexistent method or property is accessed.
inherited
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toString()
→ String
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A string representation of this object.
inherited
Static Methods
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angle2CosSlope(double angle)
→ double
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输入角度值，return cos斜率
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angle2SinSlope(double angle)
→ double
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输入角度值，return sin斜率
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calculateSlope(Offset pre, Offset next)
→ double
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计算两个坐标的斜率值
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calculateSlopeNotAbs(Offset pre, Offset next)
→ double
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计算两个坐标的斜率值
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coordinateSwitch(int fixedRotationAngle, double dx, double dy)
→ Offset
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传入直角三角形三个顶点坐标和三角形内任意一个坐标点，然后计算得到该坐标点到斜边上的高
通过求大三角形的面积，减去坐标点(x, y)垂直于三角形另外两条边形成的2个三角形面积，再除以斜边得到斜边上的高
坐标系转换(支持 90, 180, -180, -90)
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cosSlope2Angle(double cosSlope)
→ double
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输入cos斜率, return 角度值
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distanceTo(Offset pre, Offset next)
→ double
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计算两点距离
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getReverseXBySlope(double slope, Offset bOffset, double ay)
→ Offset
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斜率 = (bx - ax) / (by - ay)
逆推得到ax
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getReverseYBySlope(double slope, Offset bOffset, double ax)
→ Offset
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斜率 = (bx - ax) / (by - ay)
逆推得到ay
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getTriangularHeight(Offset rightAnglePoint, Offset other, Offset other2)
→ double
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传入直角三角形3个顶点，然后计算斜边为底的高度h
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getTriangularHeight2(double hypotenuse, double angle)
→ double
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传入直角三角形斜边和其中一个夹角，然后计算斜边为底的高度h
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insideOrOutsideOfLine(Offset pre, Offset center, Offset next)
→ int
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判断某个点是在在两个点连线的里边还是外边
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insideOrOutsideOfLine2(Offset left, Offset right, Offset point, {required bool inRight})
→ int
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判断某个点是在在两个点连线的里边还是外边2
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retrace(num x)
→ double
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输入角度值，return 弧度值
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sinSlope2Angle(double sinSlope)
→ double
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输入sin斜率, return 角度值
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trace(num x)
→ double
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输入弧度值，return 角度值
