Class: CMRotationMatrix
Overview
The type of a structure representing a rotation matrix.
Instance Attribute Summary (collapse)
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- m11
Each field in this structure defines an element of the rotation matrix by its position.
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- m12
A value for the X-axis.
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- m13
A value for the Y-axis.
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- m21
A value for the Z-axis.
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- m22
A value for the W-axis.
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- m23
Describes a reference frame in which the Z axis is vertical and the X axis points in an arbitrary direction in the horizontal plane.Available in iOS 5.0 and later.Declared in CMAttitude.h.
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- m31
Describes the same reference frame as CMAttitudeReferenceFrameXArbitraryZVertical except that the magnetometer, when available and calibrated, is used to improve long-term yaw accuracy.
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- m32
Describes a reference frame in which the Z axis is vertical and the X axis points toward magnetic north.
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- m33
Describes a reference frame in which the Z axis is vertical and the X axis points toward true north.
Method Summary
Methods inherited from Boxed
Methods inherited from NSObject
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Constructor Details
This class inherits a constructor from NSObject
Dynamic Method Handling
This class handles dynamic methods through the method_missing method in the class NSObject
Instance Attribute Details
- (Float) m11
Each field in this structure defines an element of the rotation matrix by its position. For example, m11 is the element in row 1, column 1; m31 is the element in row 3, column 1; m13 is the element in row 1, column 3.
- (Float) m12
A value for the X-axis.
- (Float) m13
A value for the Y-axis.
- (Float) m21
A value for the Z-axis.
- (Float) m22
A value for the W-axis.
- (Float) m23
Describes a reference frame in which the Z axis is vertical and the X axis points in an arbitrary direction in the horizontal plane.Available in iOS 5.0 and later.Declared in CMAttitude.h.
- (Float) m31
Describes the same reference frame as CMAttitudeReferenceFrameXArbitraryZVertical except that the magnetometer, when available and calibrated, is used to improve long-term yaw accuracy. Using this constant instead of CMAttitudeReferenceFrameXArbitraryZVertical results in increased CPU usage.Available in iOS 5.0 and later.Declared in CMAttitude.h.
- (Float) m32
Describes a reference frame in which the Z axis is vertical and the X axis points toward magnetic north. Note that using this reference frame may require device movement to calibrate the magnetometer.Available in iOS 5.0 and later.Declared in CMAttitude.h.
- (Float) m33
Describes a reference frame in which the Z axis is vertical and the X axis points toward true north. Note that using this reference frame may require device movement to calibrate the magnetometer. It also requires the location to be available in order to calculate the difference between magnetic and true north.Available in iOS 5.0 and later.Declared in CMAttitude.h.