A Vector2, broken down as a separate magnitude and direction. Assumes that the direction given is normalized. More...

#include <separated_vector.h>

Public Member Functions
	SeparatedVector2 ()

	SeparatedVector2 (Vector2 direction, Scalar magnitude)

	SeparatedVector2 (Vector2 vector)

Vector2	GetVector () const
	Returns the vector representation of the vector. More...

Vector2	GetDirection () const
	Returns just the normalized direction vector. More...

Scalar	GetAlignment (const SeparatedVector2 &other) const

Radians	AngleTo (const SeparatedVector2 &other) const
	Returns the scalar angle between the two rays. More...

Scalar	Cross (const SeparatedVector2 &other) const
	Returns the cross product of the two direction vectors. More...

Public Attributes
Vector2	direction
	The normalized direction of the vector. More...

Scalar	magnitude = 0.0
	The magnitude of the vector. More...

Detailed Description

A Vector2, broken down as a separate magnitude and direction. Assumes that the direction given is normalized.

This is a simple convenience struct for handling polyline offset values when generating stroke geometry. For performance reasons, it's sometimes adventageous to track the direction and magnitude for offsets separately.

Definition at line 21 of file separated_vector.h.

Constructor & Destructor Documentation

◆ SeparatedVector2() [1/3]

impeller::SeparatedVector2::SeparatedVector2 ( )

default

◆ SeparatedVector2() [2/3]

impeller::SeparatedVector2::SeparatedVector2	(	Vector2	direction,
		Scalar	magnitude
	)

Definition at line 11 of file separated_vector.cc.

12 : direction(direction), magnitude(magnitude){};

impeller::SeparatedVector2::direction

Vector2 direction

The normalized direction of the vector.

Definition: separated_vector.h:23

impeller::SeparatedVector2::magnitude

Scalar magnitude

The magnitude of the vector.

Definition: separated_vector.h:26

◆ SeparatedVector2() [3/3]

impeller::SeparatedVector2::SeparatedVector2 ( Vector2 vector )

explicit

Definition at line 14 of file separated_vector.cc.

15 : direction(vector.Normalize()), magnitude(vector.GetLength()){};

Member Function Documentation

◆ AngleTo()

Radians impeller::SeparatedVector2::AngleTo ( const SeparatedVector2 & other ) const

Returns the scalar angle between the two rays.

Definition at line 29 of file separated_vector.cc.

                                                                      {
   return direction.AngleTo(other.direction);
 }

References impeller::TPoint< T >::AngleTo(), and direction.

Referenced by impeller::testing::TEST().

◆ Cross()

Scalar impeller::SeparatedVector2::Cross ( const SeparatedVector2 & other ) const

Returns the cross product of the two direction vectors.

Definition at line 33 of file separated_vector.cc.

                                                                   {
   return direction.Cross(other.direction);
 }

References impeller::TPoint< T >::Cross(), and direction.

◆ GetAlignment()

Scalar impeller::SeparatedVector2::GetAlignment ( const SeparatedVector2 & other ) const

Returns the scalar alignment of the two vectors. In other words, the dot product of the two normalized vectors.

Range: [-1, 1] A value of 1 indicates the directions are parallel and pointing in the same direction. A value of -1 indicates the vectors are parallel and pointing in opposite directions. A value of 0 indicates the vectors are perpendicular.

Definition at line 25 of file separated_vector.cc.

                                                                          {
   return direction.Dot(other.direction);
 }

References direction, and impeller::TPoint< T >::Dot().

Referenced by impeller::StrokePathSegmentReceiver::RecordCurveSegment(), and impeller::testing::TEST().

◆ GetDirection()

Vector2 impeller::SeparatedVector2::GetDirection ( ) const

Returns just the normalized direction vector.

Definition at line 21 of file separated_vector.cc.

                                              {
   return direction;
 }

References direction.

◆ GetVector()

Vector2 impeller::SeparatedVector2::GetVector ( ) const

Returns the vector representation of the vector.

Definition at line 17 of file separated_vector.cc.

                                           {
   return direction * magnitude;
 }

References direction, and magnitude.

Referenced by impeller::StrokePathSegmentReceiver::EndContour(), and impeller::testing::TEST().

Member Data Documentation

◆ direction

Vector2 impeller::SeparatedVector2::direction

The normalized direction of the vector.

Definition at line 23 of file separated_vector.h.

Referenced by AngleTo(), Cross(), GetAlignment(), GetDirection(), GetVector(), and impeller::testing::TEST().

◆ magnitude

Scalar impeller::SeparatedVector2::magnitude = 0.0