impeller::LinearPathComponent Struct Reference

#include <path_component.h>

Public Member Functions
	LinearPathComponent ()
	LinearPathComponent (Point ap1, Point ap2)
Point	Solve (Scalar time) const
void	AppendPolylinePoints (std::vector< Point > &points) const
std::vector< Point >	Extrema () const
bool	operator== (const LinearPathComponent &other) const
std::optional< Vector2 >	GetStartDirection () const
std::optional< Vector2 >	GetEndDirection () const

Public Attributes
Point	p1
Point	p2

Detailed Description

Definition at line 39 of file path_component.h.

Constructor & Destructor Documentation

LinearPathComponent() [1/2]

impeller::LinearPathComponent::LinearPathComponent ( )

inline

Definition at line 43 of file path_component.h.

{}

LinearPathComponent() [2/2]

impeller::LinearPathComponent::LinearPathComponent ( Point  ap1, Point  ap2  )

inline

Definition at line 45 of file path_component.h.

: p1(ap1), p2(ap2) {}

Member Function Documentation

AppendPolylinePoints()

void impeller::LinearPathComponent::AppendPolylinePoints

(

std::vector< Point > &

points

)

const

Definition at line 122 of file path_component.cc.

                                    {
  if (points.size() == 0 || points.back() != p2) {
    points.push_back(p2);
  }
}

References p2.

Extrema()

std::vector< Point > impeller::LinearPathComponent::Extrema

(

)

const

Definition at line 129 of file path_component.cc.

                                                    {
  return {p1, p2};
}

References p1, and p2.

GetEndDirection()

std::optional< Vector2 > impeller::LinearPathComponent::GetEndDirection

(

)

const

Definition at line 140 of file path_component.cc.

                                                                {
  if (p1 == p2) {
    return std::nullopt;
  }
  return (p2 - p1).Normalize();
}

References p1, and p2.

Referenced by impeller::PathComponentEndDirectionVisitor::operator()().

GetStartDirection()

std::optional< Vector2 > impeller::LinearPathComponent::GetStartDirection

(

)

const

Definition at line 133 of file path_component.cc.

                                                                  {
  if (p1 == p2) {
    return std::nullopt;
  }
  return (p1 - p2).Normalize();
}

References p1, and p2.

Referenced by impeller::PathComponentStartDirectionVisitor::operator()().

operator==()

bool impeller::LinearPathComponent::operator== ( const LinearPathComponent &  other ) const

inline

Definition at line 53 of file path_component.h.

                                                          {
    return p1 == other.p1 && p2 == other.p2;
  }

References p1, and p2.

Solve()

Point impeller::LinearPathComponent::Solve

(

Scalar

time

)

const

Definition at line 115 of file path_component.cc.

                                                  {
  return {
      LinearSolve(time, p1.x, p2.x),  // x
      LinearSolve(time, p1.y, p2.y),  // y
  };
}

References impeller::LinearSolve(), p1, p2, impeller::TPoint< T >::x, and impeller::TPoint< T >::y.

Member Data Documentation

p1

Point impeller::LinearPathComponent::p1

Definition at line 40 of file path_component.h.

Referenced by Extrema(), GetEndDirection(), GetStartDirection(), operator==(), Solve(), impeller::testing::TEST(), and impeller::Path::WritePolyline().

p2

Point impeller::LinearPathComponent::p2

Definition at line 41 of file path_component.h.

Referenced by AppendPolylinePoints(), Extrema(), GetEndDirection(), GetStartDirection(), operator==(), Solve(), impeller::testing::TEST(), and impeller::Path::WritePolyline().

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The documentation for this struct was generated from the following files:

• impeller/geometry/path_component.h
• impeller/geometry/path_component.cc