impeller::MatrixDecomposition Struct Reference

#include <matrix_decomposition.h>

Public Types
enum class	Component {   kTranslation = 1 << 0 , kScale = 1 << 1 , kShear = 1 << 2 , kPerspective = 1 << 3 ,   kRotation = 1 << 4 }

Public Member Functions
uint64_t	GetComponentsMask () const

Public Attributes
Vector3	translation
Vector3	scale
Shear	shear
Vector4	perspective
Quaternion	rotation

Detailed Description

Definition at line 15 of file matrix_decomposition.h.

Member Enumeration Documentation

Component

enum class impeller::MatrixDecomposition::Component

strong

Enumerator
kTranslation
kScale
kShear
kPerspective
kRotation

Definition at line 22 of file matrix_decomposition.h.

                       {
    kTranslation = 1 << 0,
    kScale = 1 << 1,
    kShear = 1 << 2,
    kPerspective = 1 << 3,
    kRotation = 1 << 4,
  };

Member Function Documentation

GetComponentsMask()

uint64_t impeller::MatrixDecomposition::GetComponentsMask

(

)

const

Definition at line 370 of file matrix.cc.

                                                      {
  uint64_t mask = 0;
 
  Quaternion noRotation(0.0, 0.0, 0.0, 1.0);
  if (rotation != noRotation) {
    mask = mask | static_cast<uint64_t>(Component::kRotation);
  }
 
  Vector4 defaultPerspective(0.0, 0.0, 0.0, 1.0);
  if (perspective != defaultPerspective) {
    mask = mask | static_cast<uint64_t>(Component::kPerspective);
  }
 
  Shear noShear(0.0, 0.0, 0.0);
  if (shear != noShear) {
    mask = mask | static_cast<uint64_t>(Component::kShear);
  }
 
  Vector3 defaultScale(1.0, 1.0, 1.0);
  if (scale != defaultScale) {
    mask = mask | static_cast<uint64_t>(Component::kScale);
  }
 
  Vector3 defaultTranslation(0.0, 0.0, 0.0);
  if (translation != defaultTranslation) {
    mask = mask | static_cast<uint64_t>(Component::kTranslation);
  }
 
  return mask;
}

Member Data Documentation

perspective

Vector4 impeller::MatrixDecomposition::perspective

Definition at line 19 of file matrix_decomposition.h.

rotation

Quaternion impeller::MatrixDecomposition::rotation

Definition at line 20 of file matrix_decomposition.h.

scale

Vector3 impeller::MatrixDecomposition::scale

Definition at line 17 of file matrix_decomposition.h.

shear

Shear impeller::MatrixDecomposition::shear

Definition at line 18 of file matrix_decomposition.h.

translation

Vector3 impeller::MatrixDecomposition::translation

Definition at line 16 of file matrix_decomposition.h.

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

• impeller/geometry/matrix_decomposition.h
• impeller/geometry/matrix.cc