Struct Matrix 

pub struct Matrix {
    pub a: Fixed16,
    pub b: Fixed16,
    pub c: Fixed16,
    pub d: Fixed16,
    pub tx: Twips,
    pub ty: Twips,
}

The transformation matrix used by Flash display objects.

The matrix is a 2x3 affine transformation matrix. A point (x, y) is transformed by the matrix in the following way:

 [a c tx] *  [x] = [a*x + c*y + tx]
 [b d ty]    [y]   [b*x + d*y + ty]
 [0 0 1 ]    [1]   [1             ]

The SWF format uses 16.16 format for a, b, c, d. Twips are used for tx and ty. This means that objects in Flash can only move in units of twips, or 1/20 pixels.

SWF19 pp.22-24

Fields

a: Fixed16

The matrix element at [0, 0]. Labeled ScaleX in SWF19.

b: Fixed16

The matrix element at [1, 0]. Labeled RotateSkew0 in SWF19.

c: Fixed16

The matrix element at [0, 1]. Labeled RotateSkew1 in SWF19.

d: Fixed16

The matrix element at [1, 1]. Labeled ScaleY in SWF19.

tx: Twips

The X translation in twips. Labeled TranslateX in SWF19.

ty: Twips

The Y translation in twips. Labeled TranslateX in SWF19.

Implementations

impl Matrix

pub const IDENTITY: Self

The identity matrix.

Transforming an object by this matrix has no effect.

pub const fn scale(scale_x: Fixed16, scale_y: Fixed16) -> Self

Returns a scale matrix.

pub fn rotate(angle: f32) -> Self

Returns a rotation matrix that rotates by angle radians.

pub const fn translate(x: Twips, y: Twips) -> Self

Returns a translation matrix.

pub fn invert(&mut self)

Inverts the matrix.

If the matrix is not invertible, the resulting matrix will be invalid.

Trait Implementations

impl Clone for Matrix

fn clone(&self) -> Matrix

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Matrix

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Matrix

fn default() -> Matrix

Returns the “default value” for a type.

impl Hash for Matrix

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Mul<Point<Twips>> for Matrix

type Output = Point<Twips>

The resulting type after applying the * operator.

fn mul(self, point: Point<Twips>) -> Point<Twips>

Performs the * operation.

impl Mul for Matrix

type Output = Matrix

The resulting type after applying the * operator.

fn mul(self, rhs: Self) -> Self

Performs the * operation.

impl MulAssign for Matrix

fn mul_assign(&mut self, rhs: Self)

Performs the *= operation.

impl PartialEq for Matrix

fn eq(&self, other: &Matrix) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Matrix

impl Eq for Matrix

impl StructuralPartialEq for Matrix