ImmutableParallelogram

Kotlin |Java

public final class ImmutableParallelogram extends Parallelogram

java.lang.Object
↳	androidx.ink.geometry.Parallelogram
	↳	androidx.ink.geometry.ImmutableParallelogram

Immutable parallelogram (i.e. a quadrilateral with parallel sides), defined by its center, width, height, rotationDegrees, and skew.

Summary

Public methods
`boolean`	`equals(Object other)`
`static final @NonNull ImmutableParallelogram`	`fromCenterAndDimensions( @NonNull ImmutableVec center, @FloatRange(from = 0.0) float width, float height )` Constructs an `ImmutableParallelogram` with a given `center`, `width` and `height`.
`static final @NonNull ImmutableParallelogram`	`fromCenterDimensionsAndRotationInDegrees( @NonNull ImmutableVec center, @FloatRange(from = 0.0) float width, float height, @AngleDegreesFloat float rotationDegrees )` Constructs an `ImmutableParallelogram` with a given `center`, `width`, `height` and `rotationDegrees`.
`static final @NonNull ImmutableParallelogram`	`fromCenterDimensionsRotationInDegreesAndSkew( @NonNull ImmutableVec center, @FloatRange(from = 0.0) float width, float height, @AngleDegreesFloat float rotationDegrees, float skew )` Constructs an `ImmutableParallelogram` with a given `center`, `width`, `height`, `rotationDegrees` and `skew`.
`static final @NonNull ImmutableParallelogram`	`fromSegmentAndPadding(@NonNull Segment segment, float padding)` Constructs an `ImmutableParallelogram` that is aligned with the `segment` and whose bounds are `padding` units away from the segment and whose `skew` is zero.
`@NonNull ImmutableVec`	`getCenter()`
`float`	`getHeight()` The height of the `Parallelogram`.
`@FloatRange(from = 0.0, to = 360.0, toInclusive = false) float`	`getRotationDegrees()` The rotation of the `Parallelogram` in degrees from its original axis-aligned orientation in the direction from the positive x-axis towards the positive y-axis.
`float`	`getSkew()` The horizontal displacement between the two horizontal edges of the `Parallelogram` pre-rotation, as a multiple of the height.
`@FloatRange(from = 0.0) float`	`getWidth()` The width of the `Parallelogram`.
`int`	`hashCode()`
`@NonNull String`	`toString()`

Inherited methods

From androidx.ink.geometry.Parallelogram

`final @NonNull ImmutableBox`	`computeBoundingBox()` Returns the minimum bounding box containing the `Parallelogram`.
`final @NonNull MutableBox`	`computeBoundingBox(@NonNull MutableBox outBox)` Returns the minimum bounding box containing the `Parallelogram`.
`final @NonNull List<@NonNull ImmutableVec>`	`computeCorners()` Returns a list containing the 4 corners of the `Parallelogram`.
`final void`	`computeCorners( @NonNull MutableVec outCorner1, @NonNull MutableVec outCorner2, @NonNull MutableVec outCorner3, @NonNull MutableVec outCorner4 )` Populates the 4 output points with the corners of the `Parallelogram`.
`final @NonNull List<@NonNull ImmutableVec>`	`computeSemiAxes()` Returns the semi axes of this `Parallelogram`.
`final void`	`computeSemiAxes(@NonNull MutableVec outAxis1, @NonNull MutableVec outAxis2)` Fills the `MutableVec`s with the semi axes of this `Parallelogram`.
`final float`	`computeSignedArea()` Returns the signed area of the `Parallelogram`.
`final boolean`	`contains(@NonNull ImmutableVec point)` Returns whether the given point is contained within the Box.
`final boolean`	`isAlmostEqual( @NonNull Parallelogram other, @FloatRange(from = 0.0) float tolerance )` Compares this `Parallelogram` with `other`, and returns true if both `center` points are considered almost equal with the given `tolerance`, and the difference between `width` and `other.width` is less than `tolerance`, and likewise for `height`, rotation, and `skew`.

Public methods

equals

public boolean equals(Object other)

fromCenterAndDimensions

Added in 1.0.0-alpha07

public static final @NonNull ImmutableParallelogram fromCenterAndDimensions(
    @NonNull ImmutableVec center,
    @FloatRange(from = 0.0) float width,
    float height
)

Constructs an ImmutableParallelogram with a given center, width and height. The resulting Parallelogram has zero rotationDegrees and skew. If the width is less than zero, the Parallelogram will be normalized.

See the corresponding fields on Parallelogram for details about these parameters.

fromCenterDimensionsAndRotationInDegrees

Added in 1.0.0-alpha07

public static final @NonNull ImmutableParallelogram fromCenterDimensionsAndRotationInDegrees(
    @NonNull ImmutableVec center,
    @FloatRange(from = 0.0) float width,
    float height,
    @AngleDegreesFloat float rotationDegrees
)

Constructs an ImmutableParallelogram with a given center, width, height and rotationDegrees. The resulting Parallelogram has zero skew. If the width is less than zero or if the rotationDegrees is not in the range [0, 360), the Parallelogram will be normalized.

See the corresponding fields on Parallelogram for details about these parameters.

fromCenterDimensionsRotationInDegreesAndSkew

Added in 1.0.0-alpha07

public static final @NonNull ImmutableParallelogram fromCenterDimensionsRotationInDegreesAndSkew(
    @NonNull ImmutableVec center,
    @FloatRange(from = 0.0) float width,
    float height,
    @AngleDegreesFloat float rotationDegrees,
    float skew
)

Constructs an ImmutableParallelogram with a given center, width, height, rotationDegrees and skew. If the width is less than zero or if the rotationDegrees is not in the range [0, 360), the Parallelogram will be normalized.

See the corresponding fields on Parallelogram for details about these parameters.

fromSegmentAndPadding

Added in 1.0.0-alpha07

public static final @NonNull ImmutableParallelogram fromSegmentAndPadding(@NonNull Segment segment, float padding)

Constructs an ImmutableParallelogram that is aligned with the segment and whose bounds are padding units away from the segment and whose skew is zero. This makes it a rectangle, that is axis-aligned only if segment is axis-aligned.

getCenter

public @NonNull ImmutableVec getCenter()

getHeight

public float getHeight()

The height of the Parallelogram. May be positive or negative, corresponding to whether the angle from the first semi-axis to the second is also positive or negative.

getRotationDegrees

public @FloatRange(from = 0.0, to = 360.0, toInclusive = false) float getRotationDegrees()

The rotation of the Parallelogram in degrees from its original axis-aligned orientation in the direction from the positive x-axis towards the positive y-axis.

getSkew

public float getSkew()

The horizontal displacement between the two horizontal edges of the Parallelogram pre-rotation, as a multiple of the height. Equivalently, this is the cotangent of the absolute angle between the semi-axes. A Parallelogram may have a positive or negative skew, a greater skew indicates a smaller absolute angle between the semi-axes.

getWidth

public @FloatRange(from = 0.0) float getWidth()

The width of the Parallelogram. A Parallelogram may not have a negative width. If an operation on a parallelogram would result in a negative width, it is instead normalized, by negating both the width and the height, adding 180 to rotationDegrees and normalizing that to the range [0, 360).

hashCode

public int hashCode()

toString

public @NonNull String toString()