PathInterpolator
open class PathInterpolator : Interpolator
kotlin.Any | |
↳ | androidx.core.animation.PathInterpolator |
An interpolator that can traverse a Path that extends from Point
(0, 0)
to (1, 1)
. The x coordinate along the Path
is the input value and the output is the y coordinate of the line at that point. This means that the Path must conform to a function y = f(x)
.
The Path
must not have gaps in the x direction and must not loop back on itself such that there can be two points sharing the same x coordinate. It is alright to have a disjoint line in the vertical direction:
Path path = new Path(); path.lineTo(0.25f, 0.25f); path.moveTo(0.25f, 0.5f); path.lineTo(1f, 1f);
Summary
Public constructors | |
---|---|
Create an interpolator for an arbitrary |
|
Create an interpolator for a quadratic Bezier curve. |
|
Create an interpolator for a cubic Bezier curve. |
|
<init>(@NonNull context: Context, @Nullable attrs: AttributeSet?, @NonNull parser: XmlPullParser) Create an interpolator from XML. |
|
<init>(@NonNull res: Resources, @Nullable theme: Theme?, @Nullable attrs: AttributeSet?, @NonNull parser: XmlPullParser) Create an interpolator from XML. |
Public methods | |
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open Float |
getInterpolation(@FloatRange(0, 1) t: Float) Using the line in the Path in this interpolator that can be described as |
Public constructors
<init>
PathInterpolator(@NonNull path: Path)
Create an interpolator for an arbitrary Path
. The Path
must begin at (0, 0)
and end at (1, 1)
.
Parameters | |
---|---|
path |
Path: The Path to use to make the line representing the interpolator. |
<init>
PathInterpolator(
controlX: Float,
controlY: Float)
Create an interpolator for a quadratic Bezier curve. The end points (0, 0)
and (1, 1)
are assumed.
Parameters | |
---|---|
controlX |
Float: The x coordinate of the quadratic Bezier control point. |
controlY |
Float: The y coordinate of the quadratic Bezier control point. |
<init>
PathInterpolator(
controlX1: Float,
controlY1: Float,
controlX2: Float,
controlY2: Float)
Create an interpolator for a cubic Bezier curve. The end points (0, 0)
and (1, 1)
are assumed.
Parameters | |
---|---|
controlX1 |
Float: The x coordinate of the first control point of the cubic Bezier. |
controlY1 |
Float: The y coordinate of the first control point of the cubic Bezier. |
controlX2 |
Float: The x coordinate of the second control point of the cubic Bezier. |
controlY2 |
Float: The y coordinate of the second control point of the cubic Bezier. |
<init>
PathInterpolator(
@NonNull context: Context,
@Nullable attrs: AttributeSet?,
@NonNull parser: XmlPullParser)
Create an interpolator from XML.
Parameters | |
---|---|
context |
Context: The context. |
attrs |
AttributeSet?: The AttributeSet for pathInterpolator. |
parser |
XmlPullParser: The XmlPullParser that was used to create the AttributeSet with android.util.Xml#asAttributeSet(XmlPullParser) . |
<init>
PathInterpolator(
@NonNull res: Resources,
@Nullable theme: Theme?,
@Nullable attrs: AttributeSet?,
@NonNull parser: XmlPullParser)
Create an interpolator from XML.
Parameters | |
---|---|
res |
Resources: The resources. |
theme |
Theme?: The theme. |
attrs |
AttributeSet?: The AttributeSet for pathInterpolator. |
parser |