PathFillType.kt
/*
* Copyright 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.compose.ui.graphics
import androidx.compose.runtime.Immutable
/**
* Determines the winding rule that decides how the interior of a [Path] is
* calculated.
*
* This enum is used by the [Path.fillType] property.
*/
@Immutable
@kotlin.jvm.JvmInline
value class PathFillType internal constructor(@Suppress("unused") private val value: Int) {
companion object {
/**
* The interior is defined by a non-zero sum of signed edge crossings.
*
* For a given point, the point is considered to be on the inside of the path
* if a line drawn from the point to infinity crosses lines going clockwise
* around the point a different number of times than it crosses lines going
* counter-clockwise around that point.
*
* See: <https://en.wikipedia.org/wiki/Nonzero-rule>
*/
val NonZero = PathFillType(0)
/**
* The interior is defined by an odd number of edge crossings.
*
* For a given point, the point is considered to be on the inside of the path
* if a line drawn from the point to infinity crosses an odd number of lines.
*
* See: <https://en.wikipedia.org/wiki/Even-odd_rule>
*/
val EvenOdd = PathFillType(1)
}
override fun toString() = when (this) {
NonZero -> "NonZero"
EvenOdd -> "EvenOdd"
else -> "Unknown"
}
}