io.data2viz.shape.Symbol.kt Maven / Gradle / Ivy
/*
* Copyright (c) 2018-2019. data2viz sàrl.
*
* 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 io.data2viz.shape
import io.data2viz.geom.Path
import io.data2viz.shape.symbol.*
interface Symbol {
fun render(path: C, size: Double): C
}
enum class Symbols {
Circle, Cross, Diamond, Square, Star, Triangle, Wye
}
val Symbols.symbol: Symbol
get() = when (this) {
Symbols.Cross -> Cross()
Symbols.Diamond -> Diamond()
Symbols.Square -> Square()
Symbols.Star -> Star()
Symbols.Triangle -> Triangle()
Symbols.Wye -> Wye()
else -> Circle()
}
fun render(init: SymbolGenerator.() -> Unit) = SymbolGenerator().apply(init)
class SymbolGenerator {
var size: (T) -> Double = const(64.0)
var type: (T) -> Symbol = { Circle() }
fun render(args: T, path: C): C {
type(args).render(path, size(args))
return path
}
}