DemoBezierPatchDrawer02.kt

package bezierpatch

import org.openrndr.application
import org.openrndr.color.ColorRGBa
import org.openrndr.draw.loadFont
import org.openrndr.extra.color.spaces.toOKLABa
import org.openrndr.extra.shapes.bezierpatches.bezierPatch
import org.openrndr.shape.Circle

fun main() = application {
    configure {
        width = 720
        height = 720
    }
    program {
        extend {
            drawer.clear(ColorRGBa.BLACK)
            val bp2 = bezierPatch(
                Circle(width / 2.0 - 180.0, height / 2.0, 170.0).contour
            ).withColors(
                listOf(
                    listOf(ColorRGBa.PINK, ColorRGBa.PINK, ColorRGBa.PINK, ColorRGBa.PINK),
                    listOf(ColorRGBa.RED, ColorRGBa.RED, ColorRGBa.RED, ColorRGBa.RED),
                    listOf(ColorRGBa.BLUE, ColorRGBa.BLUE, ColorRGBa.BLUE, ColorRGBa.BLUE),
                    listOf(ColorRGBa.WHITE, ColorRGBa.WHITE, ColorRGBa.WHITE, ColorRGBa.WHITE),
                )
            )
            drawer.bezierPatch(bp2)
            val bp3 = bezierPatch(
                Circle(width / 2.0 + 180.0, height / 2.0, 170.0).contour
            ).withColors(
                listOf(
                    listOf(
                        ColorRGBa.PINK.toOKLABa(),
                        ColorRGBa.PINK.toOKLABa(),
                        ColorRGBa.PINK.toOKLABa(),
                        ColorRGBa.PINK.toOKLABa()
                    ),
                    listOf(
                        ColorRGBa.RED.toOKLABa(),
                        ColorRGBa.RED.toOKLABa(),
                        ColorRGBa.RED.toOKLABa(),
                        ColorRGBa.RED.toOKLABa()
                    ),
                    listOf(
                        ColorRGBa.BLUE.toOKLABa(),
                        ColorRGBa.BLUE.toOKLABa(),
                        ColorRGBa.BLUE.toOKLABa(),
                        ColorRGBa.BLUE.toOKLABa()
                    ),
                    listOf(
                        ColorRGBa.WHITE.toOKLABa(),
                        ColorRGBa.WHITE.toOKLABa(),
                        ColorRGBa.WHITE.toOKLABa(),
                        ColorRGBa.WHITE.toOKLABa()
                    ),
                )
            )
            drawer.bezierPatch(bp3)

            drawer.fill = ColorRGBa.WHITE
            drawer.fontMap = loadFont("demo-data/fonts/IBMPlexMono-Regular.ttf", 16.0)
            drawer.text("RGB", width / 2.0 - 180.0, height / 2.0 + 200.0)
            drawer.text("OKLab", width / 2.0 + 180.0, height / 2.0 + 200.0)
        }
    }
}