DemoAdjustContourContinue01.kt

package adjust

import kotlinx.coroutines.yield
import org.openrndr.application
import org.openrndr.color.ColorRGBa
import org.openrndr.extra.shapes.adjust.adjustContourSequence
import org.openrndr.extra.shapes.tunni.tunniLine
import org.openrndr.extra.shapes.tunni.tunniPoint
import org.openrndr.extra.shapes.tunni.withTunniLine
import org.openrndr.launch
import org.openrndr.math.Vector2
import org.openrndr.shape.Segment2D
import kotlin.math.cos

fun main() {
    application {
        configure {
            width = 800
            height = 800
        }
        program {

            var res = drawer.bounds.offsetEdges(-200.0).contour
            var selectedSegments = emptyList<Segment2D>()
            var selectedPoints = emptyList<Vector2>()

            val contourSeq = adjustContourSequence(res) {

                sequence {
                    for (i in 0 until 1000) {
                        selectEdges()
                        selectVertices((i*7).mod(4))
                        for (v in vertices) {
                            for (j in 0 until 30) {
                                v.rotate(45.0/30.0)
                                yield(status)
                            }
                        }

                        selectVertices((i*3).mod(4))
                        for (v in vertices) {
                            yield(status)

                        }


                        selectVertices()
                        selectEdges(i.mod(4))
                        for (j in 0 until 30) {
                            for (e in edges) {
                                e.withTunniLine(e.tunniLine.position(0.5) + e.tunniLine.normal * cos(i.toDouble() + e.segmentIndex()) * 50.0/30.0)
                                yield(status)
                            }
                        }
                    }
                }
            }

            launch {
                for (i in contourSeq) {
                    res = i.contour
                    selectedPoints = i.selectedPoints
                    selectedSegments = i.selectedSegments
                    yield()
                }
            }


            extend {
                drawer.clear(ColorRGBa.WHITE)
                drawer.stroke = ColorRGBa.BLACK
                drawer.contour(res)

                drawer.stroke = ColorRGBa.RED

                for (s in res.segments) {
                    drawer.lineSegment(s.start, s.cubic.control[0])
                    drawer.lineSegment(s.end, s.cubic.control[1])
                }
                drawer.fill = ColorRGBa.BLACK
                drawer.stroke = null
                drawer.circles(res.segments.map { it.start }, 5.0)

                drawer.stroke = ColorRGBa.GRAY
                for (s in res.segments) {
                    drawer.lineSegment(s.tunniLine)
                    drawer.fill = ColorRGBa.CYAN
                    drawer.circle(s.tunniPoint, 5.0)
                }

                drawer.stroke = ColorRGBa.MAGENTA
                drawer.strokeWeight = 3.0
                for (s in selectedSegments) {
                    drawer.segment(s)
                }
                for (p in selectedPoints) {
                    drawer.circle(p, 5.0)
                }
            }
        }
    }
}