import org.openrndr.application
import org.openrndr.color.ColorRGBa
import org.openrndr.extensions.SingleScreenshot
import org.openrndr.extra.compositor.compose
import org.openrndr.extra.compositor.draw
import org.openrndr.extra.compositor.layer
import org.openrndr.extra.compositor.post
import org.openrndr.extra.fx.blur.GaussianBloom
import org.openrndr.extra.fx.blur.LaserBlur
import org.openrndr.extra.gui.GUI
import org.openrndr.extra.gui.addTo
import org.openrndr.extra.noise.simplex
import org.openrndr.math.Vector2
import kotlin.math.absoluteValue

suspend fun main() = application {
    configure {
        width = 1280
        height = 720
    }

    program {
        if (System.getProperty("takeScreenshot") == "true") {
            extend(SingleScreenshot()) {
                this.outputFile = System.getProperty("screenshotPath")
            }
        }

        val gui = GUI()
        val c = compose {
            layer {
                draw {
                    drawer.fill = null
                    drawer.strokeWeight = 4.0
                    drawer.translate(width/2.0, height/2.0)
                    drawer.rotate(seconds*45.0 + simplex(0, seconds)*45.0)
                    drawer.translate(-width/2.0, -height/2.0)
                    for (y in -1..1) {
                        for (x in -1..1) {
                            drawer.stroke = ColorRGBa.RED.toHSVa()
                                    .shiftHue(0.0 + simplex(500+x+y,seconds)*5.0)
                                    .shade(0.5 + 0.5 * simplex(300+x+y,seconds*4.0).absoluteValue)
                                    .toRGBa()
                            val r = simplex(400+x+y, seconds) * 150.0 + 150.0
                            drawer.circle(width / 2.0 + x * 100.0, height / 2.0 + y * 100.0, r)
                        }
                    }
                }
                post(LaserBlur()) {
                    center = Vector2(simplex(2, seconds*0.1), simplex(100, seconds*0.1))
                    aberration = simplex(5, seconds) * 0.01
                    radius = simplex(7, seconds)
                }.addTo(gui)
                post(GaussianBloom()).addTo(gui)
            }
        }
        extend(gui) {
            doubleBind = true
        }
        extend {
            c.draw(drawer)
        }
    }
}