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

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)
        }
    }
}