[orx-jumpflood] Make module multiplatform

orx-jumpflood/src/commonMain/kotlin/fx/InnerBevel.kt

@@ -0,0 +1,65 @@
+package org.openrndr.extra.jumpfill.fx
+
+import org.openrndr.draw.*
+import org.openrndr.extra.jumpfill.EncodeSubpixel
+import org.openrndr.extra.jumpfill.JumpFlooder
+import org.openrndr.extra.jumpfill.PixelDirection
+import org.openrndr.extra.jumpflood.jf_inner_bevel
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.DoubleParameter
+import org.openrndr.math.Vector2
+import org.openrndr.resourceUrl
+
+private class InnerBevelFilter : Filter(filterShaderFromCode(jf_inner_bevel, "inner-bevel")) {
+    var angle: Double by parameters
+    var width: Double by parameters
+
+    var noise:Double by parameters
+    init {
+        angle = 0.0
+        width = 5.0
+        noise = 0.0
+    }
+}
+
+@Description("Inner bevel")
+class InnerBevel : Filter() {
+    @DoubleParameter("threshold", 0.0, 1.0)
+    var threshold = 0.01
+
+    @DoubleParameter("distance scale", 0.0, 1.0)
+    var distanceScale = 1.0
+
+    @DoubleParameter("angle", -180.0, 180.0)
+    var angle = 0.0
+
+    @DoubleParameter("width", 0.0, 50.0)
+    var width = 5.0
+
+    @DoubleParameter("noise", 0.0, 1.0)
+    var noise = 0.1
+
+    private var jumpFlooder: JumpFlooder? = null
+    private val decodeFilter = PixelDirection()
+    private val bevelFilter = InnerBevelFilter()
+
+    private var distance: ColorBuffer? = null
+
+    override fun apply(source: Array<ColorBuffer>, target: Array<ColorBuffer>) {
+        if (jumpFlooder == null) {
+            jumpFlooder = JumpFlooder(target[0].width, target[0].height, encodePoints = EncodeSubpixel())
+        }
+        if (distance == null) {
+            distance = colorBuffer(target[0].width, target[0].height, type = ColorType.FLOAT32)
+        }
+        val result = jumpFlooder!!.jumpFlood(source[0])
+        decodeFilter.originalSize = Vector2(target[0].width * 1.0, target[0].height * 1.0)
+        decodeFilter.distanceScale = distanceScale
+        decodeFilter.apply(result, result)
+        result.copyTo(distance!!)
+        bevelFilter.angle = angle
+        bevelFilter.width = width
+        bevelFilter.noise = noise
+        bevelFilter.apply(arrayOf(source[0], distance!!), target[0])
+    }
+}