[orx-fx] convert to MPP

orx-fx/src/commonMain/kotlin/edges/Contour.kt

@@ -0,0 +1,35 @@
+package org.openrndr.extra.fx.edges
+
+import org.openrndr.color.ColorRGBa
+import org.openrndr.draw.Filter
+import org.openrndr.extra.fx.fx_contour
+import org.openrndr.extra.fx.mppFilterShader
+import org.openrndr.extra.parameters.ColorParameter
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.DoubleParameter
+
+@Description("Contour")
+class Contour : Filter(mppFilterShader(fx_contour, "contour")) {
+    @DoubleParameter("levels", 1.0, 16.0)
+    var levels: Double by parameters
+
+    @DoubleParameter("contour width", 0.0, 4.0)
+    var contourWidth: Double by parameters
+
+    @DoubleParameter("contour opacity", 0.0, 1.0)
+    var contourOpacity: Double by parameters
+
+    @DoubleParameter("background opacity", 0.0, 1.0)
+    var backgroundOpacity: Double by parameters
+
+    @ColorParameter("contour color")
+    var contourColor: ColorRGBa by parameters
+
+    init {
+        levels = 6.0
+        contourWidth = 0.4
+        contourColor = ColorRGBa.BLACK
+        backgroundOpacity = 1.0
+        contourOpacity = 1.0
+    }
+}

orx-fx/src/commonMain/kotlin/edges/EdgesWork.kt

@@ -0,0 +1,60 @@
+package org.openrndr.extra.fx.edges
+
+import org.openrndr.draw.*
+import org.openrndr.extra.fx.ColorBufferDescription
+import org.openrndr.extra.fx.fx_edges_work_1
+import org.openrndr.extra.fx.fx_edges_work_2
+import org.openrndr.extra.fx.mppFilterShader
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.IntParameter
+import org.openrndr.math.Vector2
+
+internal class EdgesWork1 : Filter(mppFilterShader(fx_edges_work_1, "edges-work-1")) {
+    var delta: Vector2 by parameters
+
+    init {
+        delta = Vector2.ZERO
+    }
+}
+
+@Description("Edges Work")
+open class EdgesWork : Filter(mppFilterShader(fx_edges_work_2, "edges-work-2")) {
+    /**
+     * radius, default value is 1.0
+     */
+    @IntParameter("radius", 1, 400)
+    var radius: Int by parameters
+
+    private var delta: Vector2 by parameters
+
+    private val work1 = EdgesWork1()
+
+    private var intermediateCache = mutableMapOf<ColorBufferDescription, ColorBuffer>()
+
+    init {
+        radius = 1
+        delta = Vector2.ZERO
+    }
+
+    override fun apply(source: Array<ColorBuffer>, target: Array<ColorBuffer>) {
+        val intermediateDescription = ColorBufferDescription(
+            target[0].width,
+            target[0].height,
+            target[0].contentScale,
+            target[0].format,
+            target[0].type
+        )
+        val intermediate = intermediateCache.getOrPut(intermediateDescription) {
+            colorBuffer(target[0].width, target[0].height, target[0].contentScale, target[0].format, target[0].type)
+        }
+
+        intermediate.let {
+            work1.delta = Vector2(radius / it.effectiveWidth.toDouble(), 0.0)
+            work1.apply(source, arrayOf(it))
+
+            parameters["delta"] = Vector2(0.0, radius / it.effectiveHeight.toDouble())
+            super.apply(arrayOf(it), target)
+        }
+    }
+}
+

orx-fx/src/commonMain/kotlin/edges/LumaSobel.kt

@@ -0,0 +1,31 @@
+package org.openrndr.extra.fx.edges
+
+import org.openrndr.color.ColorRGBa
+import org.openrndr.draw.Filter
+import org.openrndr.extra.fx.fx_luma_sobel
+import org.openrndr.extra.fx.mppFilterShader
+import org.openrndr.extra.parameters.ColorParameter
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.DoubleParameter
+
+@Description("Luma Sobel")
+class LumaSobel : Filter(mppFilterShader(fx_luma_sobel, "luma-sobel")) {
+    @ColorParameter("background color")
+    var backgroundColor: ColorRGBa by parameters
+
+    @ColorParameter("edge color")
+    var edgeColor: ColorRGBa by parameters
+
+    @DoubleParameter("background opacity", 0.0, 1.0)
+    var backgroundOpacity: Double by parameters
+
+    @DoubleParameter("edge opacity", 0.0, 1.0)
+    var edgeOpacity: Double by parameters
+
+    init {
+        backgroundColor = ColorRGBa.BLACK
+        edgeColor = ColorRGBa.WHITE
+        edgeOpacity = 1.0
+        backgroundOpacity = 1.0
+    }
+}