[orx-shadestyles] Improve gradient and imageFill shadestyles

orx-shade-styles/src/jvmDemo/kotlin/image/DemoImageFill03.kt

@@ -0,0 +1,30 @@
+package image
+
+import org.openrndr.application
+import org.openrndr.draw.loadImage
+import org.openrndr.extra.shadestyles.fills.FillUnits
+import org.openrndr.extra.shadestyles.fills.SpreadMethod
+import org.openrndr.extra.shadestyles.fills.image.imageFill
+import org.openrndr.math.transforms.transform
+import kotlin.math.cos
+
+fun main() = application {
+    configure {
+        width = 720
+        height = 720
+    }
+    program {
+        var img = loadImage("demo-data/images/image-001.png")
+        extend {
+            drawer.shadeStyle = imageFill {
+                image = img
+                parameters["time"] = seconds
+                domainWarpFunction = """vec2 if_domainWarp(vec2 p) { return p + vec2(cos(p.y * 20.0 + p_time), sin(p.x * 20.0 + p_time)) * 0.1; }"""
+                spreadMethodX = SpreadMethod.REFLECT
+                spreadMethodY = SpreadMethod.REFLECT
+            }
+            drawer.circle(drawer.bounds.center, 360.0)
+        }
+    }
+}
+