[openrndr-demos] Add rectangle batch demos

openrndr-demos/src/demo/kotlin/DemoCompositionDrawer01.kt

@@ -1,36 +1,36 @@
 import org.openrndr.application
 import org.openrndr.color.ColorRGBa
 import org.openrndr.math.Vector2
-import org.openrndr.shape.CompositionDrawer
+import org.openrndr.shape.drawComposition
+import org.openrndr.svg.svgNamespaceInkscape
+import org.openrndr.svg.toSVG
 import org.openrndr.svg.writeSVG
 
 fun main() {
     application {
         program {
-
             extend {
-
                 drawer.clear(ColorRGBa.WHITE)
 
-                val cd = CompositionDrawer()
-                val layer = cd.group {
-                    fill = ColorRGBa.PINK
-                    stroke = ColorRGBa.BLACK
-                    strokeWeight = 10.0
-                    circle(Vector2(width/2.0, height/2.0), 100.0)
-                    circle(Vector2(200.0, 200.0), 50.0)
+                val composition = drawComposition {
+                    val layer = group {
+                        fill = ColorRGBa.PINK
+                        stroke = ColorRGBa.BLACK
+                        strokeWeight = 10.0
+                        circle(Vector2(width / 2.0, height / 2.0), 100.0)
+                        circle(Vector2(200.0, 200.0), 50.0)
+                    }
+                    // demonstrating how to set custom attributes on the CompositionNode
+                    // these are stored in SVG
+                    layer.id = "Layer_2"
+                    layer.attributes["inkscape:label"] = "Layer 1"
+                    layer.attributes["inkscape:groupmode"] = "layer"
                 }
-                // demonstrating how to set custom attributes on the CompositionNode
-                // these are stored in SVG
-                layer.id = "Layer_2"
-                layer.attributes["openrndr:custom"] = "5"
-
                 // draw the composition to the screen
-                drawer.composition(cd.composition)
+                drawer.composition(composition)
 
                 // print the svg to the console
-                println(writeSVG(cd.composition))
-
+                println(composition.toSVG(namespaces = listOf(svgNamespaceInkscape)))
             }
         }
     }

openrndr-demos/src/demo/kotlin/DemoVolumeTexture01.kt

@@ -3,14 +3,8 @@ import org.openrndr.color.ColorRGBa
 import org.openrndr.draw.*
 import org.openrndr.extensions.Screenshots
 
-
 fun main() = application {
     program {
-
-        val screenshots = extend(Screenshots()) {
-
-        }
-
         val volumeTexture = VolumeTexture.create(128,128,32)
         val rt = renderTarget(128, 128) {
             volumeTexture(volumeTexture, 0)
@@ -18,9 +12,6 @@ fun main() = application {
 
         val cb = colorBuffer(128, 128)
         extend {
-
-            screenshots.afterScreenshot
-
             drawer.isolatedWithTarget(rt) {
                 drawer.ortho(rt)
                 drawer.clear(ColorRGBa.PINK)
@@ -28,6 +19,5 @@ fun main() = application {
             volumeTexture.copyTo(cb, 0)
             drawer.image(cb)
         }
-
     }
 }

openrndr-demos/src/demo/kotlin/DrawerRectangleBatch01.kt

@@ -0,0 +1,16 @@
+// A single rectangle
+
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+
+fun main() = application {
+    program {
+        extend {
+            drawer.clear(ColorRGBa.GRAY)
+            drawer.fill = ColorRGBa.PINK
+            drawer.stroke = ColorRGBa.WHITE
+            drawer.strokeWeight = 2.0
+            drawer.rectangle(100.0, 100.0, 50.0, 50.0)
+        }
+    }
+}

openrndr-demos/src/demo/kotlin/DrawerRectangleBatch02.kt

@@ -0,0 +1,29 @@
+// Stored rectangle batches
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.draw.rectangleBatch
+
+fun main() = application {
+    program {
+        val batch = drawer.rectangleBatch {
+            fill = ColorRGBa.PINK
+            stroke = ColorRGBa.WHITE
+            for (i in 0 until 1000) {
+                strokeWeight = Math.random() * 5.0 + 1.0
+                val rwidth = Math.random() * 40.0 + 4.0
+                val rheight = Math.random() * 40.0 + 4.0
+                val x = Math.random() * width
+                val y = Math.random() * height
+                rectangle(x, y, rwidth, rheight, Math.random() * 360.0)
+            }
+        }
+
+        extend {
+            drawer.clear(ColorRGBa.GRAY)
+            drawer.fill = ColorRGBa.PINK
+            drawer.stroke = ColorRGBa.WHITE
+            drawer.strokeWeight = 2.0
+            drawer.rectangles(batch)
+        }
+    }
+}

openrndr-demos/src/demo/kotlin/DrawerRectangleBatch03.kt

@@ -0,0 +1,23 @@
+// Dynamic rectangle batches
+
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+
+fun main() = application {
+    program {
+        extend {
+            drawer.clear(ColorRGBa.GRAY)
+            drawer.fill = ColorRGBa.PINK
+            drawer.stroke = ColorRGBa.WHITE
+            drawer.strokeWeight = 2.0
+            drawer.rectangles {
+                for (y in 0 until height/20) {
+                    for (x in 0 until width/20) {
+                        rectangle(x * 20.0, y * 20.0, 10.0, 15.0, (x + y) * 10.0 + seconds*90.0)
+
+                    }
+                }
+            }
+        }
+    }
+}