Update demos to use MouseTracker (#303)

orx-jumpflood/src/jvmDemo/kotlin/DemoDirectionField01.kt

@@ -1,3 +1,4 @@
+import org.openrndr.MouseTracker
 import org.openrndr.application
 import org.openrndr.color.ColorRGBa
 import org.openrndr.draw.*
@@ -37,6 +38,7 @@ fun main() = application {
                 //x_fill.rgb = vec3(1.0 / (x_fill.r + x_fill.g));
             """
         }
+        val mouseTracker = MouseTracker(mouse)
 
         extend {
             // Draw moving white shapes on a black background
@@ -68,7 +70,7 @@ fun main() = application {
             directionalField.apply(rt.colorBuffer(0), result)
 
             drawer.isolated {
-                if (mouse.pressedButtons.isEmpty()) {
+                if (mouseTracker.pressedButtons.isEmpty()) {
                     shadeStyle = shader
                     image(result)
                 } else {

orx-jumpflood/src/jvmDemo/kotlin/DemoDistanceField01.kt

@@ -1,3 +1,4 @@
+import org.openrndr.MouseTracker
 import org.openrndr.application
 import org.openrndr.color.ColorRGBa
 import org.openrndr.draw.*
@@ -42,6 +43,7 @@ fun main() = application {
                     vec3(1.0, 0.0, 0.0) : vec3(0.0, 1.0, 1.0));
             """
         }
+        val mouseTracker = MouseTracker(mouse)
 
         extend {
             // Draw moving white shapes on a black background
@@ -73,7 +75,7 @@ fun main() = application {
             distanceField.apply(rt.colorBuffer(0), result)
 
             drawer.isolated {
-                if (mouse.pressedButtons.isEmpty()) {
+                if (mouseTracker.pressedButtons.isEmpty()) {
                     shadeStyle = shader
                     image(result)
                 } else {

orx-jumpflood/src/jvmDemo/kotlin/DemoShapeSDF01.kt

@@ -1,3 +1,4 @@
+import org.openrndr.MouseTracker
 import org.openrndr.application
 import org.openrndr.draw.ColorFormat
 import org.openrndr.draw.ColorType
@@ -19,8 +20,10 @@ fun main() {
             sdf.setShapes(shapes)
             sdf.apply(emptyArray(), df)
 
+            val mouseTracker = MouseTracker(mouse)
+
             extend {
-                if(mouse.pressedButtons.isEmpty())
+                if(mouseTracker.pressedButtons.isEmpty())
                     drawer.image(df)
                 else
                     drawer.shapes(shapes)

orx-jvm/orx-minim/src/demo/kotlin/DemoAdditive01.kt

@@ -1,5 +1,6 @@
 import ddf.minim.ugens.Oscil
 import ddf.minim.ugens.Pan
+import org.openrndr.MouseTracker
 import org.openrndr.application
 import org.openrndr.color.rgb
 import org.openrndr.extra.minim.minim
@@ -31,7 +32,7 @@ fun main() {
             // and the current amplitude defined by the lfo (low frequency
             // oscillator).
             val synths = List(20) {
-                // By default Oscil creates sine waves, but it can be changed.
+                // By default, Oscil creates sine waves, but it can be changed.
                 val lfo = Oscil(
                     Random.nextFloat() * 0.1f + 0.005f,
                     0.05f
@@ -56,6 +57,7 @@ fun main() {
             }
             val bgColor = rgb(0.094, 0.188, 0.349)
             val lineColor = rgb(0.992, 0.918, 0.671)
+            val mouseTracker = MouseTracker(mouse)
 
             extend {
                 drawer.clear(bgColor)
@@ -78,7 +80,7 @@ fun main() {
                         circle(pos, 500 * lfo.lastValues.last().toDouble())
                     }
                 }
-                if (mouse.pressedButtons.isNotEmpty()) {
+                if (mouseTracker.pressedButtons.isNotEmpty()) {
                     synths.random().first.setFrequency(randomFreq())
                 }
             }

orx-jvm/orx-poisson-fill/src/demo/kotlin/DemoPoissonFill01.kt

@@ -1,4 +1,5 @@
 import org.openrndr.MouseButton
+import org.openrndr.MouseTracker
 import org.openrndr.application
 import org.openrndr.color.ColorHSVa
 import org.openrndr.color.ColorRGBa
@@ -41,6 +42,7 @@ fun main() {
                                 100.0 + it * 10.0),
                         Polar(Random.double(-1.0, 1.0), 0.0))
             }
+            val mouseTracker = MouseTracker(mouse)
 
             extend {
                 drawer.isolatedWithTarget(dry) {
@@ -61,7 +63,7 @@ fun main() {
 
                     // draw dark gray window border.
                     // hold mouse button to fade in.
-                    borderOpacity += if (MouseButton.LEFT in mouse.pressedButtons) 0.01 else -0.01
+                    borderOpacity += if (MouseButton.LEFT in mouseTracker.pressedButtons) 0.01 else -0.01
                     borderOpacity = borderOpacity.clamp(0.0, 1.0)
                     stroke = rgb(0.2).opacify(borderOpacity)
                     fill = null