added

common/LineAndBall_006/LineAndBall_006.pde

@@ -0,0 +1,17 @@
+float xh = 70;
+float yh = 70;
+float xo = 255;
+float yo = 55;
+
+void setup() {
+  size(300, 300);
+}
+
+void draw() {
+  background(255, 0, 0);
+  line(xh, yh, xo, yo);
+  float xf = xh + (xo - xh)/5;
+  float yf = yh + (yo - yh)/5;
+  ellipse(xf, yf, 10, 10);
+}
+

common/LineAndBall_006/sketch.properties

@@ -0,0 +1,2 @@
+mode.id=processing.mode.java.JavaMode
+mode=Java

common/LineAndBall_007/LineAndBall_007.pde

@@ -0,0 +1,17 @@
+float xh = 70;
+float yh = 70;
+float xo = 255;
+float yo = 55;
+
+void setup() {
+  size(300, 300);
+}
+
+void draw() {
+  background(255, 0, 0);
+  line(xh, yh, xo, yo);
+  float xf = xh + 0.2*(xo - xh);
+  float yf = yh + 0.2*(yo - yh);
+  ellipse(xf, yf, 10, 10);
+}
+

common/LineAndBall_007/sketch.properties

@@ -0,0 +1,2 @@
+mode.id=processing.mode.java.JavaMode
+mode=Java

common/LineAndBall_008/LineAndBall_008.pde

@@ -0,0 +1,18 @@
+float xh = 70;
+float yh = 70;
+float xo = 255;
+float yo = 55;
+
+void setup() {
+  size(300, 300);
+}
+
+void draw() {
+  background(255, 0, 0);
+  line(xh, yh, xo, yo);
+  float a = map(mouseX, 0, width, 0, 1);
+  float xf = xh + a*(xo - xh);
+  float yf = yh + a*(yo - yh);
+  ellipse(xf, yf, 10, 10);
+}
+

common/LineAndBall_008/sketch.properties

@@ -0,0 +1,2 @@
+mode.id=processing.mode.java.JavaMode
+mode=Java

common/LineAndBall_008a/LineAndBall_008a.pde

@@ -0,0 +1,19 @@
+float xh = 70;
+float yh = 70;
+float xo = 255;
+float yo = 55;
+
+void setup() {
+  size(300, 300);
+}
+
+void draw() {
+  background(255, 0, 0);
+  line(xh, yh, xo, yo);
+  float a = map(mouseX, 0, width, 0, 1);
+  float r = map(mouseY, 0, height, 1, 50);
+  float xf = xh + a*(xo - xh);
+  float yf = yh + a*(yo - yh);
+  ellipse(xf, yf, r, r);
+}
+

common/LineAndBall_008a/sketch.properties

@@ -0,0 +1,2 @@
+mode.id=processing.mode.java.JavaMode
+mode=Java

common/LineAndBall_009/LineAndBall_009.pde

@@ -0,0 +1,55 @@
+class Drop {
+  float x, y, r;
+  float vy;
+  Drop(float x, float y, float r) {
+    this.x = x;
+    this.y = y;
+    this.r = r;
+    vy = 0;
+  }
+  void update() {
+    y += vy;
+    vy += 0.2;
+  }
+  void draw() {
+    ellipse(x, y, r, r);
+  }
+}
+
+ArrayList<Drop> drops;
+
+float xh = 70;
+float yh = 70;
+float xo = 255;
+float yo = 55;
+
+void setup() {
+  size(300, 300);
+  drops = new ArrayList<Drop>();
+}
+
+void draw() {
+  background(255, 0, 0);
+//  fill(255, 0, 0, 10);
+//  rect(0, 0, width, height);
+//  fill(255);
+  line(xh, yh, xo, yo);
+  float a = map(mouseX, 0, width, 0, 1);
+  float r = map(mouseY, 0, height, 1, 50);
+  float xf = xh + a*(xo - xh);
+  float yf = yh + a*(yo - yh);
+  ellipse(xf, yf, r, r);
+
+  Drop drop = new Drop(xf, yf, r);
+  drops.add(drop);
+  int n = drops.size();
+  for (int i = n-1; 0 <= i; i--) {
+    Drop d = drops.get(i);
+    d.update();
+    d.draw();
+    if (height < d.y) {
+      drops.remove(i);
+    }
+  }
+}
+

common/LineAndBall_009/sketch.properties

@@ -0,0 +1,2 @@
+mode.id=processing.mode.java.JavaMode
+mode=Java