FunctionsChallenge9/10A

Code

@@ -0,0 +1,64 @@
+int diam;
+PVector loc;
+PVector vel;
+
+void setup()
+{
+  size(400,400);
+  diam = 15;
+  loc = new PVector (mouseX, mouseY);
+  vel = new PVector (5,5);
+}
+
+void draw()
+{
+  println(whenXDoesYouWrong(1,9,-10));
+  println(springInMyStep(807.7,0.13,'w'));
+  println(springInMyStep(8.32,600,'x'));
+  println(springInMyStep(10,3.56,'k'));
+  followMrMouse();
+}
+
+float[] whenXDoesYouWrong(float a, float b, float c)
+{
+  float[]x = new float[2];
+  x[0] = -b + (sqrt(sq(b) - 4*a*c))/2*a;
+  x[1] = -b - (sqrt(sq(b) - 4*a*c))/2*a;
+  return x;
+}
+
+float springInMyStep (float a, float b, char isolate) 
+{
+  float result = 0;
+  if(isolate == 'w')
+  {
+    result = 0.5*a*sq(b);
+  }
+  if(isolate == 'x')
+  {
+    result = sqrt((2*b)/a);
+  }
+  if(isolate == 'k')
+  {
+    result = (2*b)/sq(a);
+  }
+  return result;
+}
+
+void followMrMouse()
+{
+  ellipse(loc.x,loc.y, diam, diam);
+  loc.add(vel);
+  if (loc.x > mouseX+20)
+  {
+    vel.x = -abs(vel.x);    
+  } else if (loc.x < mouseX-20) {
+    vel.x = abs(vel.x);    
+  }
+  if (loc.y > mouseY+20)
+  {
+    vel.y = -abs(vel.y);
+  } else if (loc.y < mouseY-20) {
+    vel.y = abs(vel.y);
+}
+}

Documentation1.md

@@ -1,19 +1,23 @@
-# Name: 
+# Name: whenXDoesYouWrong
 
 ## Examples:
-Insert examples here.
+whenXDoesYouWrong(1,9,-10)
 
 ## Description:
-Insert description here
+Solves for the negative and positive values of x in the equation x = -b + (sqrt(sq(b) - 4*a*c))/2*a given the values a, b, and c.
 
 ## Syntax:
-Demonstrate syntax here
+whenXDoesYouWrong(value1, value2, value3)
 
 ##Parameters: 
-Name and describe parameters here
+value1     float: the a value in the quadratic formula
+
+value2     float: the b value in the quadratic formula
+
+value3     float: the c value in the quadratic formula
 
 ##Returns:
-What type of data does it return?
+Returns float for positive and negative values of x.
 
 ##Other notes:
-Anything else?
+The name is a result of my dislike of the quadratic formula.

Documentation2.md

@@ -1,19 +1,27 @@
-# Name: 
+# Name: springInMyStep
 
 ## Examples:
-Insert examples here.
+springInMyStep(807.7,0.13,'w')
+
+springInMyStep(8.32,600,'x')
+
+springInMyStep(10,3.56,'k')
 
 ## Description:
-Insert description here
+Solves for the indicated variable (w, k, or x) using variations of the physics equation for work done to a spring: w = 0.5*k*sq(x).
 
 ## Syntax:
-Demonstrate syntax here
+springInMyStep (value1, value2, character)
 
 ##Parameters: 
-Name and describe parameters here
+value1      float: first numerical value
+
+value2      float: second numerical value
+
+character   float: the letter corresponding to what variable is being solved for
 
 ##Returns:
-What type of data does it return?
+Returns float for isolated variable.
 
 ##Other notes:
-Anything else?
+value1 and value2 can represent any one of the three variables because they stand for the known values, not w, k, or x individually.

Documentation3.md

@@ -1,19 +1,17 @@
-# Name: 
+# Name: followMrMouse()
 
 ## Examples:
-Insert examples here.
+followMrMouse();
 
 ## Description:
-Insert description here
+Creates an ellipse that follows the mouse in a zigzag pattern.
 
 ## Syntax:
-Demonstrate syntax here
+followMrMouse()
 
 ##Parameters: 
-Name and describe parameters here
+
 
 ##Returns:
-What type of data does it return?
 
 ##Other notes:
-Anything else?