public override void TouchesBegan(NSSet touches, UIEvent evt)
{
if (evt.TouchesForView(this).Count == 2 && linesInProcess.Count < 1)
{
bool firstTouch = true;
Circle newCircle = new Circle();
string key = "";
foreach (UITouch t in touches)
{
// Is this a double tap?
if (t.TapCount > 1)
{
this.clearAll();
return;
}
// Create a circle for the value
CGPoint loc = t.LocationInView(this);
if (firstTouch)
{
// Use the touch object (packed in an string, as the key)
key = NSValue.ValueFromNonretainedObject(t).ToString();
newCircle.center = loc;
firstTouch = false;
}
else
{
newCircle.point2 = loc;
}
}
newCircle.setColor();
circlesInProcess.Add(key, newCircle);
}
else
{
foreach (UITouch t in touches)
{
// Is this a double tap?
if (t.TapCount > 1)
{
this.clearAll();
return;
}
// Use the touch object (packed in an string, as the key)
string key = NSValue.ValueFromNonretainedObject(t).ToString();
// Create a line for the value
CGPoint loc = t.LocationInView(this);
Line newLine = new Line();
newLine.begin = loc;
newLine.end = loc;
// Put pair in dictionary
newLine.setColor();
linesInProcess.Add(key, newLine);
}
}
this.SetNeedsDisplay();
}
public override void TouchesBegan(NSSet touches, UIEvent evt)
{
foreach (UITouch t in touches)
{
// // Is this a double tap?
// if (t.TapCount > 1) {
// this.clearAll();
// return;
// }
// Use the touch object (packed in an string, as the key)
string key = NSValue.ValueFromNonretainedObject(t).ToString();
// Create a line for the value
CGPoint loc = t.LocationInView(this);
Line newLine = new Line();
newLine.begin = loc;
newLine.end = loc;
// Put pair in dictionary
//newLine.setColor();
newLine.setColor(selectedColor);
newLine.lineWidth = 30.0f;
newLine.fastest = 0.0f;
linesInProcess.Add(key, newLine);
}
this.SetNeedsDisplay();
}
public override void TouchesMoved(NSSet touches, UIEvent evt)
{
if (evt.TouchesForView(this).Count == 2 && linesInProcess.Count < 1)
{
bool firstTouch = true;
Circle circle = null;
string key;
foreach (UITouch t in touches)
{
CGPoint loc = t.LocationInView(this);
if (firstTouch)
{
key = NSValue.ValueFromNonretainedObject(t).ToString();
// Find the circle for this touch
bool gotCircle = circlesInProcess.TryGetValue(key, out circle);
// Update the Circle center
if (gotCircle)
{
circle.center = loc;
}
firstTouch = false;
}
else
{
// Update the circle outside
if (circle != null)
{
circle.point2 = loc;
circle.setColor();
}
}
}
}
else
{
foreach (UITouch t in touches)
{
string key = NSValue.ValueFromNonretainedObject(t).ToString();
// Find the line for this touch
Line line;
bool gotLine = linesInProcess.TryGetValue(key, out line);
// Update the line
CGPoint loc = t.LocationInView(this);
if (gotLine)
{
line.end = loc;
line.setColor();
Console.WriteLine("beginx = {0}, beginy = {1}, endx = {2}, endy = {3}", line.begin.X, line.begin.Y, line.end.X, line.end.Y);
}
}
}
this.SetNeedsDisplay();
}
public void endTouches(NSSet touches, UIEvent evt)
{
if (linesInProcess.Count < 1)
{
bool firstTouch = true;
Circle circle = null;
string key = "";
// Remove ending touches from Dictionary
foreach (UITouch t in touches)
{
if (firstTouch)
{
key = NSValue.ValueFromNonretainedObject(t).ToString();
// Find the circle for this touch
circlesInProcess.TryGetValue(key, out circle);
firstTouch = false;
}
}
// If this is a double tap, "line" will be nil
// so make sure not to add it to the array
if (circle != null)
{
LineStore.addCompletedCircle(circle);
circlesInProcess.Remove(key);
}
}
else
{
// Remove ending touches from Dictionary
foreach (UITouch t in touches)
{
string key = NSValue.ValueFromNonretainedObject(t).ToString();
// Find the line for this touch
Line line = new Line();
linesInProcess.TryGetValue(key, out line);
// If this is a double tap, "line" will be nil
// so make sure not to add it to the array
if (line != null)
{
LineStore.addCompletedLine(line);
linesInProcess.Remove(key);
}
}
}
this.SetNeedsDisplay();
}
public override void TouchesMoved(NSSet touches, UIEvent evt)
{
foreach (UITouch t in touches)
{
string key = NSValue.ValueFromNonretainedObject(t).ToString();
// Find the line for this touch
Line line;
bool gotLine = linesInProcess.TryGetValue(key, out line);
// Update the line
CGPoint loc = t.LocationInView(this);
if (gotLine)
{
// but before we do, see how much distance has changed since last update
// and use to set the line width
// Using velocity from moverecognizer
// PointF drawVelocity = moveRecognizer.VelocityInView(this);
// drawVelocity.X = Math.Abs(drawVelocity.X);
// drawVelocity.Y = Math.Abs(drawVelocity.Y);
//
// float drawSpeed = (float)Math.Sqrt(Math.Pow(drawVelocity.X, 2) + Math.Pow(drawVelocity.Y, 2));
// if (drawSpeed > line.fastest) {
// line.fastest = (drawSpeed + line.fastest)/2;
// }
//
// line.lineWidth = Math.Min(1200/line.fastest, 30);
// Using the difference betseen the length of the line as an indicator of velocity - I like this better
float oldLength = (float)Math.Sqrt(Math.Pow(line.beginx - line.endx, 2) + Math.Pow(line.beginy - line.endy, 2));
float newLength = (float)Math.Sqrt(Math.Pow(line.beginx - loc.X, 2) + Math.Pow(line.beginy - loc.Y, 2));
if (Math.Abs(newLength - oldLength) > line.fastest)
{
line.fastest = (Math.Abs(newLength - oldLength) + line.fastest) / 2;
}
line.lineWidth = Math.Min(30 / line.fastest, 20);
// OK back to our regularly scheduled programming
line.end = loc;
//line.setColor(); // Set color based on the angle of the line
//Console.WriteLine("beginx = {0}, beginy = {1}, endx = {2}, endy = {3}", line.begin.X, line.begin.Y, line.end.X, line.end.Y);
}
}
this.SetNeedsDisplay();
}
public void endTouches(NSSet touches)
{
// Remove ending touches from Dictionary
foreach (UITouch t in touches)
{
string key = NSValue.ValueFromNonretainedObject(t).ToString();
// Find the line for this touch
Line line = new Line();
linesInProcess.TryGetValue(key, out line);
// If this is a double tap, "line" will be nil
// so make sure not to add it to the array
if (line != null)
{
LineStore.addCompletedLine(line);
linesInProcess.Remove(key);
}
}
this.SetNeedsDisplay();
}
