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 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 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();
}