Helo Ken.
Thanks for answer,
I meant, I have some title string already, and I wish to be able to
animate as if its being written at the moment, also I forgot to
mention that this is for iOS.
Once again thanks for the reply.
I will still check your code and see how maybe I can apply what I
need. Maybe, and for sure I need to get the points of the path to be
done first somehow and then animate the creating of the path.
i dunno.
G.
On Thu, Jun 23, 2011 at 12:34 PM, Ken Tozier <kentoz...@comcast.net> wrote:
> If you're "writing" with the mouse the following might help. It isn't done,
> still needs some sort of check in the drawRect method to know when you've
> drawn all the segments and you;ll need to adjust x/y values to the view
> you're drawing in, but it will get you started.
>
> - (void) mouseDown:(NSEvent *) inEvent
> {
> // allocate a mutable data to store event points and times
> dragPoints = [[NSMutableData alloc] init];
>
> // save fetch time and location of click and store in dragPoints
> NSTimeInterval timestamp = [inEvent timestamp];
> NSPoint clickPoint = [inEvent locationInWindow];
>
> [dragPoints appendBytes: ×tamp length: sizeof(NSTimeInterval)];
> [dragPoints appendBytes: &dragPoint length: sizeof(NSPoint)];
> }
>
> - (void) mouseDragged:(NSEvent *) inEvent
> {
> NSTimeInterval timestamp = [inEvent timestamp];
> NSPoint dragPoint = [inEvent locationInWindow];
>
> // write interval and point to dragPoints mutable data object
> [dragPoints appendBytes: ×tamp length: sizeof(NSTimeInterval)];
> [dragPoints appendBytes: &dragPoint length: sizeof(NSPoint)];
> }
>
> - (void) mouseUp:(NSEvent *) inEvent
> {
> // save the recording, either in memory or to a file
> [dragPoints writeToFile: @"/path/to/some/file.bin"];
>
> [dragPoints release];
> }
>
>
> // In your draw method, you could fetch a timestamp/NSPoint pair from the
> recording like so
>
> - (void) drawRect:(NSRect) inRect
> {
> CGContextRef context = [[NSGraphicsContext
> currentContext] graphicsPort];
>
> // some instance variable indicating where you are in the recording
> int frameOffset =
> currentIncrement * (sizeof(NSTimeInterval) + sizeof(NSPoint));
> NSTimeInterval time =
> *(NSTimeInterval*)[dragPoints bytes] + frameOffset;
> NSPoint point =
> *(NSPoint*)[dragPoints bytes] + frameOffset + sizeof(NSTimeInterval);
>
> // draw line
> CGContextAddLineToPoint(context, point.x, point.y);
>
> // create a new NSTimer with the delay from "time" variable
> [NSTimer scheduledTimerWithTimeInterval: time
> target: self
> selector: @selector(dearRect:)
> userInfo: nil
> repeats: NO];
>
> // increment placeholder
> currentIncrement++;
> }
>
> On Jun 23, 2011, at 5:21 AM, Gustavo Adolfo Pizano wrote:
>
>> Hello all.
>>
>> Im wondering if animating handwriting is somehow possible to do, I
>> have been looking but I find only how to do it in flash.
>>
>> Can somebody give me some headlights in the right direction so I can
>> start digging into?
>>
>> Thanks a lot.
>>
>> Gustavo
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