Hey I am implementing indoor location using beacons. I am done with indoor map and locating user location using beacon.
I am stuck at point where user want to search a path from its current location to destination. Currently I managed to implement it by providing the points of the whole path but that is not gonna be efficient in case of large areas.
eg. User is in room A and he want to search path for room Z. Currently I am using saving coordinates of the whole path. But I am looking for better solution if any.
I am not using MapKit I am simply using scroll view and pdf import.
This is how I am displaying path.
Note: Path coordinates are stored in JSON file currently I put them manually.
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(394.0, 290.0)];
[path addLineToPoint:CGPointMake(100.0, 290.0)];
[path addLineToPoint:CGPointMake(50.0, 250.0)];
CAShapeLayer *pathLayer = [CAShapeLayer layer];
pathLayer.frame = self.view.bounds;
pathLayer.path = path.CGPath;
pathLayer.strokeColor = [[UIColor redColor] CGColor];
pathLayer.fillColor = nil;
pathLayer.lineWidth = 2.0f;
pathLayer.lineJoin = kCALineJoinBevel;
[self.view.layer addSublayer:pathLayer];
CABasicAnimation *pathAnimation = [CABasicAnimation animationWithKeyPath:#"strokeEnd"];
pathAnimation.duration = 2.0;
pathAnimation.fromValue = [NSNumber numberWithFloat:0.0f];
pathAnimation.toValue = [NSNumber numberWithFloat:1.0f];
[pathLayer addAnimation:pathAnimation forKey:#"strokeEnd"];
Thanks in advance.
Got it. I am using graphs now. Its pretty simple now. Ill share my code later as well.
Related
I want to RUN animation in Objective c
I am capturing user photo using AVCaptureSession, and showing the image over the UIImageView.
Once the image is shown, I have to RUN animation starting from Top of the head to end of chin.
There are total 13 points over the face.
2 at the Forehead,
2 at the bridge of Nose,
2 at the end of the eyes,
2 at the opening of each nose,
2 at the start and ending of lips,
2 at the cheeks,
1 at chin end
I want to RUN animation which will start from head and end at chin and draw lines from each of the points mentioned above.
Here is sample image like the way.
Is is possible in Objective c
If yes, please guide for the same.
Thanks in advance.
Create bezier paths with the points you want to animate like so:
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(0.0, 0.0)];
[path addLineToPoint:CGPointMake(200.0, 200.0)];
[path addLineToPoint:CGPointMake(200.0, 200.0)];
..... add all your points .....
create a shape layer with the path like this:
CAShapeLayer *bezier = [[CAShapeLayer alloc] init];
bezier.path = bezierPath.CGPath;
bezier.strokeColor = [UIColor blueColor].CGColor;
bezier.fillColor = [UIColor clearColor].CGColor;
bezier.lineWidth = 5.0;
bezier.strokeStart = 0.0;
bezier.strokeEnd = 1.0;
[self.view.layer addSublayer:bezier];
then animate the path like this:
CABasicAnimation *animateStrokeEnd = [CABasicAnimation animationWithKeyPath:#"strokeEnd"];
animateStrokeEnd.duration = 10.0;
animateStrokeEnd.fromValue = [NSNumber numberWithFloat:0.0f];
animateStrokeEnd.toValue = [NSNumber numberWithFloat:1.0f];
[bezier addAnimation:animateStrokeEnd forKey:#"strokeEndAnimation"];
this answer is taken mainly from here:
Drawing animation
I am using below code to draw a Pie slice layer with CAShapeLayer.
CGFloat endAngle = (M_PI*2/5)-M_PI_2;
CAShapeLayer *outerBorderCircle = [CAShapeLayer layer];
int outerradius = self.frame.size.width/2;
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(outerradius, outerradius)];
[path addLineToPoint:CGPointMake(outerradius, self.outerCircleBorder)];
[path addArcWithCenter:CGPointMake(outerradius,outerradius) radius:outerradius-self.outerCircleBorder startAngle:-M_PI_2 endAngle:endAngle clockwise:YES];
[path closePath];
outerBorderCircle.path = path.CGPath;
outerBorderCircle.fillColor = [UIColor whiteColor].CGColor;
outerBorderCircle.strokeColor = self.borderShadowColor.CGColor;
outerBorderCircle.lineWidth = self.outerCircleBorder;
outerBorderCircle.lineJoin = kCALineJoinRound;
outerBorderCircle.zPosition = MAXFLOAT;
CABasicAnimation *startanimation = [CABasicAnimation animationWithKeyPath:#"fillColor"];
startanimation.removedOnCompletion = YES;
startanimation.fromValue = (id)[[UIColor clearColor] CGColor];
startanimation.toValue = (id)[[UIColor whiteColor] CGColor];
startanimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
startanimation.duration = 10.0;
[startanimation setFillMode:kCAFillModeBoth];
[outerBorderCircle addAnimation:startanimation forKey:#"fillColor"];
[self.layer addSublayer:outerBorderCircle];
But animation part working as fade in fade out. But i need to animate arc kind of animation.
Please help me.
To animate the stroke you should animate those properties:
-strokeStart
-strokeEnd
From the documentation:
Combined with the strokeEnd property, this property defines the
subregion of the path to stroke. The value in this property indicates
the relative point along the path at which to begin stroking while the
strokeEnd property defines the end point. A value of 0.0 represents
the beginning of the path while a value of 1.0 represents the end of
the path. Values in between are interpreted linearly along the path
length.
[UPDATE]
CABasicAnimation *drawAnimation = [CABasicAnimation animationWithKeyPath:#"strokeEnd"];
drawAnimation.duration = timeInSeconds;
drawAnimation.fromValue = [NSNumber numberWithFloat:startAngle];
drawAnimation.toValue = [NSNumber numberWithFloat:endAngle];
drawAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
[circle addAnimation:drawAnimation forKey:#"drawCircleAnimation"];
Credits to Rob Mayoff
with Xcode for iOS, I have animated a drawn line.
I wish to delete it (or fade away) almost immediately.
I have tried to repeat the code with the colour set to clear (red for the tests) as my background is a grid pattern. But I only get the last colour line drawn.
Any ideas on drawing the lines in sequence one after each other?
{
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(0.0,100.0)];
[path addLineToPoint:CGPointMake(150.0, 100.0)];
[path addLineToPoint:CGPointMake(155.0, 50.0)];
[path addLineToPoint:CGPointMake(160.0, 150.0)];
[path addLineToPoint:CGPointMake(165.0, 100.0)];
[path addLineToPoint:CGPointMake(350.0, 100.0)];
CAShapeLayer *pathLayer = [CAShapeLayer layer];
pathLayer.frame = self.view.bounds;
pathLayer.path = path.CGPath;
pathLayer.strokeColor = [[UIColor greenColor] CGColor];
pathLayer.fillColor = nil;
pathLayer.lineWidth = 2.0f;
pathLayer.lineJoin = kCALineJoinBevel;
[self.view.layer addSublayer:pathLayer];
CABasicAnimation *pathAnimation = [CABasicAnimation animationWithKeyPath:#"strokeEnd"];
pathAnimation.duration = 1.0;
pathAnimation.fromValue = [NSNumber numberWithFloat:0.0f];
pathAnimation.toValue = [NSNumber numberWithFloat:1.0f];
[pathLayer addAnimation:pathAnimation forKey:#"strokeEnd"];
}
Thanks
Add:
pathAnimation.autoreverses = true;
pathAnimation.removedOnCompletion = false;
pathAnimation.fillMode = kCAFillModeForwards;
You'll also probably want to use the animation delegate functions to remove the layer on completion.
Alternatively, if you want a delay (even slight) before the animation reverses, or want to fade it out in a different manner than reversing the animation, you can use a CAAnimationGroup to execute a series of animations on the same timeline.
Thanks for all the help.
I managed to find and successfully use code from the "Core Animation" Apple documentation. This is the first time I've managed that. Sorry for being slow, learning all the time. I had to replace "titleLayer" with "pathLayer". I'm sure that would have helped some of the suggestions.
Thanks again.
Here's my working code. Added after the code I posted above, before the last curly bracket.
CABasicAnimation* fadeAnim = [CABasicAnimation animationWithKeyPath:#"opacity"];
fadeAnim.fromValue = [NSNumber numberWithFloat:1.0];
fadeAnim.toValue = [NSNumber numberWithFloat:0.0];
fadeAnim.duration = 1.5;
[pathLayer addAnimation:fadeAnim forKey:#"opacity"];
// Change the actual data value in the layer to the final value.
pathLayer.opacity = 0.0;
there are a lot of examples how to animate along a UIBezierPath. But i can't figure it out, how to animate only the appendPath of an UIBezierPath.
In my case i have the following example:
// Create path from view controller
UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:
CGRectMake(0, 0, tutorialController.bounds.size.width,
tutorialController.bounds.size.height) cornerRadius:0];
// Create circle path
UIBezierPath *circlePath = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(x, y, 2.0*radius, 2.0*radius) cornerRadius:radius];
[path appendPath:circlePath];
[path setUsesEvenOddFillRule:YES];
// Create spot layer
spotLayer = [CAShapeLayer layer];
spotLayer.path = path.CGPath;
spotLayer.fillRule = kCAFillRuleEvenOdd;
spotLayer.fillColor = [UIColor blackColor].CGColor;
spotLayer.opacity = 0.90;
So basically its a circle inside a rect and i now want to animate only the circle. In all attempts the rect was also moved.
Here is my example, how i can animate "along" a path
CGPoint pathStart = CGPointMake(96.000000, 226.000000);
CGPoint pathEnd = CGPointMake(120.000000, 300.000000);
[circlePath moveToPoint:pathStart];
[circlePath addLineToPoint:pathEnd];
CAKeyframeAnimation *anim = [CAKeyframeAnimation animationWithKeyPath:#"position"];
anim.path = circlePath.CGPath;
anim.duration = 5.0;
anim.calculationMode = kCAAnimationPaced;
[spotLayer addAnimation:anim forKey:#"bezierPathAnim"];
But that is not what i want...
What i want to do is, to move my circle path (which is an appended path of a rectangle path) via animation
Does anybody has some ideas?
Regards
I solved my Problem :-)
Here is the solution...
// If there is an old path animate to the new path
if(oldPath != nil){
CABasicAnimation *anim = [CABasicAnimation animationWithKeyPath:#"path"];
[anim setFromValue:(__bridge id)oldPath];
[anim setToValue:(__bridge id)[path CGPath]];
[anim setDuration:0.3];
[anim setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
[spotLayer addAnimation:anim forKey:#"path"];
}
First of all i kept the oldPath (starting point) and then animate to the new setted path.
I need to drag UIView along bezier path from one point to another, What is the best way?
This is the easiest way to do drag a uiview from one point to another point.
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:startingPoint];
[path addLineToPoint:endPoint]; //you can use addCurveToPoint: , addArcToPoint:, etc
CAKeyframeAnimation *pathAnimation = [CAKeyframeAnimation animationWithKeyPath:#"position"];
pathAnimation.duration = 10.0;
pathAnimation.path = path;
pathAnimation.removeOnCompletion = NO ;
[myView.layer addAnimation:pathAnimation forKey:#"pathAnimation"];