This question already has answers here:
Draw part of a circle
(8 answers)
Closed 9 years ago.
I am developing an application in which I have to show a filled arc on my circle which will indicate the selected time.
I have attached an image for specifying what I exactly want to ask:-
Please help me in how to draw arc on circle.
Any suggestions will be highly appreciated.
you need something like this
Related
This question already has answers here:
How to change center of gravity in sprite kit game?
(2 answers)
Closed 7 years ago.
I am new in Swift Programming and I am using SpriteKit.
Is there anybody knows how to set the gravity of the world to the center of the screen which all my sprites will fall to the center of the screen?
Or is it possible to configure it? Any help? Thanks in advance.
You can use SKFieldNode for this purpose
Code example
// create grav field
let field = SKFieldNode.radialGravityField();
// center on X-axis
field.position.x = size.width/2;
// center on Y-axis
field.position.y = size.height/2;
// add to your world
addChild(field);
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
How to implement alpha gradient on a image?
I have 2 images below
With these 2 images I want to create following effect. Any technique you think to mask these images to create required effect.
You could use a gradient mask to create something like this, but you wouldn't get the gloss and shadows that you see in your final image:
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
UIImage color changing?
I have one image with Grey and white color.I want to change Grey color to white and change white color to Grey through code dynamically. Please help.
Better to look out for Open CV framework, because the thing which you are expecting in already available with this framework.
You can get the source from here
Sample Code : Convert RGB to Black & White in OpenCV
Convert image document to black and white with OpenCV
Hope that would give you some new idea about image processing. :)
This question already has an answer here:
How can i apply lens effect to my UIImage?
(1 answer)
Closed 9 years ago.
I am working on an application that has an image and I want a lens (circular shape) that I can move over the image and the area comes under the circular lens will zoom.
Please provide some idea. This functionality is implemented in the app named PimpleEraser in AppStore.
This is a great tutorial on exactly what you want, a sort of magnifying glass.
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
How to let a view rotate forever?
Hi everyone I would like to know if it is possible to move an image round in a circle with a timer. FOr example make it moves arround a circle with a timer that everytime it display a new position to the image. How can I do this please ? sorry for my english I'm french :/
make an anchorpoint for the image to rotate around? sorry you didnt provide alot of information....
This website covers exactly how anchor points work and how you can get an object to circle around that point http://www.qcmat.com/understanding-anchorpoint-in-cocos2d/