About: Rotate an Image Along a Circular Path

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This code snippit demonstrates how to use Konfabulator's CustomAnimation object to rotate an image in a circular motion around a point. You can adjust the radius and speed to suit your needs. Note that the animation will run indefinitely if used exactly as shown. To stop the animation you must return a value of false from the updateCircularAnimation function at the time you want it to stop.

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rdfs:label	Rotate an Image Along a Circular Path
rdfs:comment	This code snippit demonstrates how to use Konfabulator's CustomAnimation object to rotate an image in a circular motion around a point. You can adjust the radius and speed to suit your needs. Note that the animation will run indefinitely if used exactly as shown. To stop the animation you must return a value of false from the updateCircularAnimation function at the time you want it to stop.
dcterms:subject	Code Resources Resources
abstract	This code snippit demonstrates how to use Konfabulator's CustomAnimation object to rotate an image in a circular motion around a point. You can adjust the radius and speed to suit your needs. Note that the animation will run indefinitely if used exactly as shown. To stop the animation you must return a value of false from the updateCircularAnimation function at the time you want it to stop. a = new CustomAnimation(25, updateCircularAnimation); a.currentFrame = 0; a.totalFrames = 50; // Change this value to adjust speed a.image = myImage; // Assign the image you want to rotate here a.hCenter = 100; // hOffset of the rotation center point a.vCenter = 100; // vOffset of the rotation center point a.radius = 50; // Radius of the circular motion path // Set the registration point of the image to its center so // that the image will be properly positioned myImage.hRegistrationPoint = (myImage.width / 2); myImage.vRegistrationPoint = (myImage.height / 2); function updateCircularAnimation() { intAngle = Math.floor((this.currentFrame / this.totalFrames) * 360); this.image.hOffset = this.hCenter + (this.radius * Math.cos(intAngle * Math.PI / 180)); this.image.vOffset = this.vCenter + (this.radius * Math.sin(intAngle * Math.PI / 180)); if (this.currentFrame < this.totalFrames) this.currentFrame++; else this.currentFrame = 0; return true; // Return false when you want the animation to stop }

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