You’ll have to use Timer to create rotation of the Image. There is no built in method exists for rotation. Create a global timer: Timer rotationTimer; Initialize timer in the constructor of the form and create PictureBox MouseEnter and MouseLeave events: //initializing timer rotationTimer = new Timer(); rotationTimer.Interval = 150; //you can change it to … Read more
//create rect UIImageView *myImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@”my_image.png”]]; //set point of rotation myImageView.center = CGPointMake(100.0, 100.0); //rotate rect myImageView.transform = CGAffineTransformMakeRotation(M_PI_2); //rotation in radians
//define image path $filename=”image.jpg”; // Load the image $source = imagecreatefromjpeg($filename); // Rotate $rotate = imagerotate($source, $degrees, 0); //and save it on your server… imagejpeg($rotate, “myNEWimage.jpg”); Take a look at: imagerotate() And: file_put_contents()
As always, the Internet to the rescue. So, this is some code which I hobbled together from other resources/post/blogs which will return a new image which is sized so it will contain the rotated image public BufferedImage rotateImageByDegrees(BufferedImage img, double angle) { double rads = Math.toRadians(angle); double sin = Math.abs(Math.sin(rads)), cos = Math.abs(Math.cos(rads)); int w … Read more
Since you’re using ARGB_8888 format every pixel is an uint32_t not uint16_t. Try changing your rotated Bitmap creation to use uint32_t for source and destination arrays and it should work better.
Instead of rotating the component itself, consider rotating the content of a component. This example draws a rotated image in a JPanel. Addendum: In the example RotatableImage.getImage() creates a BufferedImage directly in memory, but you can use ImageIO.read() to obtain an image from elsewhere. BufferedImage#createGraphics() is supported if you want to modify the image, but … Read more
Okay, this is a little slight of hand. The example code will only work for 90 degree increments (it was only designed this way), to do smaller increments you to use some trig to calculate the image width and height (there’s a answer somewhere for that to ;)) public class ImagePane extends JPanel { private … Read more
Using the Graphics2D rotation method is indeed the easiest way. Here’s a simple implementation: int centerX = width / 2; int centerY = height / 2; double angle = Math.atan2(centerY – mouseY, centerX – mouseX) – Math.PI / 2; ((Graphics2D)g).rotate(angle, centerX, centerY); g.fillRect(…); // draw your rectangle If you want to remove the rotation when … Read more
Starting with iOS 4.0 when the camera takes a photo it does not rotate it before saving, it simply sets a rotation flag in the EXIF data of the JPEG.If you save a UIImage as a JPEG, it will set the rotation flag.PNGs do not support a rotation flag, so if you save a UIImage … Read more
I hope the following sequence of code will help you: Bitmap targetBitmap = Bitmap.createBitmap(targetWidth, targetHeight, config); Canvas canvas = new Canvas(targetBitmap); Matrix matrix = new Matrix(); matrix.setRotate(mRotation,source.getWidth()/2,source.getHeight()/2); canvas.drawBitmap(source, matrix, new Paint()); If you check the following method from ~frameworks\base\graphics\java\android\graphics\Bitmap.java public static Bitmap createBitmap(Bitmap source, int x, int y, int width, int height, Matrix m, boolean … Read more