Get the most recent version from the author's github: or, if you don't have git, you can also load a zipped snapshot from. Software Disclaimer.If you use the VampyreImaging library you can load that particular png image. To save in BMP the BMPWork can be saved directly. In ButtonSaveClick() to save as JPEG file format (officially called JFIF) the BMPWork is assigned to JPEG object and then method SaveToFile() is called. change CatNapOnShelf.jpg to CatNapOnShelf.png to save as PNG file. In method ButtonSaveClick() the extension of file name is used to determine what image format the BMPWork bitmap should be saved in. To display bitmap result the BMPWork is assigned to Image1 component. Other flip and turn operations work by similar method. In ButtonFlipHorizClick() a loop in a loop goes through the whole bitmap pixel by pixel to move the source image in BMPBackup to their new destination in BMPWork bitmap. To draw graphics see the example of ButtonCirclesClick(), here circles are drawn on the BMPWork.Canvas with method ellipse(), using same value for both radiuses. The pixels are each a TColor consisting of Red, green and blue byte values. The bitmap has a property canvas that is an array of pixels. These functions will first store a copy of BMPWork in BMPBackup object. Manipulation of image is done in methods (functions) like ButtonFlipHorizClick(), ButtonCirclesClick() etc. Image1 object is the visual component used to display bitmap of BMPWork.

After loading image is moved to BMPWork object.īMPBackup object is used to store previous step of BMPWork image to allow undo of lastest step. PNG object used for load / save of PNG files. After loading image is moved to BMPWork object. JPEG object used for load / save of JPEG files. In the example app several memory (no visual) objects are used for theīMPWork object for load / save of BMP image files and for all graphics and pixels edit. Image it must be moved to a TBitmap object. To work with the graphics and pixels of the

TImage object it is NOT possible to edit the image, draw graphics andĬhange pixels. How to display, add graphics and manipulate JPEG, PNG and BMP images by pixels.Ī TImage object (an object of a TImage class) can be used toĭisplay an image file like a JPEG or PNG file.

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