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Hi, I'm trying to write some code that will draw a filled in black circle at the coordinates where the mouse is clicked. Here is what I have written so far, I can currently get the coordinates of the mouse click point but nothing is displayed. I also get an …

Hi, I am trying to convert an image into grey scale. I can do this using a buffered image however the image type I have is Image. As you can see in the code below I try to cast the Image to a BufferedImage, apply the greyscale then cast is …

[CODE]double s = 1/(noOfPhases + 1);[/CODE] When I print the s the value I get is zero however when i print noOfPhases the value is 3. If i do the following [CODE]double s = (noOfPhases + 1);[/CODE] the value returned is 4. Why can I not not do 1 divided …

I have a class which displays the pixel information of an image. Right now the class takes a buffered image in its constructor but I would like the class to allow an image to be passed from another class. How can I do this because right now if the class …

I am writing some code which already gets the pixel array from an image, I then alter the pixel values. How do I now display this new pixel array as an image? I hope someone can help. Thank you

Hi I found a class ReadingPixels someone wrote on the net which given an image it dispays the x,y,r,g,b values as the mouse is over the image. I have a separate class I want to add the panel to. I can add the panel to my frame however I think …

Hi, I have written some code which when a mouse is clicked, a red circle is drawn at that position. The x,y coordinates are stored in an ArrayList. What I now want to do is enable the circles to be selected and then dragged. When the mouse is released the …

I have written a program which allows the user to click on the screen which draws a circle and when the user clicks on the circle again they can drag it around. My code allows the circle to be dragged it still displays the original cirlce and draws the path …

I am implementing an FFT class. I get the pixel data from an image then pass this to the FFT class. Once I apply the fast fourier transform to the array the result is an array of complex numbers. At the moment I convert the array of complex number to …

I have written two classes, one the GrabPixels class which takes an image and extracts the pixels from it. The FFT class then tries to call grabPixel. The problem I get is that img in this line [CODE]grabPix = new GrabPixels(img);[/CODE] is null. I'm not too sure why. Could someone …

Hi, I have written two classes. One is a pixel grabbing class the other allows the user to open and display an image. What I now want to be able to do is use the image which the use opened in the RunProgram class and grab pixels from it using …

Hi, I am trying to write some code to insert coordinates which are taken from the mouseClick position and then added to a 2D array. The user should click 6 positions on a panel and these positions should be stored in a 2D array. I hope you can help. Thank …

Hi, I am trying to write some code which uses a JSlider to specify the number of lables to be displayed on a frame. I know how to create the JSlider and display it, but I am not sure how to implement different numbers of lables. I hope someone can …

Hi I am trying to implement the Fast Fourier Transform. I have some code which I got online and slightly modified. I have a class GrabPixels which extracts a pixel array from an image, the class FFT implements the transform. My problem is I don't think the methods in the …