setpixel

Hi I want to create function to draw circle put using this : nx = x + r *Math.Sin(th * 22 / 7 / 180); ny = y + r2 *Math.Cos(th * 22 / 7 / 180); and draw them in picture box using SetPixel method.

This is my GetPixel/SetPixel code for increasing the reds and purples in an image privatevoid redsAndPurplesToolStripMenuItem_Click(object sender, EventArgs e) {// Get bitmap from picturebox Bitmap bmpMain = (Bitmap)pictureBoxMain.Image.Clone(); // search through each pixel via x, y...