Halftone pattern png full#
Then I changed the pattern style to "GREEDY PATH"Ĭhanged the "SIZE CUTOFF" to 5.0 to see the full path. That brings it down to 2,324 points total. Reduced "SIZE CUTOFF" to 0.74, hiding the background points.Ĭlicked on "REMOVE HIDDEN POINTS", since I don't want those hidden points in my path. Increased "LINE WIDTH" to 2.0 to give a nice black in the shadows.Ĭhanged the point style to "CIRCLES (LESS DENSE)", to vary the packing a bit. Increased "DETAIL LEVEL" to 150, so now there are 3,225 circles. In this example, I'll increase the level of detail, increase the line width, hide and remove background points, and show a couple of the patterns. "LINE WIDTH": Changes the relative width of the drawn line or dots.The large points are only hidden, not removed. "SIZE CUTOFF": Changes which points or line segments are drawn."USE DOTS/CIRCLES?": Switches between rendering with dots or circles.They will return if you change the point style or pattern style. "REMOVE HIDDEN POINTS": Delete the hidden points."KEEP OPTIMIZING": It tries to optimize the path continuously.It tries to reduce the pen travel when there are disconnected shapes, or reduce the drawn length if there is one long line. "OPTIMIZE": Run the optimization once.Initially, the path is probably longer than necessary, and could use some re-arranging via optimization. "SHOW PEN PATH": Show how the pen would travel in the air, in orange.It starts with a value of 50, which means that 50 small circles can fit across the image.īelow the buttons, it displays the total number of circles that were packed onto this image. "DETAIL LEVEL": High values mean MANY circles."MAX RADIUS": Width of the largest circles, relative to the smallest.You can use the mouse wheel to go up/down, or click and drag. "PATTERN STYLE": A drop-down menu to choose how those points are turned into a pattern."POINT STYLE": A drop-down menu to choose how the points are arranged."BLACK/WHITE INK": Switches between black ink on a white background, or white ink on a black background."SAVE IMAGE": It saves a PNG of the current view.The names of the saved files are based on the current time and date, so you shouldn't have to worry above over-writing your previous results. It also saves a PNG with the same base filename. "SAVE SVG": Saves an SVG file of the current pattern.When it saves line segments, they are (x1, y1, x2, y2). When it saves a sequence of dots or circles, each row is (x-position, y-position, radius). This may be useful if you want to use the points in some other code. "SAVE TXT": Saves the current pattern to a text file as tab-separated numbers, in the path order."LOAD IMAGE": Pick a new image from your computer, It works with BMP, GIF, PNG, JPG, JPEG, TIF, TIFF files.The right column changes the appearance of the pattern. The third column deals with optimizing the path, which can greatly reduce the pen's travel time. The second column changes the properties of the points or pattern, and will re-calculate the result if they are changed. In the left column, you can load a new image and save the output as text, SVG, or JPG. The bottom portion is the control panel, with four columns. When it starts, it automatically loads the rhino.jpg image, calculates a quick circle packing, and draws the circles on a white background. The top portion of the program shows the current result. Can choose to omit the largest circles or line segments.Save the circles or pattern as JPG, SVG, and TXT files.Optimize the drawing order, to reduce pen travel time.Optimize the pattern to reduce its length.Show dots, circles, tilted lines, scan back-and-forth, connect the points with a Hilbert curve, make a greedy path between points, a greedy loop, a minimum spanning tree, a Voronoi diagram, a Delaunay triangulation, or connect the 3 nearest points.Choose what pattern to make from the circles:.Circle packing, quadtree, random dither, 1D and 2D error diffusion on square or hex grids.This arranges points on an image for halftoning, using the circles themselves, dots at their centers, or lines connecting the circles.