![]() > basic.png +matte -compose CopyOpacity -composite We next add some color and text, which gives us a 2D logo.Ĭonvert basic.png -fill blue -draw 'color 0,0 reset' I’ll explain the -gaussian switch in a moment. The +matte switch tells IM to ignore the matte channel of the image, which is used to determine the transparency of pixels. Here we have a rectangle overlapping two circles to form a capsule-like shape:Ĭonvert -size 200x120 xc:black -fill white -draw 'circle 65,60 28,60' The first step is to make a shape for your logo. ImageMagick can even add shadows and lights to make your logo 3D. Make any shape, add some colors, write a word or two, and you have a logo. Now that you know some of the building blocks, designing logos is easy. To draw an ellipse centered at a given point ( 45,18):Ĭonvert -size 120圆0 xc:magenta -fill white -stroke black -draw "ellipse 60,30 45,18 0,360" ellipse.pngĪ polygon requires at least three coordinates to define its boundaries:Ĭonvert -size 100圆0 xc:skyblue -fill white -stroke black > -stroke black -draw "roundrectangle 25,10 95,50 20,12" rrect.gifĪn arc requires start and end points and the degrees of rotation ( 65,250):Ĭonvert -size 120圆0 xc:blue -fill white -stroke black -draw "arc 90,4 40,50 65,250" arc_partial.png In this case, along with the upper left and the lower right coordinates you need to mention the width ( 20) and the height of the corners ( 12). You can also create a round-rectangle with curved edges. > -stroke black -draw "rectangle 25,10 95,50" rect.gif ![]() To create a rectangle, you need to specify the upper-left and the lower right coordinates:Ĭonvert -size 120圆0 xc:wheat -fill white Use the -fill switch to assign the color to be filled inside the shapes and the -stroke switch to define the boundary color. IM lets you draw shapes such as a rectangle, circle, ellipse, and polygon from the command line using convert with the -draw switch. You can find more tricks on creating multi-image mosaics on the Web. The color of the canvas in this case is supplied by the -background switch. To overcome this problem, use the -mosaic switch, which automatically creates a canvas large enough to hold all the images. If an image exceeds the canvas dimensions it is cropped. Since IM reads in all the input images before opening the output image, it can work on the same input image again and again without creating new images. $ composite -geometry +12+28 3.gif multiple.png multiple.png $ composite -geometry +19+20 2.gif multiple.png multiple.png $ composite -geometry +15+30 1.gif multiple.png multiple.png Next, we place various images on the canvas, specifying the horizontal and vertical coordinates with the -geometry switch. ![]() $ convert -size 200x200 xc:wheat multiple.png Instead of the -gravity switch with its rigid positions, we use the -geometry switch to specify locations on the image.įirst we create a canvas to work on and colour it with the xc switch: We can create a mosaic by superimposing many images onto a surface at various positions. The -gravity switch offers some more positions that can be used to place images. $ composite -gravity SouthWest curve_sw.png curved-nw.png curved-sw-final.png $ composite -gravity NorthWest curve_nw.png curved-ne.png curved-nw.png $ composite -gravity NorthEast curve_ne.png curved-se.png curved-ne.png To curve the rest of the corners of the image: We can then use the resulting image as the source image for the next command, to apply the next corner, and so on. This command superimposes the curved southeast corner onto the southeast corner of the original image. $ composite -gravity SouthEast curve_se.png image.png curved-se.png To place them at the appropriate position we use the composite command with the -gravity switch specifying the position: Using this technique we can turn the hard-corners of an image into rounded borders - or any other shape, for that matter - by simply superimposing pre-fabricated transparent curved corners onto the image. Pasting one image over another is known as superimposing. In this article we’ll use the ImageMagick suite of commands to create a multi-image mosaic, draw some basic shapes, and create 3D logos. In a previous article we used it to add text and frames to images, and for other basic image manipulation. ImageMagick (IM) is a command-line graphics creation and editing application.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |