27 Click down in the top left corner of the canvas and drag the mouse back and

27 click down in the top left corner of the canvas

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27. Click down in the top left corner of the canvas and drag the mouse back and forth to erase the seabed pixels. Be careful not to erase any of the turtle while doing this. You can hold the mouse down as long as you like and keep erasing in long, continuous sequences. However, it's safer to let go every few seconds and start a new erasing sequence. If you ever accidentally erase part of the turtle, you have to hit Ctrl+Z to undo the mistake and it undoes the entire sequence so that's why shorter sequences are encouraged. 28. Continue erasing all the seabed floor, going close to the turtle but not erasing any part of it.
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7 29. Once you have erased roughly all the unwanted portions of the image, change the eraser width down to 20 px and zoom in closer on the image using the Zoom tool in the Navigator panel to get closer to the turtle. Find any areas around the edge of the turtle that still have water and use this smaller eraser to refine it closer to the turtle. Note: the eraser size can be changed to any values you desire but note that it's usually easier to start with a thick eraser and then refine it later with a smaller eraser brush. 30. It doesn't have to be perfect but it should look something like this: 31. Add a new Pixel Layer and name it Blue Background. 32. Select the Flood Fill Tool. Click on the canvas to set the Blue Background layer to the water colour you picked earlier using the Color Picker Tool. 33. Now you will have to re-order the 2 layers with the Blue Background Layer below the Turtle layer so that the turtle is visible above the background. 34. The graphic should now look something like this: 35. Hit File > Save to complete this activity.
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8 Activity 2 Superimposing images 1. In Affinity, open the files people.jpg and giraffe.jpg . 2. Click in the people.jpg tab and hit File > Save As. Save this image as a .afphoto file with the name act_2 in your cs1033/lab03 folder. 3. Name the Background layer of act_2 as "People walking" 4. Repeat step 2 with the giraffe.jpg image and save this file (File >Save As) as an .afphoto file called giraffe_work . 5. Name this layer Giraffe 6. Crop the giraffe image to remove any excess boundaries around the outside of the giraffe. 7. Use the Flood Erase Tool (you will need to adjust the tolerance) and the Erase Brush Tool and the Zoom tool in the Navigator Panel to remove all the background around the giraffe so that you're left with just the giraffe itself. Use the tips given in Activity 1 to help with this task. 8. The result should look like this:
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9 9. Hit File > Save. 10. In the Menu Bar, click Select > Select All. 11. With the entire canvas selected, push Ctrl+C to copy it. NOTE: make sure the Giraffe layer is selected in the Layers panel or this won't copy properly. 12. Click into the act_2 tab. Push Ctrl+V to paste the copied giraffe image into this canvas.
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  • Fall '13
  • Computer file, Vector graphics, Scalable Vector Graphics, vector graphic, Options Bar, Ellipse Tool

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