Blender 3D: Noob to Pro - UBI

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Blender 3D: Noob to Pro/Printable Version - Wikibooks, collection of open-content textbooks 10/24/2007 02:26 PM 15. You can make a test render now to see that the dents look the right size and the bevel is right. So, turn the subdivision level for the rendering up to 3. To help position the camera so that you centre the die, you can make the camera look at the die by adding a track-to constraint to it. I prefer to track an empty though, because it is more flexible. Make an empty by going into top down view (NUM7) and hitting SPACE ! add ! empty. It's always best to go into one of the set orthographic views so as to align new objects to the axes. If you add something misaligned, just go to the object menu then clear/apply > clear rotation (or ALT+RKEY). Because the empty was created at the origin, you might not be able to see it as it is inside the die. Hit ZKEY to enable wireframe mode and select the empty. Just move it outside the cube until we get the constraint set up. To add a track-to constraint, select the camera first then SHIFT+RMB the empty and press CTRL+TKEY and choose "TrackTo Constraint" from the list. Move the empty back inside the die. You can edit constraints in the object tab (F7). Add a couple of lamps (both intensity 1) to get the scene like this or feel free to experiment with a more advanced lighting setup: 16. To render, set the size of the image you want. 800x600 is a decent size so put these settings in the format panel in the Scene tab (F10). In the render panel, make sure 100% is selected. If it's 50%, the render will come out as 400x300. For preview renders, don't turn on OSA, which is anti-aliasing because it slows your renders down significantly. Try to only use it for a final render. Another way to position the camera is by selecting it and then looking through it as you move it. Look through the camera by pressing NUM0. Use the GKEY to pan across and rotate around the local axes of the camera by pressing say RKEY,XKEY,XKEY to rotate in x axis. To zoom in and out press GKEY, ZKEY, ZKEY and then move your mouse forwards or backwards. The mouse wheel zoom moves your view towards and away from the camera, without actually moving the position of the camera. Another important point is to set the image format. This is done in the format panel. The listbox has a number of image types. I find that png is generally the best because it is lossless and offers the highest compression among the lossless formats. It also supports an alpha channel for transparency. When rendering an animation, it is better to render as an image sequence than as a movie because it is easier to edit these and repair broken frames. Quicktime supports loading of image sequences and you can save as a movie using a wide range of compression formats. To save the render, go to the file menu ! save image and type in the full name of the image including the extension e.g. die.png. The output should now be looking something like this: 17. To give it some colour, we will need to use multiple materials because a typical die has dents that are a different colour from the die itself. Go to the editing section (F9) in the button panel again and make sure the die is selected. In the links and materials panel, there is a section for materials and the number in the box should be at zero. It may be at 1 if you have assigned a material to the object already. Add enough to make 2 materials in total. Go back to the Shading panel (F5) and there is a box at the very top of the material panel with the number 2 beside it. Click this number to make the two materials you've just created independent. Use the arrows to the right of the ME button to switch materials. Make material 1 bright red by just picking red in the colour picker or by setting the RGB sliders. Make material 2 white by doing the same. Or pick whatever colour you prefer and material settings. 18. These colours need to be assigned to the right parts of the die. Go into editmode and turn off subsurf to help. Select the inner faces of the dents - if you accidentally don't press the SHIFT, press CTRL+ZKEY or UKEY to undo. Once they are all selected, go to the Editing tab again and the material panel. Select the colour for the dents. There is a button that says assign - press it and it will make the dents white but the die remains red. Turn subsurf back on and render with OSA (only put it up as high as you need for the resolution of the image you are rendering): Extra: The reason I modelled the die this way is because it is also very easy to change the sizes of the components e.g. the bevel and the dent size. You do this by selecting the vertical or file:///Users/fsilva/Documents/fs_gab/UBI/Ensino/Util_Documents/Blender3D_NoobtoPro_Printable_Version.html Page 36 of 122
Blender 3D: Noob to Pro/Printable Version - Wikibooks, collection of open-content textbooks 10/24/2007 02:26 PM horizontal segments and just scaling them in one axis. Here we will reduce the dent size and the bevel by half. Go into front view (NUM1), turn off clipping and select a line containing dents. Then just scale in one axis e.g. SKEY, XKEY, 0.5. Remember to have your pivot point set to median: Do this horizontally and vertically around the die. You should need to scale 9 times for the dents and 6 times for the bevel: You may need to add extra geometry once you are satisfied with the sizes of the dots and the bevel so that the edges of the die don't look warped due to the subdivision. You can use face loop cut again for that and add extra lines in the middle of the gap segments. Next Page: Edit Mode HotKeys Review Previous Page: Modeling a Gingerbread Man
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