3D Game Programming All in One- P16

3D Game Programming All in One- P16: During the past several years while working on the Tubettiland “Online Campaign” softwareand more recently while working on the Tubettiworld game, I figure I’ve receivedmore than a hundred queries from people of all ages about how to get started makinggames. There were queries from 40-year-olds and 13-year-olds and every age in between.Most e-mails were from guys I would estimate to be in their late teens or early 20s.
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3D Game Programming All in One- P16 Sources 357Then choose Image, Rotate, Free Rotate to get the FreeRotate dialog box (see Figure 11.9).Click the Right button in the Direction frame, and click theFree button in the Degrees frame. Finally, type 1.00 in the textbox next to the Free button, and click OK. This will rotate theselected area 1 full degree to the right (see Figure 11.10).You should have your rotated area with the selection mar- Figure 11.8 Rectangular Selection tool icon.quee still surrounding it. Dont touch anything yet—leavethe selection as it is.Now after having explained the Croptool, Ill show you another way tocrop the image that is sometimesmore convenient than using theCrop tool. With the rotated area still Figure 11.9 The Free Rotate dialog box.selected, choose Image, Crop toSelection and the image will be cropped for you!You will then end up with an image as shown inFigure 11.11 suitable for use as a texture.Now compare Figure 11.11 with Figure 11.7and you will see the difference.Original ArtworkThe other approach to creating textures is touse original artwork. Some people believe thisis not a real option for them, because theythink they cant draw or paint to save their Figure 11.10 The rotated woodgrain.lives. I tend to feel that everyone can learn thetechniques required. My intent here, however,is not to teach you how to draw, so if you wantto learn more, I encourage you to look into tak-ing some lessons.If you are satisfied with your artistic skills, then Figure 11.11 The cropped woodgrain image.you have another rich avenue for texture gen-eration available to you. The techniques used to convert a photograph to a texture can alsobe used to convert your hand-made images to textures.Another approach for creating original artwork is to create your images directly in a toollike Paint Shop Pro. You can draw freehand using the mouse or a pen tablet. Team LRN358 Chapter 11 ■ Structural Material Textures With tools like Paint Shop Pro you have a wide variety of means for creating textures, including a specific Texture Effects tool in the Effects menu, as shown in Chapter 8. Figure 11.12 shows examples of textures created using the built-in features of Paint Shop Pro. I encourage you to explore this tool in depth. It can really be a timesaver. And you can use it to create some knockout textures. Scaling Issues When creating your textures, you will need to pay attention to the issue of scale. The sizes of the things within an image that is used to make a texture have a particular relationship to other real-world objects. We are subconsciously aware of many of these relation- ships from our exposure to the world in general and will notice when the textures are out of proportion to the items they adorn. If its bad enough the effect can sometimes be similar to the sound of fingernails being Figure 11.12 Example textures. dragged across a chalkboard! Figure 11.13 shows two stylized houses. The bricks in house A are far too large, while the bricks in house B are more appropriately sized, yet may still be a bit too large. Yes, there are some uses for stone blocks having proportions such as those in house A, but they are rarely used in bungalow-sized or two-story Figure 11.13 Scaling bricks. homes, as depicted in the figure. The scale issue can pop up anywhere, as you can see in Figure 11.14. The texture image in the corrugated metal bridge surface is probably about 10 times larger than is appropri ...