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Bây giờ đi với tấm sàn nguyên liệu và nhấp vào tab Model Trong Chọn hình thu nhỏ tương ứng với cây 2D. Kích chuột phải vào và chọn Texture xuất khẩu Hình ảnh và lưu nó trong cùng một vị trí như cảnh Kerkythea của bạn. Bây giờ xuất cảnh của bạn để Kerkythea như bình thường. Kerkythea, | Photo-Realistic Rendering 12. Select the second icon Add Bitmap . 13. Select Browse and find the image you saved from SketchUp. 14. Click on the thumbnail in texture editor again. 15. Then under Bitmap Options tick Alpha Channel. This option will only appear when you click the thumbnail . 16. The large thumbnail bottom left will now have changed to a black and white image showing the alpha channel clip map . 17. Click Apply Changes. 18. Re-render. 19. You should now have fixed the problem as you can see here 268 Chapter 8 What just happened 2D trees and people are often created as PNG files with transparency. The transparency information is saved in the form of a channel called the Alpha channel. Normal images have just three channels red green and blue. This is just an extra one. All you ve done here is to tell Kerkythea where to find that Alpha channel and that you want it to be used to clip the image. If you want to you can create clip maps manually in GIMP for your materials. For example to create holes in a fence. Have a go hero Have a go at making a clip map. To do this just make a copy of the texture image and open it in GIMP. Then create a new black layer and paint white on it wherever you want a hole to be. Hide the original layer and save it as an image. Then just load the black and white image into the Clip Map slot in Kerkythea. Creating bump map materials Some materials need a bumpy surface to render accurately. You can do this with wood grain leather upholstery and even water. It s the same principle as clip maps but this time the black and white image refers to how far the surface is raised. Try these steps to see it in action. Time for action 1. In SketchUp draw a cube and apply a tile material to each face. 2. Set up shadows and rotate the view so that the shadows are facing towards you. 3. Go to View Animation Add Scene. 4. Export to Kerkythea. 5. In Kerkythea go to Insert Omnilight. This places an omni-directional light at the location of the .
