3D is the abbreviation of 3 d, which means three-dimensional graphics. Displaying 3d graphics in a computer means displaying 3D graphics in a plane. Different from the real world, the real three-dimensional space has a real distance space. The computer just looks like the real world, so the 3d graphics displayed on the computer are just like the real world. One of the characteristics of the human eye is that when the distance is combined, it will form a three-dimensional sense. The computer screen is flat and two-dimensional. The reason why we can enjoy the real three-dimensional image is that the difference in color and gray level when displaying on the computer screen makes the human eye have a visual illusion and perceive the two-dimensional computer screen as a three-dimensional image. Based on the knowledge of chromatics, the protruding part of the edge of a three-dimensional object generally presents a high-brightness color, while the concave part presents a dark color because it is blocked by light. This understanding is widely used to draw buttons and 3d lines in web pages or other applications. For example, the 3d text to be drawn, that is, the high-brightness color is displayed in the original position, and the outline is outlined in the lower left or upper right position with low-brightness color, which will visually produce the effect of 3d text. In the concrete implementation, two 2d characters with different colors can be drawn in different positions with exactly the same font. As long as the coordinates of two characters are appropriate, 3d characters with different effects can be produced visually.

ㄗarasi'te

2008-06- 19

15:46

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