3d graphics apparatus using texture images with displacement inf

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G06F 1500

Patent

active

057456674

ABSTRACT:
A texture memory for storing color information of a surface of an object and displacement information of the object, wherein the information is prepared in advance; reading means for reading out the color information of the surface of the object and the displacement information of the object necessary for drawing the object from the texture memory in response to receiving a command instructing to draw the object stored in the texture memory according to a size and a position, if necessary, color information and displacement information specified by the command; size modifying means for expanding or reducing and/or modifying the read color information of the surface of the object and the read displacement information of the object by using the color information and the displacement information, and if specified, using the specified displacement information if specified so as to correspond to the size and the displacement specified in the command; color modifying means for modifying the color information processed by the size modifying means based on the specified color information if specified; and hidden surface processing means for performing a hidden surface removal for the drawing surface of the object by using the color information of the surface of the object and the displacement information of the object from the size modifying means or the color modifying means and by the position specified in the command. This enables a rapid measure to be taken against the case of drawing a great number of spheres, pipes or the like.

REFERENCES:
patent: 5586234 (1996-12-01), Sakuraba et al.
patent: 5630038 (1997-05-01), Itoh et al.
"Atoms with Transparency and Shadows", Nelson L. Max, 2435 Computer Vision, Graphics and Image Processing 27 (1984), Jul., No. 1, New York, pp. 46-63.
Visualization of Molecular Structures Under the Graphics API V2 Environment at IBM 6090 and RISC System/6000 Workstations, IBM Technical Disclosure Bulletin, vol. 33, No. 10A, Mar. 1991, pp. 92-93.

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