Patent ID: 6771259
Filing Date: 2004-08-03
Classification: A63F,G06T

Abstract:
An image generating apparatus for generating drawing data on the basis of a polygon drawing command and outputting the drawing data as image data, comprising:means for receiving the polygon drawing command, the polygon drawing command including polygon information for drawing a reference object representing a rough shape of an object to be drawn, and an initial value given to generate quasi minute drawing information of the object; quasi random number generating means for generating a reproducible random number value on the basis of the initial value; quasi minute drawing information generating means for dividing into plural fundamental polygons an object area or a partial area of the object which is represented by the polygon information for drawing the reference object in order to generate the quasi minute drawing information; and drawing means for generating drawing data to draw the object on the basis of the plural fundamental polygons; wherein said quasi random number generating means is initialized upon input of the initial value thereto, and uses the random number value thus generated as a random number seed to generate a next random number, thereby successively generating random number values and said quasi random number generating means has a stack for storing the random number seed, and a stack pointer for performing a write-in operation into said stack and a read-out operation from said stack.