| 摘要 |
PURPOSE: To enable graphic data to be efficiently developed into a bit map. CONSTITUTION: The bit map data of an isosceles right-angled triangle are registered in a memory 21, and an address A is designated to read out the memory 21. A is represented by a formula, A=A0+[RA.i], wherein A0 and i are integers, and [] is an operator which converts an enclosed numerical value into an integer. RA is set in value, and i is increased starting from zero one by one, whereby the bit map data of a right-angled triangle multiplied along a readout direction nearly 1/RA times as much as an isosceles right-angled triangle are read out from the memory 21. Data of each i read out from the address A of the memory 21 are masked to obtain the bit map data of a similar right-angled triangle. The masked data of each i are shifted by S bits through a shift section 26 to obtain a general triangle deformed deviating in the direction of Y through a shift register. At this point, S= S0+[RS.i]. |
