Drawing apparatus

A recording medium recording a control program of a drawing apparatus including a display having a display surface and a designator for designating an arbitrary point within said display surface, wherein said control program, when executed, causes a processor of said drawing apparatus to execute a method comprising:

• writing image data to a first memory;
• changing a resolution of the image data stored in said first memory into a descending direction, and writing low-resolution image data obtained through the change to a second memory;
• displaying an image on the basis of the low-resolution image data stored in said second memory on said display surface;
• performing drawing processing on the image data in said first memory according to a movement of a point designated by said designator on said display surface that displays the image on the basis of the low-resolution image data stored in the second memory;
• and
• repetitively activating said changing the resolution of the image data stored in said first memory and repetitively activating said drawing processing performed on the image data in said first memory,
• wherein a frequency at which said drawing processing on the image data in said first memory is repetitively activated is higher than a frequency at which said changing the resolution of the image data in said first memory is repetitively activated, and said repetitively activating alternatively activates said changing the resolution and said drawing processing.

A controlling method of a drawing apparatus including a display having a display surface and a designator for designating an arbitrary point within said display surface, comprising:

• writing image data to a first memory;
• changing a resolution of the image data stored in said first memory into a descending direction, and writing low-resolution image data obtained through the change to a second memory;
• displaying an image on the basis of the low-resolution image data stored in said second memory on said display surface;
• performing drawing processing on the image data in said first memory according to a movement of a point designated by said designator on said display surface that displays the image on the basis of the low-resolution image data stored in the second memory;
• and
• repetitively activating said changing the resolution of the image data stored in said first memory and repetitively activating said drawing processing performed on the image data in said first memory,
• wherein a frequency at which said drawing processing on the image data in said first memory is repetitively activated is higher than a frequency at which said changing the resolution of the image data in said first memory is repetitively activated, and said repetitively activating alternatively activates said changing the resolution and said drawing processing.