Figure drawing apparatus, figure drawing method and recording medium on which figure drawing programs are recorded

Patent metadata

Field	Value
Publication number	US-9329775-B2
Application number	US-201414281578-A
Country	US
Kind code	B2
Filing date	May 19, 2014
Priority date	Sep 20, 2012
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

When a user touches positions on a touch panel display unit which correspond to a plurality of characteristic points of a user's desired figure, the user moves the touched positions in accordance with a shape of the figure and leaves his or her touches from the touched positions and touches an additional touch position, characteristic conditions of different figures (a circle, parallel lines, an equilateral triangle, a triangle, a square, a rectangle, a quadrangle, a straight line, a concentric circle, an ellipse, etc.) are determined in accordance with the touched positions, a locus of the movement of the touched positions and the additional touch position and a type of the figure and a drawing-position thereof are determined.

First claim

What is claimed is:

1. A figure drawing apparatus comprising:
a touch panel;
a display unit;
a touch position detection unit which detects (i) a single touch position, (ii) a plurality of touch positions simultaneously, and (iii) a movement of at least one of the touch positions detected in accordance with a user's touch operation of the touch panel;
a drawing figure determination unit which, when the touch position detection unit detects a plurality of touch positions simultaneously, determines a type of a figure and a drawing-position of the figure in accordance with the touch positions detected simultaneously and a following movement of the touch positions detected by the touch position detection unit, or the touch positions detected simultaneously and a new touch position other than the touch positions detected by the touch position detection unit;
a figure display control unit which displays a figure on the display unit in accordance with the type of the figure and the drawing-position of the figure determined by the drawing figure determination unit;
a one-point locus display control unit which, when the touch position detection unit detects the single touch position and then the movement of the single touch position, displays a locus of the movement of the single touch position on the display unit;
a locus moving unit which selects and moves a locus of the movement of the touch position displayed on the display unit by the one-point locus display control unit; and
a symbol registration unit which, when the locus of the movement of the touch position is moved into a predetermined range near a characteristic point of the drawing by the locus moving unit and is released from being selected within the predetermined range, registers the locus of the movement of the touch position as a symbol indicating the characteristic point of the drawing, and arranges the locus of the movement of the touch position in a position suitable as the symbol indicating the characteristic point of the drawing.

2. The figure drawing apparatus according to claim 1 ,
wherein the touch position detection unit further detects at least one next touch position when the user's touches are released from some of the plurality of touch positions detected simultaneously in accordance with the user's touch operation of the touch panel; and
wherein the drawing figure determination unit includes a next-touch drawing figure determination unit which, when the touch position detection unit detects the next touch position, determines a figure of a type and a drawing-position of the figure corresponding to the plurality of touch positions detected simultaneously and the next touch position.

3. The figure drawing apparatus according to claim 2 , wherein the drawing figure determination unit includes:
a triangle condition judging unit which judges that conditions of a triangle are satisfied when a next touch position is detected by the touch position detection unit when one of the plurality of touch positions detected simultaneously is released;
a quadrangle condition judging unit which judges that conditions of a quadrangle are satisfied when next touch positions are detected by the touch position detection unit when some of the plurality of touch positions detected simultaneously are released; and
a determination unit which determines that the type of the figure is a triangle when the triangle condition judging unit judges that the conditions of a triangle are satisfied, and determines the drawing-position of the triangle in accordance with the touch positions detected simultaneously and the next touch position, and which determines that the type of the figure is a quadrangle when the quadrangle condition judging unit judges that the conditions of a quadrangle are satisfied, and determines the drawing-position of the quadrangle in accordance with the touch positions detected simultaneously and the next touch positions.

4. The figure drawing apparatus according to claim 1 , wherein the drawing figure determination unit includes an arc condition judging unit which judges that an arc condition is satisfied, when the touch position detection unit detects a plurality of touch positions simultaneously and further detects a movement of at least one of the plurality of touch positions,
wherein when the arc condition judging unit judges that the arc condition is satisfied, the type of the figure is determined as a circle and the drawing position thereof is determined as a position corresponding to the locus of the movement if two touch positions are detected, and the type of the figure is determined as a concentric circle and the drawing position thereof is determined as a position corresponding to the locus of the movement if three or more touch positions are detected.

5. The figure drawing apparatus according to claim 1 , wherein the drawing figure determination unit includes a parallel condition judging unit which judges that a parallel condition is satisfied, when the touch position detection unit detects a plurality of touch positions simultaneously and further detects movements of at least two of the plurality of touch positions,
wherein when the parallel condition judging unit judges that the parallel condition is satisfied, the type of the figure is determined as parallel lines and the drawing position thereof is determined as a position corresponding to the locus of the movement.

6. The figure drawing apparatus according to claim 1 , wherein the drawing figure determination unit includes:
a coordinates display judging unit which judges whether graph coordinates are displayed on the display unit;
an Nth-order curve condition judging unit which, when the coordinates display judging unit judges that the graph coordinates are displayed and the touch position detection unit detects a movement of a touch position, judges whether a locus of the movement of the touch position satisfies a condition for an Nth-order curve; and
a sinusoidal curve condition judging unit which, when the coordinates display judging unit judges that the graph coordinates are displayed and the touch position detection unit detects a movement of a touch position, judges whether the locus of the movement of the touch position satisfies a condition for a sinusoidal curve,
wherein the type of the figure is determined as an Nth-order curve and the drawing position thereof is determined as a position corresponding to the locus of the movement when the Nth-order curve condition judging unit judges that the locus of the movement of the touch position satisfies the condition for an Nth-order curve, and the type of the figure is determined as a sinusoidal curve and the drawing position thereof is determined as a position corresponding to the locus of the movement when the sinusoidal curve condition judging unit judges that the locus of the movement of the touch position satisfies the condition for a sinusoidal curve.

7. A figure drawing method of an electronic apparatus including a touch panel and a display unit, which allows a plurality of touch positions to be detected, the method comprising;
performing a touch position detection function which detects (i) a single touch position, (ii) a plurality of touch positions simultaneously, and (iii) a movement of at least single touch positions in accordance with a user's touch operation of the touch panel;
performing a drawing figure determination function for, when the touch position detection function detects a plurality of touch positions simultaneously, determining a type of a figure and a drawing-position of the figure in accordance with the touch positions detected simultaneously and a following movement of the touch positions detected by the touch position detection function, or the touch posit

Assignees

• Casio Computer Co Ltd

Inventors

• Nakamura Kazuhisa

Classifications

• G06F3/04883 Primary

  for inputting data by handwriting, e.g. gesture or text · CPC title

• G06F2203/04104

  Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger · CPC title