METHOD FOR OBJECT ROTATING BY UTILIZING COORDINATE AXIS RATIO AND DIFFERENCE

• US 20130201125A1
• Filed: 01/09/2013
• Published: 08/08/2013
• Est. Priority Date: 02/03/2012
• Status: Abandoned Application

• Current Assignee: HannStar Display Corporation
• Original Assignee: HannStar Display Corporation
• Inventors: LEE, MENG-JU
• Application Number:
  US13/737,347
• Publication Number:
  US 20130201125A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

A method of display rotation by using axis ratio and difference is disclosed. The method includes: performing a first determination step to determine whether or not two touching points exist within an object shown in a screen by using a touch algorithm; if yes, capturing X-coordinate values and Y-coordinate values of the two touching points on an X-axis and a Y-axis respectively; performing a second determination step to determine the touching point with smaller Y-coordinate value as an axle center point and the another touching point with bigger Y-coordinate value as a rotation point; performing a third determination step after the rotation point shifts to rotate object leftward or rightward by using the modulus of the variation of the ratio of the Y-coordinate value to the X-coordinate value of the rotation point and whether the axle center point and the rotation point are located on the X-axis or Y-axis.

Claims

1. A method for object rotating by utilizing coordinate axis ratio and difference comprising:

performing a first determination step to determine whether or not two touching points are provided through a touch algorithm;

executing a capture motion to respectively capture Y-coordinate values and X-coordinate values of the two touching points on an X-axis and a Y-axis if the two touching points are provided, and executing a second determination step to determine whether one touching point of the two touching points is an axle center point and another touching point of the two touching points is a rotation point; and

executing a third determination step to determine a modulus for a variation of a ratio (a Y/X value) of the Y-coordinate value to the X-coordinate value of the rotation point or whether the rotation point and the axle center point are located on the X-axis or the Y-axis to perform an object left rotation motion or an object right rotation motion if the rotation point is displaced.

2. The method for object rotating by utilizing coordinate axis ratio and difference as recited in claim 1, wherein the capture motion is to capture the Y-coordinate value and the X-coordinate value of the two touching points through a microprocessor.

3. The method for object rotating by utilizing coordinate axis ratio and difference as recited in claim 1, wherein the Y-coordinate value of the axle center point is smaller than the Y-coordinate value of the rotation point.

4. The method for object rotating by utilizing coordinate axis ratio and difference as recited in claim 1, wherein after the rotation point is displaced, the ratio of the Y-coordinate value to the X-coordinate value of the rotation point is reduced, and the a modulus of a variation of the ratio of the Y-coordinate value to the X-coordinate value of the rotation point is greater than a set value, and the object right rotation motion is performed.

5. The method for object rotating by utilizing coordinate axis ratio and difference as recited in claim 4, wherein the variation of the ratio of the Y-coordinate value to the X-coordinate value of the rotation point is a difference that subtracts the ratio of the Y-coordinate value to the X-coordinate value of the rotation point, which is not displaced yet, from the ratio of the Y-coordinate value to the X-coordinate value of the rotation point which is displaced.

6. The method for object rotating by utilizing coordinate axis ratio and difference as recited in claim 1, wherein after the rotation point is displaced, the ratio of the Y-coordinate value to the X-coordinate value of the rotation point is increased, and the a modulus of a variation of the ratio (Y/X value) of the Y-coordinate value to the X-coordinate value of the rotation point is greater than the set value, and the object left rotation motion is performed.

7. The method for object rotating by utilizing coordinate axis ratio and difference as recited in claim 6, wherein the variation of the ratio of the Y-coordinate value to the X-coordinate value of the rotation point is the difference that subtracts the ratio of the Y-coordinate value to the X-coordinate value of the rotation point, which is not displaced yet, from the ratio of the Y-coordinate value to the X-coordinate value of the rotation point which is displaced.

8. The method for object rotating by utilizing coordinate axis ratio and difference as recited in claim 1, wherein in the second determination step, if the two touching points are simultaneously located at the Y-coordinate axis and the X-coordinate value is 0, the object right rotation motion is performed.

9. The method for object rotating by utilizing coordinate axis ratio and difference as recited in claim 1, wherein in the second determination step, if the two touching points are simultaneously located at the X-coordinate axis and the Y-coordinate value is 0, the object left rotation motion is performed.