GRAVITY POINT DRAWING METHOD

• US 20140375655A1
• Filed: 05/30/2014
• Published: 12/25/2014
• Est. Priority Date: 06/24/2013
• Status: Active Grant

• Current Assignee: Adobe Inc.
• Original Assignee: Adobe Systems Incorporated (Adobe Inc.)
• Inventors: GOU, DONGFANG
• Granted Patent: US 9,779,521 B2
• Time in Patent Office: Days
• US Class Current: 345/442
• CPC Class Codes: G06T 11/203 Drawing of straight lines or curves

Abstract

A system and method of a gravity point drawing that simulate a physical model to draw or modify vector curves. A node is identified in a drawing of a graphical application. A size of a predefined space around the node and an intensity value associated with the node are determined. The intensity value affects the curvature of a vector curve in the predefined space. The vector curve is generated in the predefined space. The curvature of the vector curve is based on the size of the predefined space and the intensity value associated with the node in the drawing.

Claims

1. A method comprising:

identifying a node in a drawing of a graphical application embodied in a processor of a machine;

determining a size of a predefined space around the node and an intensity value associated with the node, the intensity value affecting a curvature of a vector curve in the predefined space; and

generating the vector curve in the predefined space, the curvature of the vector curve based on the size of the predefined space and the intensity value associated with the node in the drawing.

2. The method of claim 1, further comprising:

receiving an identification of the node selected by a user of the graphical application;

adjusting the size of the predefined space around the node and the intensity value associated with the node to modify a shape of the vector curve in the predefined space; and

adjusting the curvature of the vector curve in the predefined space in the drawing based on the adjusted size of the predefined space and the adjusted intensity value associated with the node.

3. The method of claim 1, wherein the predefined space comprises a region with the node as a center of the region.

4. The method of claim 1, further comprising:

generating the vector curve using a physical model vector curve having a curvature based on the intensity value associated with the node as a representation of a measure of gravitational force from the node in the drawing in a ray mode.

5. The method of claim 4, further comprising:

generating the vector curve relative to a line segment between a first intersection point found between an existing curve and a perimeter of the predefined space and a second intersection point found between the existing curve and the perimeter of the predefined space in an arch mode.

6. The method of claim 4, further comprising:

shifting points of an existing curve in the predefined space along an axis perpendicular to a line segment between a first intersection point found between the existing curve and a perimeter of the predefined space and a second intersection point found between the existing curve and the perimeter of the predefined space in an arch mode.

7. The method of claim 4, further comprising:

shifting points of an existing curve in the predefined space along a radial axis of the node in an expand mode.

8. The method of claim 4, wherein the vector curve is part of a curve in the drawing, the vector curve comprising a portion of the curve in a predefined space, portions of the curve outside the predefined space are not affected by the node in the drawing.

9. The method of claim 1, further comprising:

increasing the intensity value associated with the node to increase the curvature of the vector curve towards the node in the predefined space;

decreasing the intensity value associated with the node to decrease the curvature of the vector curve towards the node in the predefined space; and

adjusting the curvature of the vector curve away from the node in the predefined space when the intensity value is negative.

10. The method of claim 1, further comprising:

identifying a first node and a second node in the drawing;

determining a first size of a first predefined space around the first node and a first intensity value associated with the first node, the first intensity value affecting a curvature of a first vector curve in the first predefined space;

determining a second size of a second predefined space around the second node and a second intensity value associated with the second node, the second intensity value affecting a curvature of a second vector curve in the second predefined space, the first predefined space intersecting the second predefined space to form a common predefined space; and

generating a common vector curve in the common predefined space, a curvature of the common vector curve based on the size of the first and second predefined spaces and the intensity value associated with the first and second nodes.

11. A system comprising:

a memory configured to store a graphical application; and

a processor coupled to the memory, the processor comprising;

a node identifier configured to identify a node in a drawing of the graphical application;

a node attribute module configured to determine a size of a predefined space around the node and an intensity value associated with the node, the intensity value affecting a curvature of a vector curve in the predefined space; and

a vector curve generator configured to generate the vector curve in the predefined space, the curvature of the vector curve based on the size of the predefined space and the intensity value associated with the node.

12. The system of claim 11, wherein the node identifier is further configured to:

receive an identification of the node selected by a user of the graphical application;

adjust the size of the predefined space around the node and the intensity value associated with the node to modify a shape of the vector curve in the predefined space; and

adjust the curvature of the vector curve in the predefined space in the drawing based on the adjusted size of the predefined space and the adjusted intensity value associated with the node.

13. The system of claim 11, wherein the predefined space comprises a region with the node as a center of the region.

14. The system of claim 11, wherein the vector curve generator comprises a ray mode module configured to generate a physical model vector curve having a curvature based on the intensity value associated with the node as a representation of a measure of gravitational force from the node in the drawing.

15. The system of claim 14, wherein the vector curve generator comprises an arch mode module configured to generate the vector curve relative to a line segment between a first intersection point found between an existing curve and a perimeter of the predefined space and a second intersection point found between the existing curve and the perimeter of the predefined space.

16. The system of claim 14, wherein the vector curve generator comprises an arch mode module configured to shift points of an existing curve in the predefined space along an axis perpendicular to a line segment between a first intersection point found between the existing curve and a perimeter of the predefined space and a second intersection point found between the existing curve and the perimeter of the predefined space.

17. The system of claim 14, wherein the vector curve generator comprises an arch mode module configured to shift points of an existing curve in the predefined space along a radial axis of the node.

18. The system of claim 11, wherein the vector curve generator is configured to:

increase the intensity value associated with the node to increase the curvature of the vector curve towards the node in the predefined space;

decrease the intensity value associated with the node to decrease the curvature of the vector curve towards the node in the predefined space; and

adjust the curvature of the vector curve away from the node in the predefined space when the intensity value is negative.

19. The system of claim 11, wherein the node identifier is configured to identify a first node and a second node in the drawing,

wherein the node attribute module is configured to determine a first size of a first predefined space around the first node and a first intensity value associated with the first node, the first intensity value affecting a curvature of a first vector curve in the first predefined space, to determine a second size of a second predefined space around the second node and a second intensity value associated with the second node, the second intensity value affecting a curvature of a second vector curve in the second predefined space, the first predefined space intersecting the second predefined space to form a common predefined space, and

wherein the vector curve generator is configured to generate a common vector curve in the common predefined space, a curvature of the common vector curve based on the size of the first and second predefined spaces and the intensity value associated with the first and second nodes in the drawing.

20. A non-transitory machine-readable storage medium storing instructions which, when executed by at least one processor, performs operations comprising:

identifying a node in a drawing of a graphical application;

determining a size of a predefined space around the node, and an intensity value associated with the node, the intensity value affecting a curvature of a vector curve in the predefined space; and

generating the vector curve in the predefined space, the curvature of the vector curve based on the size of the predefined space and the intensity value associated with the node in the drawing.