Integrated object bend, squash and stretch method and apparatus

• US 7,221,380 B2
• Filed: 05/06/2004
• Issued: 05/22/2007
• Est. Priority Date: 05/14/2003
• Status: Active Grant

• Current Assignee: Pixar (The Walt Disney Company)
• Original Assignee: Pixar (The Walt Disney Company)
• Inventors: Hoffman, Christian D., Russ, Robert H., Hunter, Steven Clay, Sheffler, William F., Mullins, David H. II, Wise, William A.
• Primary Examiner(s): Tung; Kee M.
• Assistant Examiner(s): SAMS, MICHELLE L
• Application Number:
  US10/841,804
• Publication Number:
  US 20050030310A1
• Time in Patent Office: 1,111 Days
• Field of Search: 345/648, 345/664, 345/473
• US Class Current: 345/648
• CPC Class Codes: G06T 19/20 Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
• CPC Class Codes: G06T 2219/2016 Rotation, translation, scaling
• CPC Class Codes: G06T 2219/2021 Shape modification

Abstract

A graphical user interface for a computer system includes a display portion configured to display a representation of a first three-dimensional object, wherein the first three-dimensional object has an associated first volume, and a control icon associated with the first three-dimensional object, wherein the control icon is configured to allow a user to specify a bend amount to the first three-dimensional object in a first dimension, wherein the display portion is also configured to display a representation of a bent first three-dimensional object, wherein the bent first three-dimensional object comprises the first three-dimensional object that is bent lengthwise in response to the bend amount, and that may have an adjusted thickness in response to the bend amount.

Claims

1. A method of object manipulation in a computer system comprises:

displaying a representation of a first three-dimensional object on a display, wherein the first three-dimensional object has an associated first axis, a second axis, a third axis, and a first volume, and wherein the first three-dimensional object has an associated initial first profile, and an associated initial second profile;

displaying a control indicator on the display, wherein the control indicator is associated with the first three-dimensional object;

receiving an offset in a direction along the second axis for the control indicator in response to user input with a user input device;

bending the first three-dimensional object in the direction along the second axis in response to the offset to form a bent first three-dimensional object, wherein the bent first three-dimensional object is associated with a second volume, wherein the bent first three-dimensional object has an associated bent first profile, and an associated bent second profile, and wherein bending also includes;

modifying a length of the first three-dimensional object along the first axis in response to the offset;

modifying a width of the first three-dimensional object in the second axis in response to the offset;

modifying the initial first profile in the direction along the second axis in response to the offset and a first rate factor to determine the bent first profile; and

modifying the second profile in the direction along the second axis in response to the offset and a second rate factor to determine the bent second profile, wherein the first rate factor and the second rate factor are different; and

displaying a representation of the bent first three-dimensional object on the display.

2. The method of claim 1

wherein a length of the bent first profile compared to a length of the initial first profile are in a first proportion;

wherein a length of the bent second profile compared to a length of the initial second profile are in a second proportion; and

wherein the first proportion is greater than the second proportion.

3. The method of claim 1 wherein the first volume and the second volume are related in a manner selected from the group consisting of:

greater than, less than, and similar.

4. The method of claim 1 wherein bending the first three-dimensional object further comprises modifying a depth of the first three-dimensional object in the third axis in response to the offset and to a volume preservation factor.

5. The method of claim 4

wherein modifying the length of the first three-dimensional object along the first axis in response to the offset comprises increasing the length of the first three-dimensional object;

and

wherein modifying the width of the first three-dimensional object in the second axis in response to the offset and to the volume preservation factor comprises decreasing the width of the first three-dimensional object.

6. The method of claim 1

wherein modifying the initial first profile in the direction along the second axis comprises:

modifying a first position along the initial first profile in the direction of the second axis by a first amount; and

modifying a second position along the initial first profile in the direction of the second axis by a second amount; and

wherein the first amount is greater than the second amount.

7. The method of claim 6 further comprising:

displaying a representation of a second three-dimensional object on a display, wherein the second three-dimensional object has an associated first axis, a second axis, a third axis, and a third volumes, wherein the second three-dimensional object has an associated initial first profile, and an associated initial second profile;

bending the second three-dimensional object in the direction along the second axis in response to the offset to form a bent second three-dimensional object, wherein the bent second three-dimensional object is associated with a fourth volume, wherein the bent second three-dimensional object has an associated bent first profile, and an associated bent second profile and wherein bending also includes;

modifying a length of the second three-dimensional object along the first axis in response to the offset;

modifying a width of the second three-dimensional object in the second axis in response to the offset and to a volume preservation factor;

modifying the initial first profile in the direction along the second axis in response to the offset and a third rate factor to determine the bent first profile; and

modifying the second profile in the direction along the second axis in response to the offset and a fourth rate factor to determine the bent second profile, wherein the third rate factor and the fourth rate factor are different; and

displaying a representation of the bent second three-dimensional object on the display;

wherein the control indicator is also associated with the second three-dimensional object.

8. The method of claim 7 further comprising:

rendering the bent first three-dimensional object and the bent second three-dimensional object to form rendered objects; and

storing the rendered objects in a frame of animation into a memory.

9. A computer-readable storage media configured to store the frame of animation including the rendered objects determined according to the process described in claim 8.

10. A computer program product stored on a computer-readable tangible media containing executable instructions for execution on a computer system including a processor and a display includes:

code that directs the processor to display a representation of a first object on the display, wherein the first object has an associated first volume;

code that directs the processor to receive an indication of a bend value associated with the first object in a first dimension;

code that directs the processor to determine a first bent object comprising;

code that directs the processor to modify positions along a first-profile associated with the first object in the first dimension in response to the bend value and to a first weighting factor;

code that directs the processor to modify positions along a second profile associated with the first object in the first dimension in response to the bend value and to a second weighting factor, wherein the first weighting factor is different from the second weighting factor; and

code that directs the processor to modify a thickness of the first object in response to the bend value; and

code that directs the processor to display a representation of the first bent object on the display, wherein the first bent object has an associated second volume.

11. The computer program product of claim 10 wherein the second volume is related to the first volume in a manner selected from the group consisting of:

substantially similar, greater than, less than.

12. The computer program product of claim 11 further comprising code that directs the processor to determine a volume preservation factor in response to user input from a device selected from the group consisting of:

keyboard, graphical user interface, microphone.

13. The computer program product of claim 12 wherein code that directs the processor to determine a first bent object further comprises code that directs the processor to modify a depth of the first object in response to the bend value and to the volume preservation factor.

14. The computer program product of claim 13 wherein code that directs the processor to modify the thickness of the first object comprises:

code that directs the processor to modify a thickness of the first object at a first location by a first amount in response to the bend value and to the volume preservation factor; and

code that directs the processor to modify a thickness of the first object at a second location by a second amount in response to the bend value and to the volume preservation factor;

wherein the first amount and the second amount are different.

15. The computer program product of claim 10

wherein the bend value is also associated with the second object in the first dimension;

wherein the computer program product further comprises;

code that directs the processor to display a representation of a second object on the display, wherein the second object has an associated third volume;

code that directs the processor to determine a volume preservation factor;

code that directs the processor to determine a second bent object comprising;

code that directs the processor to modify a shape of a spline associated with the second object in response to the bend value; and

code that directs the processor to modify a thickness of the second object in response to the bend value and to the volume preservation factor; and

code that directs the processor to display a representation of the second bent object on the display, wherein the second bent object has an associated fourth volume.

16. The computer program product of claim 10 wherein

a first position on the first profile is modified by a first amount in the first dimension;

wherein a second position on the second profile is modified by a second amount in the first dimension; and

wherein the first amount is different from the second amount.

17. A graphical user interface for a computer system includes:

a display portion configured to display a representation of a first three-dimensional object, wherein the first three-dimensional object has an associated first volume wherein the first three-dimensional object has an associated initial first profile, and an associated initial second profile; and

a control icon associated with the first three-dimensional object, wherein the control icon is configured to allow a user to specify a bend amount to the first three-dimensional object in a first dimension;

wherein the display portion is also configured to display a representation of a bent first three-dimensional object, wherein the bent first three-dimensional object comprises the first three-dimensional object that is bent lengthwise in response to the bend amount, wherein the bent first three-dimensional object has an associated bent first profile, and an associated bent second profile, wherein the initial bent first profile is displaced in the first dimension in response to the bend amount and to a first weighting factor, wherein the initial bent second profile is displaced in the first dimension in response to the bend amount and to a second weighting factor, wherein the first weighting factor and the second weighting factor are different, and that has an adjusted thickness in response to the bend amount and to a volume preservation factor.

18. The graphical user interface of claim 17 further comprising a display portion configured to display the volume preservation factor.

19. The graphical user interface of claim 18

wherein the bend amount is associated with a lengthening of the first three-dimensional object;

and

wherein the adjusted thickness is less than an original thickness of the first three-dimensional object.

20. The graphical user interface of claim 18

wherein the bent object has an associated second volume;

and

wherein the first volume is related to the second volume in response to the volume preservation factor.

21. The graphical user interface of claim 20 wherein the first volume is approximately equal to the second volume.

22. The graphical user interface of claim 17

wherein the display portion is also configured to display a representation of a second three-dimensional object, wherein the second three-dimensional object has an associated third volume;

wherein the control icon is also associated with the second three-dimensional object, and wherein the bend amount is associated with the second three-dimensional object; and

wherein the display portion is also configured to display a representation of a bent second three-dimensional object, wherein the bent second three-dimensional object comprises the second three-dimensional object that is bent lengthwise in response to the bend amount, and that has an adjusted thickness in response to the bend amount and to the volume preservation factor.

23. The graphical user interface of claim 17

wherein a first position on the first profile is modified by a first amount in the first dimension;

wherein a second position on the first profile is modified by a second amount in the first dimension; and

wherein the first amount is different from the second amount.