Autoscaling

• US 20050046645A1
• Filed: 07/22/2004
• Published: 03/03/2005
• Est. Priority Date: 07/24/2003
• Status: Abandoned Application

• Current Assignee: Autodesk, Inc.
• Original Assignee: Autodesk, Inc.
• Inventors: Breton, Pierre Felix, Robitaille, Xavier
• Application Number:
  US10/897,041
• Publication Number:
  US 20050046645A1
• Time in Patent Office: Days
• US Class Current: 345/660
• CPC Class Codes: G06T 13/20 3D [Three Dimensional] animation
• CPC Class Codes: G06T 15/20 Perspective computation

Abstract

A method of scaling motion data input is provided in a system for interacting with objects, in a three-dimensional volume. The system includes a viewport onto which a two-dimensional image of the volume is displayed. A user provides motion input data to translate the volume or an object within the volume. A distance between a target and a portion of the viewport is calculated, and a scaling factor, based on the distance is calculated. The motion input data is incremented according to the scaling factor.

Claims

1. A computer readable medium storing instructions for causing a computer to scale motion input data during application of a transformation to an object in a three-dimensional volume by performing the steps of:

identifying a target within the volume;

calculating a distance between the target and a position within a viewport, the viewport displaying a two dimensional projection of the volume;

calculating a scaling factor based on the distance;

receiving motion input data; and

processing the motion input data based on the scaling factor.

2. The computer readable medium of claim 1, wherein the scaling factor is a portion of the distance.

3. The computer readable medium of claim 4, wherein the portion is determined based on a camera mode or a perspective mode.

4. The computer readable medium of claim 1, wherein the target is a surface of the object nearest to the viewport intersected by a view axis, the view axis projecting from the position within the viewport through the volume.

5. The computer readable medium of claim 1, further comprising the step of receiving transformation selection data, the transformation selection data specifying a translation operation, a rotation operation, or a scaling operation.

6. The computer readable medium of claim 5, wherein the motion input data is constrained to two dimensions of the three dimensional volume, the two dimensions specified by the transformation selection data.

7. The computer readable medium of claim 5, wherein the processing includes incrementing the motion input data by the scaling factor during application of an operation specified by the transformation selection data.

8. The computer readable medium of claim 1, wherein a second object is selected for processing by the motion input data and the target is a geometric center of the second object intersected by a view axis, the view axis projecting from the position within the viewport through the volume.

9. The computer readable medium of claim 1, wherein the scaling factor is an input data increment for the processing of the motion input data.

10. A method for causing a computer to scale motion input data during application of a transformation to an object in a three-dimensional volume, comprising:

identifying a target within the volume;

calculating a distance between the target and a position within a viewport, the viewport displaying a two dimensional projection of the volume;

calculating a scaling factor based on the distance;

receiving motion input data; and

processing the motion input data based on the scaling factor.

11. The method of claim 10, wherein the scaling factor is a portion of the distance.

12. The method of claim 10, wherein the target is a surface of the object nearest to the viewport intersected by a view axis, the view axis projecting from the position within the viewport through the volume.

13. The method of claim 10, further comprising the step of receiving transformation selection data, the transformation selection data specifying a translation operation, a rotation operation, or a scaling operation.

14. The method of claim 13, wherein the processing includes incrementing the motion input data by the scaling factor during application of an operation specified by the transformation selection data.

15. The method of claim 13, wherein the motion input data is constrained to two dimensions of the three dimensional volume, the two dimensions specified by the transformation selection data.

16. The method of claim 10, wherein a second object is selected for processing by the motion input data and the target is a geometric center of the second object intersected by a view axis, the view axis projecting from the position within the viewport through the volume.

17. The method of claim 10, wherein the scaling factor is an input data increment for the processing of the motion input data.

18. A system for causing a computer to scale motion input data during application of a transformation to an object in a three-dimensional volume, the system comprising:

means for identifying a target within the volume;

means for calculating a distance between the target and a position within a viewport, the viewport displaying a two dimensional projection of the volume;

means for calculating a scaling factor based on the distance;

means for receiving motion input data; and

means for processing the motion input data based on the scaling factor.

19. The system of claim 18, further comprising means for selecting a second object for processing by the motion input data.

20. The system of claim 18, further comprising means for incrementing the motion input data by the scaling factor during application of an operation specified by transformation selection data.