The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
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Transcript of The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
GRIS, TU Darmstadt Fraunhofer-IGD, DarmstadtUniversità della Calabria
The Eraser Pen: The Eraser Pen: A New Interaction A New Interaction Paradigm for Paradigm for Curve Sketching Curve Sketching in 3Din 3D
The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
2R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
IntroductionIntroduction
Shape design using intuitive 3D interaction techniques for free-form modeling increases its contribution to...
• ...visual appeal • ...ergonomic performance• ...a product’s commercial competitiveness through product differentiation
The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
3R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
Current Practice and ObstaclesCurrent Practice and Obstacles
• Current CAD tools do not serve well shape design
• Can not handle quick sketching concepts.
• Serious difficulties are encountered in the styling phase of the design process
• As a result, designers prefer to use manual sketching tools
The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
4R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
Current use of VR and AR within the Design Current use of VR and AR within the Design ProcessProcess
Virtual Validation Process
CAS model Virtual reality tools
CIM CAPE
DMU Structural analysis CFD, NVH Safety analysis
STYLING
ENGINEERING
MANUFACTURING
• Anticipating decisions and analysis• Realistic digital display
The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
5R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
Workflow for Aesthetic DesignWorkflow for Aesthetic Design
Classic Workflow
New Workflow Optimized for Aesthetic Design
The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
7R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
Related WorkRelated Work
• 3-Draw: A tool for designing 3D shapes. E. Sachs, et. al. No visual correspondence
• Ext. SKETCH by Forsberg, Zeleznik et. al. Imprecise sketching in 2D & 3D
• An Interface for Sketching 3D Curves, J.M. Cohen, et. al. Curves and shadows can be ‘overdrawn’ to change their shape.
• Free-Form Surface Design in a Virtual Environment, C.-C. P. Chu et. al Indirect and distant interaction with a ray
• Surface Drawing, Schroeder et al. Drawing polygonal structures in 3D at VT using a glove
The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
8R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
The BackgroundThe BackgroundThe user can:
• create 2D primitives, • generate 3D primitives, • sketch curves and surfaces• perform Boolean operations,• sweep faces,• access the history of an object:– to change it partially or– to copy primitives,
• delete objects.
The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
9R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
The IdeaThe Idea
Define a new interaction technique for aiding the sketching of polylines, curves and surfaces.
The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
10R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
The ImplementationThe Implementation
P5
P1
P2
P4
P3
X
Y
Z
P5
P4
P3
P0
if ( > max)draw
elseerase
The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
11R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
Extruded curve!!
Change!!
The Eraser PenThe Eraser Pen
Generation of an extruded surface
• First sketch• The red spot highlights the part that is redone• Surface by curve extrusion.
combines the creation and deletion process, rewriting
the rubber and pencil metaphor in just one tool.
The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
12R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
The Erase PenThe Erase Pen concept applied to model a skin surface
The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
13R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
The Erase Pen ..a videoThe Erase Pen ..a video
The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
14R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
The Erase Pen ..a videoThe Erase Pen ..a video
The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
15R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
Sketching free-form surfaces in Mixed Realities
Engineering applicationsEngineering applications
The Eraser Pen: A New Interaction Paradigm for Curve Sketching in 3D
16R. De Amicis, F. Bruno, A. Stork, M. L. Luchi
IGD-Darmstadt
Univ. of Technology-Darmstadt ZGDV-Darmstadt
CAPCom business & solutions -Darmstadt IGD-Frankfurt Univ. of Frankfurt
IGD-Rostock
Univ. of Rostock
ZGDV-Rostock
Ctr. for Research in Computer Graphics-Providence
Brown Univ.- Providence
Rhode Island School of Design- Providence
Univ. do Minho- Azurem Centro de Computacao Grafica Univ. of Technology-Nayang Ctr. for Advanced Media Technology- Nayang
Univ. of Technology-Vienna
Thank you !Thank you !