8/14/2019 Animation Slide 4

1/18

Lecture 4MODELLING (PRIMITIVE OBJECTS)

Prepared by:

Rosiadi Bin Tajudin

KOLEJ KOMUNITI KEPALA BATAS MINISTRY OF HIGHER EDUCATION

8/14/2019 Animation Slide 4

2/18

Learning objectivesAt the end of this topic, you will be able to:

State the basic element of model structure.

Know the basic modeling techniques.

Use primitive objects to create 3D model.

Group the geometry objects being used in a model.

Save and render the final model.

8/14/2019 Animation Slide 4

3/18

3D object consists of the combinations of vertex, edge, and

face.

Vertex is the smallest element, consist of a small dot.

Edge is the combination of 2 vertex.

Face is the combination of 3 vertex.

Element / Segment is the combination of many vertex to

form a complex object.

Model StructureElements

8/14/2019 Animation Slide 4

4/18

Object is the compilation of elements / segments to form a

proper 3D objects.

Model Structure

8/14/2019 Animation Slide 4

5/18

Model Structure

8/14/2019 Animation Slide 4

6/18

Primitives

Technique of creating 3D model by using basic geometricalshapes called as primitive objects.

Ex : Box, cylinder, tube, cone, sphere, torus, hadra, teapot,

geosphere and plane.

Object can be modified by using certain operation such as

Boolean operation.

Modeling techniques

8/14/2019 Animation Slide 4

7/18

8/14/2019 Animation Slide 4

8/18

2D Shapes

Technique of creating 3D model by using 2D shapes(Spline).

Ex : Line, rectangle, Ngon, star, circle, arc, ellipse, donut,

helix and text.

The 2D shapes can be manipulated by using shape

modifiers to form 3D objects.

Modeling techniques

8/14/2019 Animation Slide 4

9/18

2D Shapes

Modeling techniques

8/14/2019 Animation Slide 4

10/18

Polygon Modeling

Technique of creating 3D model with the manipulation ofvertex on the geometrical object.

Modeling techniques

8/14/2019 Animation Slide 4

11/18

Patch Modeling

Technique of creating 3D model with the manipulation ofelements in a surface called as lattice.

Lattice is the grid lines which have control over the vertices.

Modeling techniques

8/14/2019 Animation Slide 4

12/18

Patch Modeling

Modeling techniques

8/14/2019 Animation Slide 4

13/18

NURBS

Non-Uniform Rational Basis Spline (NURBS).

Technique of creating 3D model with the combination of few

lines called as NURBS Curves to form a plane and smooth

surfaces.

Modeling techniques

8/14/2019 Animation Slide 4

14/18

NURBS

Modeling techniques

8/14/2019 Animation Slide 4

15/18

Conclusion

3D object = combinations of vertex, edge, face.

Five common techniques to create 3D model is:

1. Primitives

2. 2D Shapes

3. Polygon modeling

4. Patch modeling

5. NURBS

8/14/2019 Animation Slide 4

16/18

Modeling PrimitiveObjects

Tutorial

8/14/2019 Animation Slide 4

17/18

ExerciseInstruction

By using any geometrical 3D objects in standard primitive (Command Panels > Create

Panels > Geometry Tools), you have to create a 3D robot model. Based on you

creativity, you may use any geometry objects to create your model at any size. Follow

the instruction below:

4. Create a 3D robot model.

5. Render your final 3D model into .jpeg file format and name it as robot.jpeg.

6. Print out your robot.jpeg file (color) on a piece of paper (A4 size) and glue it on a thick

paper.

7. Give name to you 3D robot model.

8.You have to present your 3D model individually.

9. During your presentation, specify types of geometrical objects you used in creating the

model.

10.Please return this paper to your lecturer during presentation day.

Presentation : 31 July 2008 (Thursday)

Evaluation : Model (5%) + Creativity (5%) + Presentation (5%)

8/14/2019 Animation Slide 4

18/18

Thank you for beingattentive