GRAPHICS CONCEPTS

Coordinate systemsModel Coordinate System (MCS)

World Coordinate System (WCS)

Screen Coordinate System (SCS)

Model Coordinate SystemThe MCS is defined as the reference space of the model with respect to which all the model geometrical data is stored. The origin of MCS can be arbitrary chosen by the user.

World Coordinate System

Screen Coordinate System

TransformationsTranslationScalingReflectionRotation Concatenated transformation

TRANSLATION

SCALING

REFLECTION

HIDDEN LINE REMOVAL

Visibility Techniques

Hidden line removal Algorithm

Priority AlgorithmArea oriented algorithm

VISIBILITY TECHNIQUESMinimax test

Containment test

Computing silhouettes

Surface test

Edge intersection

Segment comparison

Homogeneity test

MINIMAX TEST

CONTAINMENT TEST

COMPUTING SILHOUETTES