Computer Graphics Computer Animation& lighting Faculty of Physical and Basic Education Computer Science Dep Lecturer: 16 Azhee W. MD.

Outline 2 Example 1. Find the cubic polynomial or that passes through the four points and satisfies  Principles of animation  Key frame animation  Articulated figures University of sulaimanyiah - Faculty of Physical and Basic Education - Computer Dep

What is Computer Animation? 3 Example 1. Find the cubic polynomial or that passes through the four points and satisfies Refers to any time sequence of visual changes in a picture  Changes: position, size, color, transparency, surface texture, varying camera parameters, or lighting effects  Two basic methods to construct a motion sequence Real-time animation: each frame stage of the sequence is viewed as it is created Frame-by-frame animation: each frame of the motion is separately generated and stored University of sulaimanyiah - Faculty of Physical and Basic Education - Computer Dep

What is Computer Simulation? 4 Example 1. Find the cubic polynomial or that passes through the four points and satisfies  What is Animation? Make objects change over time according to scripted actions  What is Simulation? Predict how objects change over time according to physical laws University of sulaimanyiah - Faculty of Physical and Basic Education - Computer Dep

Principles of Traditional Animation 5  Squash and stretch, Slow In and out, Anticipation, Exaggeration, Follow through and overlapping action, Timing, Staging, Straight ahead action and pose-to-pose action, Arcs, Secondary action, Appeal University of sulaimanyiah - Faculty of Physical and Basic Education - Computer Dep

Animation Pipeline 6  3D modeling  Motion specification, Motion simulation  Shading, lighting, & rendering, Post processing University of sulaimanyiah - Faculty of Physical and Basic Education - Computer Dep

Key frame Animation 7  > Define Character Poses at Specific Time Steps Called “Key frames”  > Interpolate Variables Describing Key frames to Determine Poses for Character in between University of sulaimanyiah - Faculty of Physical and Basic Education - Computer Dep

Interpolation 8 * Linear Interpolation Usually not enough continuity * Spline Interpolation University of sulaimanyiah - Faculty of Physical and Basic Education - Computer Dep

Articulated Figures 9 Example 1. Find the cubic polynomial or that passes through the four points and satisfies Character Poses Described by Set of Rigid Bodies Connected by “Joints” Joints Provide Handles for Moving Articulated Figure University of sulaimanyiah - Faculty of Physical and Basic Education - Computer Dep

Motion Capture 10 Example 1. Find the cubic polynomial or that passes through the four points and satisfies Motion capture = Motion tracking = Mocap Process of recording movement and translating the movement onto a digital model To animate digital character models in 3D animation Records actions of human actors, and use the information gathered Motion of an actor can be captured with various methods Markers Without Markers (Optical) Mechanical motion Magnetic system Application Military training simulations Video games Films Sports Medical applications University of sulaimanyiah - Faculty of Physical and Basic Education - Computer Dep