Physically-Based Animation in Performing Accuracy Bouncing Simulation

Loh Ngiik Hoon

doi:10.14569/ijacsa.2020.0110952

Abstract

This study investigates the use of physics formulas in achieving plausible bouncing simulation in animation. The need for physics animation was to produce visually believable animations adhering to the basic laws of physics. Based on the review, the creation of accurate timing simulation in bouncing dynamic was significantly difficult particularly in setting keyframes. It was comprehensible that setting the value of keyframes was unambiguous while specifying the timing for keyframes was a harder task and often time-consuming. The case study of bouncing balls’ simulation was carried out in this research and the variables of mass, velocity, acceleration, force, and gravity are taking into consideration in the motion. However, the bouncing dynamic is a significant study in animation. It is often used and it shows many different aspects of animations, such as a falling object, walking, running, hopping, and juggling. Therefore, the physical framework was proposed in this study based on numerical simulations, as the real-time animation can be addressed for controlling the motion of bouncing dynamic object in animation. Animation based physics algorithm provided the animator the ability to control the realism of animation without setting the keyframe manually, to provide an extra layer of visually convincing simulation.

Highlights

The concept of physically based in animation has been long established by Disney artists through “The Twelve Basic Principles of Animation”
Based on the review and information collected of physical measurement for bouncing balls simulation, it can be broken down into five distinct stages to analyze the details of physics calculation, to apply the accurate algorithm of bouncing simulation in animation
It has been proven that the use of physics formulas would achieve realistic bouncing simulation

Summary

INTRODUCTION

The concept of physically based in animation has been long established by Disney artists through “The Twelve Basic Principles of Animation”. The concept of physics motion can be interpreted with the principle of bouncing ball simulation. Bouncing ball simulation causes the natural factors of motion, velocity, acceleration, mass, gravity, friction, elasticity, or squash and stretch, and timing. This concept of a bouncing ball is often used in the animation as a reference because it integrates several fundamental concepts that animators apply to just about everything they animate. Based on the physical motion regarding numerical simulations framework, the animator is provided with the ability to control the realism motion of simulated object without setting the keyframe manually, by adding an extra layer of visually convincing animation. The different section of introduction, literature review, analysis physics motion of bouncing simulation, physics motion, real time dynamic bouncing ball, result and findings, implication, discussion, and conclusion are discussed in this paper

Concept of Physically based Animation

Bouncing Ball Animation

ANALYSIS PHYSICS MOTION OF BOUNCING SIMULATION

PHYSICS MOTION AND REAL TIME DYNAMIC BOUNCING BALL

RESULTS AND FINDINGS

CONCLUSION