Collision detection

In physical simulations, video games and computational geometry, collision detection includes algorithms from checking for collision, i.e. intersection, of two given solids, to calculating trajectories, impact times and impact points in a physical simulation. Collision detection - Overview. In physical simulation, we wish to conduct experiments, such as playing billiards. The physics of bouncing billiard balls are well understood, under the umbrella of rigid body motion and elastic collisions. An initial de ...

Including:

• Collision detection - Overview
• Collision detection - Collision detection in physical simulation
• Collision detection - A posteriori vs a priori
• Collision detection - n-body pruning
• Collision detection - Temporal coherence
• Collision detection - Physically based temporal coherence
• Collision detection - Pairwise pruning
• Collision detection - Exact pairwise collision detection
• Collision detection - A priori collision detection
• Collision detection - Spatial partitioning miscellanea
• Collision detection - Collision detection in video games
• Collision detection - Collision detection in computational geometry

Read more here: » Collision detection: Encyclopedia - Collision detection

Physical simulators usually function one of two ways, we shall refer to them as the a posteriori and a priori methods. In addition to the a posteriori and a priori distinction, almost all modern collision detection algorithms are broken into a hierarchy of algorithms. Collision detection - A posteriori vs a priori. In the a posteriori case, we advance the physical simulation by a small time step, then check if any objects are intersecting, or are somehow so close to each ...

See also:

Collision detection, Collision detection - Overview, Collision detection - Collision detection in physical simulation, Collision detection - A posteriori vs a priori, Collision detection - n-body pruning, Collision detection - Temporal coherence, Collision detection - Physically based temporal coherence, Collision detection - Pairwise pruning, Collision detection - Exact pairwise collision detection, Collision detection - A priori collision detection, Collision detection - Spatial partitioning miscellanea, Collision detection - Collision detection in video games, Collision detection - Collision detection in computational geometry

Read more here: » Collision detection: Encyclopedia II - Collision detection - Collision detection in physical simulation

Collision - Dynamics. In physics, collision means the action of bodies striking or coming together (touching). Collisions involve forces (there is a change in velocity). Collisions can be elastic, meaning they conserve energy and momentum, inelastic, meaning they conserve momentum but not energy, or totally inelastic (or plastic), meaning they conserve momentum and the two objects stick together. The magnitude of the velocity difference at impact is called the closing speed. The field of dynamics is concerned with moving and colliding objects. ...

See also:

Collision, Collision - Physical collision, Collision - Dynamics, Collision - Billiards, Collision - Traffic, Collision - Attacks by means of a deliberate collision, Collision - Others, Collision - Telecommunications

Read more here: » Collision: Encyclopedia II - Collision - Physical collision

Collision - Dynamics. In physics, collision means the action of bodies striking or coming together (touching). Collisions involve forces (there is a change in velocity). Collisions can be elastic, meaning they conserve energy and momentum, inelastic, meaning they conserve momentum but not energy, or totally inelastic (or plastic), meaning they conserve momentum and the two objects stick together. The magnitude of the velocity difference at impact is called the closing speed. The field of dynamic ...

Including:

• Collision - Physical collision
• Collision - Dynamics
• Collision - Billiards
• Collision - Traffic
• Collision - Attacks by means of a deliberate collision
• Collision - Others
• Collision - Telecommunications

Read more here: » Collision: Encyclopedia - Collision

A common aspect of computer games that model some type of conflict is the explosion. Early computer games used the simple expediency of repeating the same explosion in each circumstance. However, in the real world an explosion can vary depending on the terrain, altitude of the explosion, and the type of solid bodies being impacted. Depending on the processing power available, the effects of the explosion can be modeled as the split and shattered components are propelled by the expanding gas. This is modeled by means of a particle syst ...

See also:

Game physics, Game physics - Particle systems, Game physics - Ragdoll physics

Read more here: » Game physics: Encyclopedia II - Game physics - Particle systems

Attacks by means of a deliberate collision can be: with the body: unarmed striking, punching, kicking, martial arts, pugilism striking directly with a mêlée weapon, such as a sword, club or axe An attacking collision with a distant object can be achieved by throwing or launching a projectile. Projectiles can be: unpowered, thus depending on momentum transferred from the launcher: arrow catapult bullet spear artillery powered in flight: rocket ...

See also:

Collision, Collision - Physical collision, Collision - Dynamics, Collision - Billiards, Collision - Traffic, Collision - Attacks by means of a deliberate collision, Collision - Others, Collision - Telecommunications

Read more here: » Collision: Encyclopedia II - Collision - Attacks by means of a deliberate collision

Video games have to split their very limited computing time between several tasks. This added to the limited resources of the programmers, the less strict goals of believable (and not necessarily exact) simulation and (perhaps most importantly) the real-time requirement have combined in such a way that video games, for the most part, have used relatively primitive collision detection algorithms, alt ...

See also:

Collision detection, Collision detection - Overview, Collision detection - Collision detection in physical simulation, Collision detection - A posteriori vs a priori, Collision detection - n-body pruning, Collision detection - Temporal coherence, Collision detection - Physically based temporal coherence, Collision detection - Pairwise pruning, Collision detection - Exact pairwise collision detection, Collision detection - A priori collision detection, Collision detection - Spatial partitioning miscellanea, Collision detection - Collision detection in video games, Collision detection - Collision detection in computational geometry

Read more here: » Collision detection: Encyclopedia II - Collision detection - Collision detection in video games

In physical simulation, we wish to conduct experiments, such as playing billiards. The physics of bouncing billiard balls are well understood, under the umbrella of rigid body motion and elastic collisions. An initial description of the situation would be given, with a very precise physical description of the billiard table and balls, as well as initial positions of all the balls. Given a certain impulsion on the white ball (probably resulting from a player hitting the ball with his cue), we want to calculate the trajectories, precise motion ...

See also:

Collision detection, Collision detection - Overview, Collision detection - Collision detection in physical simulation, Collision detection - A posteriori vs a priori, Collision detection - n-body pruning, Collision detection - Temporal coherence, Collision detection - Physically based temporal coherence, Collision detection - Pairwise pruning, Collision detection - Exact pairwise collision detection, Collision detection - A priori collision detection, Collision detection - Spatial partitioning miscellanea, Collision detection - Collision detection in video games, Collision detection - Collision detection in computational geometry

Read more here: » Collision detection: Encyclopedia II - Collision detection - Overview