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Yamyam https://wiki.blender.jp/index.php?title=Doc:2.6/Manual/Physics/Collision&diff=106230&oldid=prev 2014-11-11T08:02:17Z

<p></p> <p><b>新規ページ</b></p><div>{{Page/Header|2.5|Doc:2.5/Manual/Physics/Force Fields|Doc:2.5/Manual/Physics/Soft Bodies}}<br /> <br /> = Collisions =<br /> <br /> [[Doc:2.6/Manual/Physics/Particles|Particles]], [[Doc:2.6/Manual/Physics/Soft Body|Soft Bodies]] and [[Doc:2.6/Manual/Physics/Cloth|Cloth objects]] may collide with mesh objects. [[Doc:2.6/Manual/Physics/Particles/Physics/Boids|Boids]] try to avoid {{Literal|Collision}} objects.<br /> <br /> *The objects need to share at least one common layer to have effect.<br /> *You may limit the effect on particles to a group of objects (in the [[Doc:2.6/Manual/Physics/Particles/Physics|Field Weights panel]]).<br /> *''Deflection'' for softbody objects is difficult, they often penetrate the colliding objects.<br /> *{{Literal|Hair}} particles ignore deflecting objects (but you can animate them as softbodies which take deflection into account).<br /> <br /> If you change the deflection settings for an object you have to recalculate the particle, softbody or cloth system ({{Literal|Free Cache}}), this is not done automatically. You can clear the cache for all selected objects with {{Shortcut|ctrl|B}}&amp;nbsp;→ {{Literal|Free cache selected}}.<br /> <br /> See details about rigid bodies collisions [[Doc:2.6/Manual/Physics/Rigid_Body|here]].<br /> <br /> {{RefBox<br /> |mode={{Literal|Object}} Mode<br /> |panel={{Literal|Physics}} context → {{Literal|Collision}} panel<br /> |lang=en<br /> }}<br /> <br /> ==Options==<br /> [[File:Blender3D 2.58 CollisionPanel-2.49.png|frame|right|{{Literal|Collision}} panel in the {{Literal|Physics}} context.]]<br /> <br /> ;{{Literal|Permeability}}<br /> :Fraction of particles passing through the mesh. Can be animated with {{Literal|Object}} F-curves, {{Literal|Perm}} channel.<br /> <br /> ;{{Literal|Stickiness}}<br /> :How much particles stick to the object.<br /> <br /> ;{{Literal|Kill Particles}}<br /> :Deletes Particles upon impact.<br /> <br /> ;{{Literal|Damping Factor}}<br /> :Damping during a collision (independent of the velocity of the particles).<br /> ;{{Literal|Random}} damping<br /> :Random variation of damping.<br /> <br /> ;{{Literal|Friction Factor}}<br /> :Friction during movements along the surface.<br /> ;{{Literal|Random}} friction<br /> :Random variation of friction.<br /> <br /> [[File:Blender3D VertexPlaneCollision.gif|frame|right|A softbody vertex colliding with a plane.]]<br /> <br /> ===Soft Body and Cloth Interaction===<br /> ;{{Literal|Outer}}<br /> :Size of the outer collision zone.<br /> ;{{Literal|Inner}}<br /> :Size of the inner collision zone (padding distance). '''Only effective for softbodies''', cloth only use outer collision value.<br /> <br /> Outside and inside is defined by the face normal, depicted as blue arrow in (''A softbody vertex colliding with a plane'').<br /> <br /> ;{{Literal|Damping Factor}}<br /> :Damping during a collision.<br /> <br /> ''Softbody'' collisions are difficult to get perfect. If one of the objects move too fast, the soft body will penetrate the mesh. See also the section about [[Doc:2.4/Manual/Physics/Soft Body|Soft Bodies]].<br /> {{clr}}<br /> <br /> ===Force Field Interaction===<br /> ;{{Literal|Absorption}}<br /> :A deflector can also deflect effectors. You can specify some collision/deflector objects which deflect a specific portion of the effector force using the {{Literal|Absorption}} value. 100% absorption results in no force getting through the collision/deflector object at all. If you have 3 collision object behind each other with e.g. 10%, 43% and 3%, the absorption ends up at around 50% (&lt;code&gt;100×(1-0.1)×(1-0.43)×(1-0.03)&lt;/code&gt;).<br /> {{clr}}<br /> <br /> ===Examples===<br /> [[File:UM_PART_XIII_KST_PI10.png|frame|right|Image 2: Deflected Particles.]]<br /> <br /> Here is a {{Literal|Meta}} object, dupliverted to a particle system emitting downwards, and deflected by a mesh cube:<br /> {{clr}}<br /> <br /> ===Hints===<br /> *Make sure that the normals of the mesh surface are facing towards the particles/points for correct deflection.<br /> *{{Literal|Hair}} particles react directly to force fields, so if you use a force field with a short range you don’t need necessarily collision.<br /> *{{Literal|Hair}} particles avoid their emitting mesh if you edit them in {{Literal|Particle}} mode. So you can at least model the hair with collision.<br /> {{clr}}<br /> <br /> {{Page/Footer|Doc:2.5/Manual/Physics/Force Fields|Doc:2.5/Manual/Physics/Soft Bodies}}<br /> <br /> [[Category:Physics]]</div>

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