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EPhysics: use vertex reduction utility 

Convex meshes often have too many vertices.
This slows down collision detection a lot, and there is no benefit in the
unnecessary details.



SVN revision: 75571
This commit is contained in:
Bruno Dilly 2012-08-22 20:05:19 +00:00
parent e2534363a6
commit 3627234fb8
1 changed files with 15 additions and 6 deletions
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21
legacy/ephysics/src/lib/ephysics_body.cpp
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@ -3,6 +3,7 @@
#endif
#include <Evas.h>
#include <BulletCollision/CollisionShapes/btShapeHull.h>
#include <math.h>
@ -888,10 +889,12 @@ ephysics_body_box_add(EPhysics_World *world)
EAPI EPhysics_Body *
ephysics_body_shape_add(EPhysics_World *world, EPhysics_Shape *shape)
{
btConvexHullShape* collision_shape;
btConvexHullShape *full_shape, *simplified_shape;
const Eina_Inlist *points;
EPhysics_Point *point;
btShapeHull *hull;
btVector3 point3d;
btScalar margin;
if (!world)
{
@ -905,8 +908,8 @@ ephysics_body_shape_add(EPhysics_World *world, EPhysics_Shape *shape)
return NULL;
}
collision_shape = new btConvexHullShape();
if (!collision_shape)
full_shape = new btConvexHullShape();
if (!full_shape)
{
ERR("Couldn't create a generic convex shape.");
return NULL;
@ -917,12 +920,18 @@ ephysics_body_shape_add(EPhysics_World *world, EPhysics_Shape *shape)
EINA_INLIST_FOREACH(points, point)
{
point3d = btVector3(point->x, point->y, 0);
collision_shape->addPoint(point3d);
full_shape->addPoint(point3d);
point3d = btVector3(point->x, point->y, 0.5);
collision_shape->addPoint(point3d);
full_shape->addPoint(point3d);
}
return _ephysics_body_add(world, (btCollisionShape *)collision_shape,
hull = new btShapeHull(full_shape);
margin = full_shape->getMargin();
hull->buildHull(margin);
simplified_shape = new btConvexHullShape(&(hull->getVertexPointer()->getX()),
hull->numVertices());
return _ephysics_body_add(world, (btCollisionShape *)simplified_shape,
"generic");
}