vec_for_mesh

vec_for_mesh (VECTOR, ENTITY, var number)

vec_to_mesh (VECTOR, ENTITY, var number)

Performs realtime mesh deformation of a model or terrain entity. vec_for_mesh sets the VECTOR to the mesh coordinates of the given vertex number; vec_to_mesh sets the vertex to a new mesh position given by the VECTOR.

Parameters:

VECTOR*	xyz mesh coordinate.
ENTITY*	Entity pointer.
number	Number of the mesh vertex in the MED status line.

Modifies:

VECTOR* - set to the vertex coordinate by vec_for_mesh.

Speed:

Medium

Remarks:

These functions don't support map entities, sprites, or chunked terrain, and are replaced by ent_getvertex/ent_setvertex that should be used for new projects.
Modifying a mesh of a certain entity affects all entities that use the same mesh.
After deforming a mesh, ent_fixnormals() might be necessary to adapt the shading, and c_updatehull() might be necessary to adapt the collision hull to the new mesh.
The mesh coordinates of the current frame are used. Unlike world coordinates returned by vec_for_vertex(), mesh coordinates are relative to the model's origin without rotation or frame interpolation.
When deforming terrain, only the height (z coordinate) of a mesh vertex can be changed. Terrain must be non-chunked.
Mesh deformation is not automatically saved by game_save(). If this is desired, store the mesh coordinates in an array.

Example (lite-C):

function dent(ENTITY* ent,var num) // make a "dent" into a mesh
{
	vec_for_mesh(temp,ent,num);
 	vec_scale(temp,0.9); // move the vertex inwards by 10%
 	vec_to_mesh(temp,ent,num);
  you = ent;
  ent_fixnormals(you,your.frame)
}

See also:

ent_vertices, ent_fixnormals, vec_for_vertex, vec_for_normal, vec_for_uv, vec_for_min, vec_for_max

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