## homothécie

Like all linear transformations that command is in 2 modes:
direct and matrix.

## hom obj

### hom(c) obj(id)

Dilates by **c** object **id** with respect to its center of gravity.

**Options**:

**poi(x,y,z)(id)**: dilates object **id** with respect to point **(x,y,z)**.

**vertex(s)(id)**: dilates vertices numbered **s** of object **id**.

**Note**: **obj** is fog, light, var, vol, view?

**Examples:**

1) dila(1,1.5,2) vertex[1,5] vol(1,3): Dilates by (1,2,3) vertices (1,2,3,4,5) of
volumes 1 and 3 with respect to their center of gravity.

2) dila(1,1.5,2) var("x"): Dilates variable **x** by (1,1.5,2) with respect to its center of gravity.
## hom matrix

### hom matrix vol(id)

Returns matrix dilation coefficients of volume **id**.
### hom(c)matrix vol(id)

Dilates volume **id** par modifying its matrix.

**Options:**

**ini**: treats the base transformation.