Function
Gimpvector_3d_to_2d
Declaration [src]
void
gimp_vector_3d_to_2d (
gint sx,
gint sy,
gint w,
gint h,
gdouble* x,
gdouble* y,
const GimpVector3* vp,
const GimpVector3* p
)
Description [src]
Convert the given 3D point to 2D (project it onto the viewing plane, (sx, sy, 0) - (sx + w, sy + h, 0). The input is assumed to be in the unit square (0, 0, z) - (1, 1, z). The viewpoint of the observer is passed in vp.
This is basically the opposite of gimp_vector_2d_to_3d().
Parameters
sx-
Type:
gintThe abscissa of the upper-left screen rectangle.
sy-
Type:
gintThe ordinate of the upper-left screen rectangle.
w-
Type:
gintThe width of the screen rectangle.
h-
Type:
gintThe height of the screen rectangle.
x-
Type:
gdouble*The abscissa of the point in the screen rectangle to map (return value).
The data is owned by the caller of the function. y-
Type:
gdouble*The ordinate of the point in the screen rectangle to map (return value).
The data is owned by the caller of the function. vp-
Type:
GimpVector3Position of the observer.
The data is owned by the caller of the function. p-
Type:
GimpVector3The 3D point to project to the plane.
The data is owned by the caller of the function.