Function
Gimpvector_2d_to_3d
Declaration [src]
void
gimp_vector_2d_to_3d (
gint sx,
gint sy,
gint w,
gint h,
gint x,
gint y,
const GimpVector3* vp,
GimpVector3* p
)
Description [src]
"Compute screen (sx, sy) - (sx + w, sy + h) to 3D unit square mapping. The plane to map to is given in the z field of p. The observer is located at position vp (vp->z != 0.0)."
In other words, this computes the projection of the point (x
, y
)
to the plane z = p
->z (parallel to XY), from the vp
point of view
through the screen (sx
, sy
)->(sx
+ w
, sy
+ h
)
Parameters
sx |
gint |
The abscissa of the upper-left screen rectangle. |
|
sy |
gint |
The ordinate of the upper-left screen rectangle. |
|
w |
gint |
The width of the screen rectangle. |
|
h |
gint |
The height of the screen rectangle. |
|
x |
gint |
The abscissa of the point in the screen rectangle to map. |
|
y |
gint |
The ordinate of the point in the screen rectangle to map. |
|
vp |
GimpVector3 |
The position of the observer. |
|
The data is owned by the caller of the function. | |
p |
GimpVector3 |
The resulting point. |
|
The data is owned by the caller of the function. |