static PyObject *
vs_interpolate(PyGimpVectorsStroke *self, PyObject *args, PyObject *kwargs)
{
double precision;
double *coords;
int i, num_coords;
gboolean closed;
PyObject *ret, *ret_coords;
static char *kwlist[] = { "precision", NULL };
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "d:interpolate", kwlist,
&precision))
return NULL;
coords = gimp_vectors_stroke_interpolate(self->vectors_ID, self->stroke,
precision, &num_coords, &closed);
ret = PyTuple_New(2);
if (ret == NULL)
return NULL;
ret_coords = PyList_New(num_coords);
if (ret_coords == NULL) {
Py_DECREF(ret);
return NULL;
}
for (i = 0; i < num_coords; i++)
PyList_SetItem(ret_coords, i, PyFloat_FromDouble(coords[i]));
PyTuple_SetItem(ret, 0, ret_coords);
PyTuple_SetItem(ret, 1, PyBool_FromLong(closed));
return ret;
}
void fill_stop_path_buffer_from_path(gint32 path_id) {
int i,j,num_strokes;
gint stroke_id;
#ifdef DEBUG
g_warning("fill_stop_path_buffer_from_path with path_id = %d, previewWidth = %d, height = %d",path_id,
interface_vals.previewWidth,interface_vals.previewHeight );
#endif
for (i = 0; i < interface_vals.previewWidth * interface_vals.previewHeight; i++)
interface_vals.previewStopPath[i] = 0;
#ifdef DEBUG
g_warning("fill_stop_path_buffer_from_path init finish",path_id);
#endif
if (path_id <= 0) return;
if (!gimp_vectors_is_valid(path_id)) {
g_error("selected path is not valid!");
}
stroke_id = gimp_vectors_get_strokes(path_id,&num_strokes)[0];
#ifdef DEBUG
g_warning("vectors has %d strokes, using stroke_id = %d",stroke_id);
#endif
if (num_strokes > 0) {
gboolean closed;
gdouble *coords;
gint num_coords;
#ifdef DEBUG
g_warning("going to interpolate");
#endif
coords = gimp_vectors_stroke_interpolate(path_id,stroke_id,1.0,&num_coords,&closed);
#ifdef DEBUG
g_warning("got %d interpolation points",num_coords/2);
#endif
if (coords) {
gint oldx,oldy;
for (i = 0; i < num_coords; i+=2) {
gint x = coords[i] - interface_vals.selectionX0;
gint y = coords[i+1] - interface_vals.selectionY0;
#ifdef DEBUG
g_warning("%d: putting in point x,y = %d,%d",i/2,x,y);
#endif
if (x >= 0 && y >= 0 && x < interface_vals.previewWidth && y < interface_vals.previewHeight) {
interface_vals.previewStopPath[y * interface_vals.previewWidth + x] = 1;
if (i>0) {
gdouble len = sqrt((gdouble)(x-oldx)*(x-oldx) + (gdouble)(y-oldy)*(y-oldy));
if (len > 1) {
gdouble xcoeff = (gdouble)(x-oldx) / len;
gdouble ycoeff = (gdouble)(y-oldy) / len;
for (j = 0; j < floor(len); ++j) {
gint xtmp = ROUND(oldx + xcoeff*j);
gint ytmp = ROUND(oldy + ycoeff*j);
interface_vals.previewStopPath[ytmp * interface_vals.previewWidth + xtmp] = 1;
}
}
}
}
oldx = x;
oldy = y;
}
g_free(coords);
}
}
#ifdef DEBUG
g_warning("fill_stop_path_buffer_from_path finished");
#endif
}
