| instroke |
(Point p) |
typedict.Path |
| instroke |
(Number x, Number y) |
|
| |
Returns non-zero if
p
or the point
(x, y)
would be painted if this path were stroked using
CTM,
linecap,
linejoin,
linewidth,
and
miterlimit
that are defined in this path.
The default values assigned to these fields in a
Path
match the defaults assigned to the same fields in a
Graphics.
| |
| Example: |
The program,
import yoix.*.*;
JFrame frame = {
Graphics graphics = {
double linewidth = 20.0;
int linecap = CAP_ROUND;
};
paint() {
graphics {
if (currentpoint() == NULL) {
translate(72, 144);
rotate(-45);
scale(.5, .5);
shear(0, .5);
arc(144, 144, 144, 0, 180);
}
gsave();
stroke();
grestore();
}
}
mousePressed(MouseEvent e) {
graphics.path.linewidth = graphics.linewidth;
graphics.path.linecap = graphics.linecap;
graphics.path.linejoin = graphics.linejoin;
graphics.path.miterlimit = graphics.miterlimit;
printf("hit=%d\n", graphics.path.instroke(e.coordinates));
}
};
frame.visible = TRUE;
defines a paint function in a frame that strokes an arc in a
transformed coordinate system and then uses the
instroke
built-in defined in
graphics.path
to decide if a button was pressed when the cursor was inside the stroked path.
Obviously
mousePressed
would have been simpler if we used the
instroke
built-in defined in
frame.graphics,
but in this case we wanted to illustrate the
instroke
built-in defined in a
Path.
Notice that we used
e.coordinates
rather than
e.location
in the event handler.
Both values are defined and can be identical, but
e.location
always represents the location of the event in the Yoix default
coordinate system, while
e.coordinates
are the user space coordinates of the event in the frame,
which depend on the values stored in
CTM
when the event arrives.
| | |
| Return: |
int
| | |
| See Also: |
eointersects,
ineofill,
infill,
intersects
|
|
Yoix is a registered trademark of AT&T Inc.
|
