| rectIntersectsRect |
(Rectangle rect1, Rectangle rect2) |
yoix.graphics |
| rectIntersectsRect |
(Rectangle rect1, Number x, Number y, Number width, Number height) |
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Returns
1
if rectangle
rect1
intersects rectangle
rect2
and
0
if it doesn't.
The second rectangle can also be supplied by giving its
width,
height,
and coordinates of its upper left corner
(x,y).
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| Example: |
The program,
import yoix.*.*;
JFrame frame = {
GridBagLayout layoutmanager;
Array layout = {
new JCanvas {
String tag = "$_canvas";
Rectangle rect1;
Rectangle rect2;
paint() {
rect1.x = 36;
rect1.y = 36;
rect1.width = 3.0*72.0;
rect1.height = 0.5*71.0;
rect2.x = root.size.width - 5.0*72.0;
rect2.y = root.size.height - 3.0*72.0;
rect2.width = 4.0*72.0;
rect2.height = 1.0*72.0;
graphics {
gsave();
setrgbcolor(Color.red);
rectfill(rect1);
setrgbcolor(Color.blue);
rectfill(rect2);
grestore();
}
}
},
BOTH, REMAINDER,
new JButton {
String text = "Rectangles Intersect?";
actionPerformed(e) {
Rectangle rect;
int intersects;
intersects = rectIntersectsRect(
root.components.$_canvas.rect1,
root.components.$_canvas.rect2
);
if (intersects)
printf("The rectangles intersect\n");
else printf("The rectangles do not intersect\n");
}
},
NONE, REMAINDER,
72.0/16,
};
};
frame.visible = TRUE;
draws two rectangles in a canvas and includes a button at the bottom of
the frame that tells you if the rectangles intersect or not when it's
pressed.
The rectangles are drawn at fixed positions relative to the upper left
and lower right corners of the frame, so you can make them intersect
by resizing the frame.
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| See Also: |
clearRect,
copyArea,
drawArc,
drawImage,
drawLine,
drawOval,
drawPolygon,
drawPolyline,
drawRect,
drawRoundRect,
drawString,
fillArc,
fillOval,
fillPolygon,
fillRect,
fillRoundRect,
pointInPolygon,
pointInRect,
rectContainsRect,
rectIntersectionRect,
rectUnionRect,
stringBounds,
stringWidth
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Yoix is a registered trademark of AT&T Inc.
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