| concatmatrix |
(Matrix mtx) |
typedict.Matrix |
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Multiplies this matrix and
mtx
and returns the result, which is not quite the same as
concat
because
concatmatrix
makes no changes to this matrix.
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| Example: |
The program,
import yoix.*.*;
Matrix digitmatrix;
Matrix hourmatrix;
hourmatrix.rotate(360/12);
digitmatrix.translate(72, 0).rotate(90);
JFrame f = {
Color background = Color.black;
Graphics graphics = {
String font = "Lucida-bold-16";
};
paint(Rectangle rect) {
Matrix mtx;
String digit;
int n;
graphics {
gsave();
rectclip(rect);
setrgbcolor(0, 1, 0);
translate(size.width - 144, size.height - 144);
rotate(-60);
mtx = currentmatrix();
for (n = 1; n <= 12; n++) {
digit = toString(n);
concat(digitmatrix);
moveto(-stringwidth(digit)/2, 0);
show(digit);
mtx = mtx.concatmatrix(hourmatrix);
setmatrix(mtx);
}
grestore();
}
}
};
f.visible = TRUE;
defines a paint function in a frame that draws part of a clock face
near the lower right corner of the frame.
We used
concatmatrix
in one place, despite the fact that
concat
would have been better.
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| Return: |
Matrix
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| See Also: |
concat,
currentmatrix,
dividematrix,
dtransform,
Graphics,
identmatrix,
idtransform,
initmatrix,
invertmatrix,
itransform,
maptopixel,
rotate,
scale,
setmatrix,
shear,
transform,
translate
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Yoix is a registered trademark of AT&T Inc.
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