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Fix problems with transformation matrices that include numbers very close to zero (as in issue #222)

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Evan Czaplicki 2013-08-25 01:03:59 -07:00
parent 40ea6df24b
commit 089ae13ae6
1 changed files with 8 additions and 3 deletions
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11
runtime/Render/Collage.js
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@ -167,6 +167,11 @@ function formToMatrix(form) {
return matrix;
}
function str(n) {
if (n < 0.00001 && n > -0.00001) return 0;
return n;
}
function makeTransform(w, h, form, matrices) {
var props = form.form._0.props;
var m = A6( Transform.matrix, 1, 0, 0, 1,
@ -176,9 +181,9 @@ function makeTransform(w, h, form, matrices) {
for (var i = 0; i < len; ++i) { m = A2( Transform.multiply, m, matrices[i] ); }
m = A2( Transform.multiply, m, formToMatrix(form) );
return 'matrix(' + m[0] + ',' + m[3] + ',' +
(-m[1]) + ',' + (-m[4]) + ',' +
m[2] + ',' + m[5] + ')';
return 'matrix(' + str( m[0]) + ',' + str( m[3]) + ',' +
str(-m[1]) + ',' + str(-m[4]) + ',' +
str( m[2]) + ',' + str( m[5]) + ')';
}
function stepperHelp(list) {