Source canvas api helpers.nas
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#-------------------------------------------------------------------------------
# canvas API helper functions
#-------------------------------------------------------------------------------
#
var _getColor = func(color) {
if (size(color) == 1)
var color = color[0];
if (isscalar(color))
return color;
if (!isvec(color))
return debug.warn("Wrong type for color");
if (size(color) < 3 or size(color) > 4)
return debug.warn("Color needs 3 or 4 values (RGB or RGBA)");
var str = 'rgb';
if (size(color) == 4)
str ~= 'a';
str ~= '(';
# rgb = [0,255], a = [0,1]
for (var i = 0; i < size(color); i += 1) {
str ~= (i > 0 ? ',' : '') ~ (i < 3 ? int(color[i] * 255) : color[i]);
}
return str ~ ')';
};
var _arg2valarray = func {
var ret = arg;
while (isvec(ret) and size(ret) == 1 and isvec(ret[0])) {
ret = ret[0];
}
return ret;
}