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91 lines
2.7 KiB
JavaScript
91 lines
2.7 KiB
JavaScript
/* FreeJ example scripts
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* (c) Copyright 2008 Christoph Rudorff aka MrGoil <goil@dyne.org>
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*
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* This source code is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Public License as published
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* by the Free Software Foundation; either version 3 of the License,
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* or (at your option) any later version.
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*
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* This source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* Please refer to the GNU Public License for more details.
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*
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* You should have received a copy of the GNU Public License along with
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* this source code; if not, write to:
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* Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* a nice helper to set script values with controler values
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automagicly check ranges and sets values by name in the caller context
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*/
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function Param(obj, name, in_min, in_max, out_min, out_max, out_start_value) {
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if (arguments.length != 7)
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throw "Wrong no of Args.";
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if ( (out_max-out_min == 0) || (in_max-in_min == 0))
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throw "Argument value error";
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this.frac = 0; // default output Integer
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this.obj = obj;
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this.name = name;
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this.in_min = in_min;
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this.in_max = in_max;
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this.out_min = out_min;
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this.out_max = out_max;
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this.out_value = Math.round(out_start_value);
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obj[name] = out_start_value;
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this.mult = (out_max-out_min)/(in_max-in_min);
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this.in_value = Math.int((this.out_value -this.out_min)/this.mult + this.in_min);
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}
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Param.prototype.setValue = function(in_value) {
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in_value = this.range(Math.int(in_value));
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var out_value = (this.mult*(in_value-this.in_min) + this.out_min).round(this.frac);
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this.obj[this.name] = out_value;
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this.in_value = in_value;
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this.out_value= out_value;
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// echo(this.name + "in: " + in_value + " out: " + this.out_value);
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}
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Param.prototype.step = function(n) {
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// if this.mult<1 ...
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var in_value = this.range(this.in_value + n);
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this.setValue(in_value);
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}
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Param.prototype.range = function(v) {
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return Math.min(this.in_max, Math.max(this.in_min, v));
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}
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Param.prototype.print = function(textlayer) {
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if (textlayer instanceof TextLayer) {
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var msg = this.name + ": " + this.out_value;
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textlayer.print(msg);
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} else {
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throw("I want a TextLayer!");
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}
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}
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// goodies ... return js_int(!)
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Math.int = function(i) {
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if (i>0)
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return this.floor(i)
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else
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return this.ceil(i)
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}
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Number.prototype.int = function() {
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return Math.int(this);
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}
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Number.prototype.round = function(d) {
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if (d == 0)
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return Math.round(this);
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d = Math.pow(10,d);
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return Math.round(this*d)/d;
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}
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echo("param included");
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