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comparison nodejs/mbapp.js @ 854:eff2f580b536 abs_n_rel_center

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Use accessor to return bbox values
author Thinker K.F. Li <thinker@codemud.net>
date Mon, 20 Sep 2010 22:43:43 +0800
parents 13e0953c3fb3
children 881efcd8a18f
comparison
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853:13e0953c3fb3 854:eff2f580b536
3 var mbfly = require("mbfly"); 3 var mbfly = require("mbfly");
4 var svg = require("./svg"); 4 var svg = require("./svg");
5 var sys = require("sys"); 5 var sys = require("sys");
6 var ldr = mbfly.img_ldr_new("."); 6 var ldr = mbfly.img_ldr_new(".");
7 7
8 function _reverse(m1) {
9 var rev = new Array(1, 0, 0, 0, 1, 0);
10 var m = new Array(m1[0], m1[1], m1[2], m1[3], m1[4], m1[5]);
11
12 rev[3] = -m[3] / m[0];
13 m[3] = 0;
14 m[4] += rev[3] * m[1];
15 m[5] += rev[3] * m[2];
16
17 rev[1] = -m[1] / m[4];
18 rev[0] += rev[1] * rev[3];
19 m[1] = 0;
20 m[2] += rev[1] * m[5];
21
22 rev[2] = -m[2];
23 rev[5] = -m[5];
24
25 rev[0] = rev[0] / m[0];
26 rev[1] = rev[1] / m[0];
27 rev[2] = rev[2] / m[0];
28
29 rev[3] = rev[3] / m[4];
30 rev[4] = rev[4] / m[4];
31 rev[5] = rev[5] / m[4];
32
33 return rev;
34 }
35
8 function _decorate_mb_rt(mb_rt) { 36 function _decorate_mb_rt(mb_rt) {
37 var coord;
38
9 mb_rt._mbapp_saved_coord_new = mb_rt.coord_new; 39 mb_rt._mbapp_saved_coord_new = mb_rt.coord_new;
10 mb_rt.coord_new = function(parent) { 40 mb_rt.coord_new = function(parent) {
11 var coord; 41 var coord;
12 42
13 coord = this._mbapp_saved_coord_new(parent); 43 coord = this._mbapp_saved_coord_new(parent);
44 coord.type = "coord";
14 coord._mbapp_saved_mtx = [coord[0], coord[1], coord[2], 45 coord._mbapp_saved_mtx = [coord[0], coord[1], coord[2],
15 coord[3], coord[4], coord[5]]; 46 coord[3], coord[4], coord[5]];
47 coord._mbapp_saved_rev_mtx = _reverse(coord._mbapp_saved_mtx);
48 coord.parent = parent;
49 coord._mbapp_saved_add_shape = coord.add_shape;
50 coord.add_shape = function(shape) {
51 var coord;
52
53 this._mbapp_saved_add_shape(shape);
54 shape.parent = this;
55 }
56
16 return coord; 57 return coord;
17 }; 58 };
59
60 /*
61 * Decorate root coord
62 */
63 coord = mb_rt.root;
64 coord.type = "coord";
65 coord._mbapp_saved_mtx = [coord[0], coord[1], coord[2],
66 coord[3], coord[4], coord[5]];
67 coord._mbapp_saved_rev_mtx = _reverse(coord._mbapp_saved_mtx);
68 coord._mbapp_saved_add_shape = coord.add_shape;
69 coord.add_shape = function(shape) {
70 var coord;
71
72 this._mbapp_saved_add_shape(shape);
73 shape.parent = this;
74 }
18 } 75 }
19 76
20 app=function(display, w, h) { 77 app=function(display, w, h) {
21 var self = this; 78 var self = this;
22 var mb_rt; 79 var mb_rt;