-
Notifications
You must be signed in to change notification settings - Fork 0
/
exampleglapp.m
409 lines (332 loc) · 13 KB
/
exampleglapp.m
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
% vertposns: (optional) (#verts, 2 or 3) matrix
function exampleglapp(vertposns)
global GL glc glex
nl = char(10);
SHADERSRC = [ ...
'#version 120' nl ...
'uniform sampler1D cmap;' nl ...
'uniform sampler2D tex;' nl ...
'uniform float bounds[2];' nl ...
'void main(void) {' nl ...
' float gray;' nl ...
' vec3 rgb;' nl ...
' if (gl_TexCoord[0].s > 0.5 || gl_TexCoord[0].t > 0.5) {' nl ...
' gray = texture2D(tex, gl_TexCoord[0].st).r;' nl ...
' gray = (gray - bounds[0])/(bounds[1]-bounds[0]);' nl ...
' rgb = texture1D(cmap, gray).rgb;' nl ...
' gl_FragColor = vec4(rgb.r, rgb.g, rgb.b, 1.0);' nl ...
' } else {' nl ...
' rgb = texture2D(tex, gl_TexCoord[0].st).rgb;' nl ...
' gray = (rgb.r+rgb.g+rgb.b)/3.0;' nl ...
' gl_FragColor = vec4(gray, gray, gray, 1.0);' nl ...
' }' nl ...
'}' nl];
imagetex = false; % use image as texture?
GL = glconstants(); glc = glcall();
glex = struct();
glex.imagetex = imagetex;
gsp = GLCScatterPlot().setGaps([10 10]); % position will be set later
data = randn(170, 3, 2);
data(:, 3,2) = 0.4*data(:, 3,2) + 0.6*data(:,2,1).^2 - 1.5;
gsp.setData(data);
gsp.setColors(jet(size(data,1)).').setShowColors(true);
gsp.setVarNames({'VarA', 'VarB', 'Sqr_of_VarB_DS1'});
gsp.setLimits(-3:-1:-5, 3:5);
gsp.setTileDirection(true);
gsp.setAxesDataSets([1 2]);
glex.gsp = gsp;
if (imagetex)
im = uint8(100*randn(256,256,3));
% XXX: Doesn't work with octave on ubuntu 16.04 from some point on (!), giving:
%
% error: Magick++ exception: Magick: No decode delegate for this image format (/tmp/oct-yS3ZhQ) reported by magick/constitute.c:1535 (ReadImage)
% error: called from
% __imread__ at line 86 column 10
% imageIO at line 117 column 26
% (...)
% im = imread('fireworks.png');
if (mod(size(im,1),2)==1)
im(end+1, :, :) = im(end, :, :);
end
if (mod(size(im,2),2)==1)
im(:, end+1, :) = im(:, end, :);
end
glex.im = permute(im, [3 2 1]); % swap x/y, make rgb consecutive in mem
glex.imwh = [size(glex.im,2) size(glex.im,3)]; % width, height
else
im = zeros(20, 10, 'uint32');
im(2:4, 2:4) = 255*[1 1 1; 1 0 1; 1 1 1]; % a red '0'
im(17:19, 7:9) = 256*255*[0 1 0; 1 1 1; 0 1 0]; % a green '+'
glex.im = im;
glex.imwh = 16*size(im);
end
glex.adjbbox = [60 40 460 440]; % adj-mat bbox, [x1 y1 x2 y2]
glex.mxy = [0 0];
glex.bdown = [false false false]; % which button is down: left, middle, right
glex.togbtnstate = false;
glex.bdownxy = [0 0];
glex.wh = [1100 800];
glex.randdat = randn(1,30);
glex.shaderid = [];
glex.shaderuniforms = [];
glex.bounds = single([0.0 1.0]);
nlotsa = 256000;
glex.lotsofverts = single(rand(2,nlotsa))*600 + 100;
glex.lotsofverts(1, :) = glex.lotsofverts(1, :)+100;
glex.lotsofcolors = rand(3,nlotsa);
glex.lotsofidxs64 = uint8(floor(rand(1,nlotsa)*64));
if (nargin >= 1)
posmin = min(vertposns);
posmax = max(vertposns);
glex.DBG_posminmax = [posmin; posmax];
for i=1:3
vertposns(:, i) = (vertposns(:, i)-posmin(i))./(posmax(i)-posmin(i));
end
glex.posns = vertposns(:, 1:2).';
glex.zposns = vertposns(:, 3).';
else
glex.posns = rand(2, 16);
glex.zposns = zeros(1, 16);
end
t = linspace(0,2*pi, 17);
glex.circ17 = [0 cos(t(1:end))/2; 0 sin(t(1:end))/2];
% menu test
subsubmenu = struct('label','Very deep', 'cbfunc','ex_menucb3', ...
'entries',{{'Hello', 'world'}});
submenu = struct('label','SubX ------> ', ...
'entries',{{'Sub1 qweeee', subsubmenu, 'Sub2 blaaaaaarg'}});
menus = struct('cbfunc','ex_menucb', 'button',GL.BUTTON_RIGHT);
menus.entries = { 'Qwe Lupus', 'Asd Gallus', submenu, 'Gee Sus' };
% init!
winid = glcall(glc.newwindow, [20 20], glex.wh, 'GLCALL test 1', ...
struct('menus',menus));
[glex.shaderid, glex.shaderuniforms] = glcall(glc.newprogram, SHADERSRC);
% TODO: treat errors between newwindow and entermainloop properly
glex.tex = glcall(glc.texture, glex.im, struct('u32rgba',~imagetex));
glcall(glc.colormap, uint8(jet(256)' * 255));
glcall(glc.setcallback, glc.cb_reshape, 'ex_reshape');
glcall(glc.setcallback, glc.cb_display, 'ex_display');
glcall(glc.setcallback, glc.cb_keyboard, 'ex_keyboard');
glcall(glc.setcallback, glc.cb_motion, 'ex_motion');
glcall(glc.setcallback, glc.cb_mouse, 'ex_mouse');
glcall(glc.entermainloop);
end
function ex_menucb(label, idx)
% for root menu and submenu
fprintf('Clicked menu entry %s (%d).\n', label, idx);
end
function ex_menucb3(label, idx)
% for subsubmenu
fprintf('3: Clicked menu entry %s (%d).\n', label, idx);
end
function ex_reshape(w, h)
global GL glc glex
glex.wh = [w h];
glc_setup2d(w, h);
% aspect = w/h;
% if (aspect >= 1)
% glcall(glc.setmatrix, GL.PROJECTION, [-aspect aspect, -1 1, -1 1]);
% else
% glcall(glc.setmatrix, GL.PROJECTION, [-1 1, -1/aspect 1/aspect, -1 1]);
% end
end
function ex_display()
global GL glc glex
%% resize check
wh = glcall(glc.get, GL.WINDOW_SIZE);
w = wh(1);
h = wh(2);
if (w < 800 || h < 600)
% doesn't work very well
w = max(800, glex.wh(1));
h = max(600, glex.wh(2));
glcall(glc.set, GL.WINDOW_SIZE, [w h]);
end
glcall(glc.clear, 1-[0 0 0]);
% draw window corner markers
glcall(glc.draw, GL.LINE_STRIP, [1 1 10; 10 1 1], ...
struct('colors',[1 0 0])); % lower left
glcall(glc.draw, GL.LINE_STRIP, [w-10 w w; h h h-10], ...
struct('colors',[0 0 1])); % upper right
glcall(glc.text, [w h]-4, 12, '(w, h)', [1 1]);
% scissor test
glcall(glc.toggle, [GL.SCISSOR_TEST 1]);
glcall(glc.scissor, int32([64 64 128 128]));
glcall(glc.clear, [0.2 0.2 0.8]);
glcall(glc.toggle, [GL.SCISSOR_TEST 0]);
% depth test
glcall(glc.toggle, [GL.DEPTH_TEST 1, GL.POLYGON_SMOOTH 1, GL.BLEND 1]);
glcall(glc.draw, GL.TRIANGLES, [80 190 280; 100 340 230; 0.5 0.5 0.5], struct('colors',[0.9 0.5 0.5]));
glcall(glc.draw, GL.TRIANGLES, [180 220 260; 140 140 330; -0.5 -0.5 -0.5], struct('colors',[0.5 0.9 0.5]));
glcall(glc.toggle, [GL.DEPTH_TEST 0, GL.POLYGON_SMOOTH 0, GL.BLEND 0]);
numchans = 16;
%% blue rect
mxy = glex.mxy;
if (glc_pointinrect(mxy, glex.adjbbox))
xydif = glc_rectdiffs(glex.adjbbox)/numchans;
ij = min(numchans-1, floor((mxy-glex.adjbbox([1 2]))./xydif));
verts = glex.adjbbox(1:2) + xydif.*ij;
glc_drawrect(verts, verts+xydif, struct('colors',[0.4 0.4 0.8]));
end
%% grid lines
glc_draw_grid(glex.adjbbox, numchans+1);
%% image
if (glex.imagetex)
texcoords = [1 0 0 1; ...
1 1 0 0];
else
texcoords = [0 1 1 0; ...
0 0 1 1];
end
verts = [0 glex.imwh(1) glex.imwh(1) 0; ...
0 0 glex.imwh(2) glex.imwh(2)];
verts(1, :) = verts(1, :) + glex.adjbbox(1);
verts(2, :) = verts(2, :) + glex.adjbbox(4) + 40;
if (glex.togbtnstate)
glcall(glc.useprogram, glex.shaderid);
glcall(glc.setuniform, glex.shaderuniforms.bounds, glex.bounds);
end
glcall(glc.draw, GL.QUADS, verts, struct(...
'colors',[1 1 1], 'tex',glex.tex, 'texcoords',texcoords));
if (glex.togbtnstate)
glcall(glc.useprogram);
end
%% vertex points
vertposns = round(glex.posns * 256);
vertposns(1, :) = vertposns(1, :) + glex.adjbbox(3) + 80;
vertposns(2, :) = vertposns(2, :) + glex.adjbbox(2) + 30;
nslices = 17;
indices = uint32([ones(1,nslices); 1:nslices; 2:nslices+1]-1);
indices = indices(:);
%{
glcall(glc.toggle, [GL.POINT_SMOOTH 1, GL.BLEND 1]);
glcall(glc.set, GL.POINT_SIZE, 18);
glcall(glc.draw, GL.POINTS, vertposns);
glcall(glc.set, GL.POINT_SIZE, 1);
glcall(glc.toggle, [GL.POINT_SMOOTH 0, GL.BLEND 0]);
%}
%{
for i=1:size(vertposns,2)
vpos = glex.circ17 * 21;
vpos(1, :) = vpos(1, :) + vertposns(1, i);
vpos(2, :) = vpos(2, :) + vertposns(2, i);
glcall(glc.draw, GL.TRIANGLES, vpos, struct(...
'colors',[0.5 0.5 0.5] + glex.zposns(i)/2, 'indices',indices));
end
%}
glcall(glc.text, [64 460], 18, 'TicTacToe0123456789!@#$%^&*()_+', struct('colors',[0 0 1]));
for ang=0:30:180
glcall(glc.push, GL.MODELVIEW);
% glcall(glc.mulmatrix, GL.MODELVIEW, [90, 0 0 1]);
glcall(glc.mulmatrix, GL.MODELVIEW, [940 550 0]); % translate text origin (lower left) to screen coords
glcall(glc.mulmatrix, GL.MODELVIEW, [ang, 0 0 1]); % rotate wrt origin
glcall(glc.text, [20 0], 8+8*ang/180, ...
sprintf('bounds: [%.01f %.01f] ang:%d', ...
glex.bounds(1), glex.bounds(2), ang));
glcall(glc.pop, GL.MODELVIEW);
end
glc_drawbutton([80 400 120 20], 'Test Button', glex.mxy, glex.bdown(1));
glc_drawbutton([80 430 120 20], 'Toggle Btn', glex.togbtnstate, false);
%% 'axes' test
tmpxywh = [450 540 200 180];
glc_axes_setup(tmpxywh, [0 1, 0 1, -1 1]); % {{{
glcall(glc.toggle, [GL.LINE_SMOOTH 1, GL.BLEND 1]);
glcall(glc.clear, [0.8 0.8 0.4]);
glcall(glc.draw, GL.LINE_STRIP, [linspace(0,1,32); [0.5, 0.5+glex.randdat/5, 0.5]]);
glex.randdat = [glex.randdat(2:30) randn(1)];
glc_axes_finish([0 0 0]); % }}}
ocz_xy = tmpxywh(1:2)+[2 tmpxywh(4)-16];
tmpargs = { ocz_xy, 14, 'noise', struct('xgap',1) };
len = glcall(glc.text, tmpargs{:}); % get length of text
glc_drawrect(ocz_xy+[-1 -2], ocz_xy+[len+2 14+2], struct('colors',[.6 .6 .6]));
glcall(glc.text, tmpargs{:}) % draw text
glcall(glc.text, ocz_xy-[0 16], 14, 'A monospaced text', ...
struct('mono',true, 'xgap',0));
%% Tick marks test
tmpxywh(1:2) = tmpxywh(1:2) + [0 -10];
xyxy = [tmpxywh(1:2) tmpxywh(1:2)+[tmpxywh(3) 0]];
xticklims = [-5, 5];
xtickvals = -5 + 10*rand(1, 4);
glc_drawticks(xyxy, xticklims, xtickvals, 6, 8);
tmpxywh(1:2) = tmpxywh(1:2) + [-10 10];
xyxy = [tmpxywh(1:2) tmpxywh(1:2)+[0 tmpxywh(4)]];
yticklims = [-5, 5];
ytickvals = -5 + 10*rand(1, 4);
glc_drawticks(xyxy, yticklims, ytickvals, -6, 8);
%% Multi-scatter plot
posext = [1 1, 0.6 0.6] .* (tmpxywh + [100 -100, 0 0]);
glcall(glc.set, GL.POINT_SIZE, 18);
glcall(glc.draw, GL.POINTS, posext(1:2).');
glcall(glc.set, GL.POINT_SIZE, 1);
glex.gsp.setPosExt(posext);
glex.gsp.draw();
%{
tmpxywh(1:2) = tmpxywh(1:2) + [10 0]; % reset the previous two tweaks
tmpxywh(1) = tmpxywh(1) + 240;
glc_drawscatter(tmpxywh, [xticklims, yticklims], [xtickvals; ytickvals], 4, ...
struct('colors', [0.5 0.5 0.5, 1, true]));
%}
% torture test 1
% glcall(glc.draw, GL.LINES, glex.lotsofverts, struct('colors', glex.lotsofcolors));
% torture test 2
% glcall(glc.draw, GL.LINES, glex.lotsofverts(:, 1:64), ...
% struct('colors', glex.lotsofcolors(:, 1:64), 'indices',glex.lotsofidxs64));
end
function ex_keyboard(key, x, y, mods)
global GL glc glex
if (key=='q')
glcall(glc.leavemainloop);
return
end
dir = 0;
idx = 2;
if (key==GL.KEY_UP)
dir = 1;
elseif (key==GL.KEY_DOWN)
dir = -1;
end
if (bitand(mods, GL.MOD_CTRL))
idx = 1;
end
if (dir)
obounds = glex.bounds;
glex.bounds(idx) = glex.bounds(idx) + dir/10;
if (glex.bounds(2) < glex.bounds(1))
glex.bounds = obounds;
else
glex.bounds(1) = max(0, glex.bounds(1));
glex.bounds(2) = min(1, glex.bounds(2));
end
end
glcall(glc.redisplay);
end
function ex_motion(buttonsdown, x, y)
global glc glex
if (buttonsdown)
% texture reuploading
if (glex.imagetex)
ov = (glex.im==245);
glex.im = glex.im+1;
glex.im(ov) = 0;
else
ov = (glex.im >= 1 & glex.im <= 255);
glex.im(ov) = glex.im(ov)+1;
glex.im(glex.im == 256) = 128;
end
glcall(glc.texture, glex.im, glex.tex, struct('u32rgba',~glex.imagetex));
else
glex.mxy = [x y];
glex.mxy(2) = glex.wh(2)-glex.mxy(2);
end
glcall(glc.redisplay);
end
function ex_mouse(button, downp, x, y, mods)
global GL glex
ex_motion(0, x, y);
glex.bdown(log2(button)+1) = downp;
glex.bdownxy(1:2) = glex.mxy;
if (button==GL.BUTTON_LEFT && downp)
glc_callbutton([80 400 120 20], glex.mxy, 'glc_listdlg(''ListString'', {''qwe'',''asd'',''QWEQWE'',''ASDASD''}, ''Name'',''SDFG'');');
glc_callbutton([80 430 120 20], glex.mxy, 'global glex; glex.togbtnstate=~glex.togbtnstate;');
end
end