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multi_predict.js
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multi_predict.js
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// Copyright 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.
/**
* Author: David Ha <[email protected]>
*
* @fileoverview Basic p5.js sketch to show how to use sketch-rnn
* to predict 9 different possible endings for an incomplete sketch.
*/
var sketch = function( p ) {
"use strict";
var small_class_list = ['bird',
'ant',
'antyoga',
'alarm_clock',
'ambulance',
'angel',
'backpack',
'barn',
'basket',
'bear',
'bee',
'beeflower',
'bicycle',
'book',
'brain',
'bridge',
'bulldozer',
'bus',
'butterfly',
'cactus',
'calendar',
'castle',
'cat',
'catbus',
'catpig',
'chair',
'couch',
'crab',
'crabchair',
'crabrabbitfacepig',
'cruise_ship',
'diving_board',
'dog',
'dogbunny',
'dolphin',
'duck',
'elephant',
'elephantpig',
'eye',
'face',
'fan',
'fire_hydrant',
'firetruck',
'flamingo',
'flower',
'floweryoga',
'frog',
'frogsofa',
'garden',
'hand',
'hedgeberry',
'hedgehog',
'helicopter',
'kangaroo',
'key',
'lantern',
'lighthouse',
'lion',
'lionsheep',
'lobster',
'map',
'mermaid',
'monapassport',
'monkey',
'mosquito',
'octopus',
'owl',
'paintbrush',
'palm_tree',
'parrot',
'passport',
'peas',
'penguin',
'pig',
'pigsheep',
'pineapple',
'pool',
'postcard',
'power_outlet',
'rabbit',
'rabbitturtle',
'radio',
'radioface',
'rain',
'rhinoceros',
'rifle',
'roller_coaster',
'sandwich',
'scorpion',
'sea_turtle',
'sheep',
'skull',
'snail',
'snowflake',
'speedboat',
'spider',
'squirrel',
'steak',
'stove',
'strawberry',
'swan',
'swing_set',
'the_mona_lisa',
'tiger',
'toothbrush',
'toothpaste',
'tractor',
'trombone',
'truck',
'whale',
'windmill',
'yoga',
'yogabicycle'];
var large_class_list = ['bird',
'ant',
'ambulance',
'angel',
'alarm_clock',
'antyoga',
'backpack',
'barn',
'basket',
'bear',
'bee',
'beeflower',
'bicycle',
'bird',
'book',
'brain',
'bridge',
'bulldozer',
'bus',
'butterfly',
'cactus',
'calendar',
'castle',
'cat',
'catbus',
'catpig',
'chair',
'couch',
'crab',
'crabchair',
'crabrabbitfacepig',
'cruise_ship',
'diving_board',
'dog',
'dogbunny',
'dolphin',
'duck',
'elephant',
'elephantpig',
'everything',
'eye',
'face',
'fan',
'fire_hydrant',
'firetruck',
'flamingo',
'flower',
'floweryoga',
'frog',
'frogsofa',
'garden',
'hand',
'hedgeberry',
'hedgehog',
'helicopter',
'kangaroo',
'key',
'lantern',
'lighthouse',
'lion',
'lionsheep',
'lobster',
'map',
'mermaid',
'monapassport',
'monkey',
'mosquito',
'octopus',
'owl',
'paintbrush',
'palm_tree',
'parrot',
'passport',
'peas',
'penguin',
'pig',
'pigsheep',
'pineapple',
'pool',
'postcard',
'power_outlet',
'rabbit',
'rabbitturtle',
'radio',
'radioface',
'rain',
'rhinoceros',
'rifle',
'roller_coaster',
'sandwich',
'scorpion',
'sea_turtle',
'sheep',
'skull',
'snail',
'snowflake',
'speedboat',
'spider',
'squirrel',
'steak',
'stove',
'strawberry',
'swan',
'swing_set',
'the_mona_lisa',
'tiger',
'toothbrush',
'toothpaste',
'tractor',
'trombone',
'truck',
'whale',
'windmill',
'yoga',
'yogabicycle'];
var use_large_models = true;
var class_list = small_class_list;
if (use_large_models) {
class_list = large_class_list;
}
var screen_width, screen_height;
var origin_x, origin_y;
var insize, outsize;
var Nsize = 3; // output will be a matrix of Nsize x Nsize;
var line_width = 1.0;
var min_sequence_length = 5;
// input variables:
var dx, dy; // offsets of the pen strokes, in pixels
var pen = 0;
var prev_pen = 1;
var x, y; // absolute coordinates on the screen of where the pen is
var start_x, start_y;
var has_started = false; // set to true after user starts writing.
var just_finished_line = false;
var epsilon = 2; // to ignore data from user's pen staying in one spot.
var screen_width, screen_height; // stores the browser's dimensions
var raw_lines;
var current_raw_line;
var current_raw_line_simple;
var strokes, raw_strokes;
var stroke, raw_stroke;
var last_point, idx;
var line_color, raw_line_color, predict_line_color;
// model related
var model, model_data;
var temperature = 0.25;
var screen_scale_factor = 3.0;
var async_draw = true;
/*
if (use_large_models) {
async_draw = false;
}
*/
// individual models (2d arrays)
var model_state;
var model_x, model_y;
var model_dx, model_dy;
var model_is_active;
var model_steps;
var model_prev_pen;
// dom
var canvas;
var reset_button;
var model_sel; // , vae_sel
var temperature_slider;
var text_instruction;
var text_temperature;
var random_model_button;
var predict_button;
var text_title;
var title_text = "sketch-rnn predictor.";
var print = function(x) {
console.log(x);
};
var set_title_text = function(new_text) {
title_text = new_text.split('_').join(' ');
text_title.html(title_text);
}
var Create2DArray = function(rows, cols) {
var arr = [];
for (var i=0;i<rows;i++) {
arr[i] = new Array(cols);
}
return arr;
}
var draw_example = function(example, start_x, start_y, line_color, line_thickness) {
var i;
var x=start_x, y=start_y;
var x, y;
var pen_down, pen_up, pen_end;
var prev_pen = [0, 0, 0];
var the_line_thickness = 1.0;
if (typeof line_thickness === "number") {
the_line_thickness = line_thickness;
}
for(i=0;i<example.length;i++) {
// sample the next pen's states from our probability distribution
[dx, dy, pen_down, pen_up, pen_end] = example[i];
if (prev_pen[2] == 1) { // end of drawing.
break;
}
// only draw on the paper if the pen is touching the paper
if (prev_pen[0] == 1) {
p.stroke(line_color);
p.strokeWeight(the_line_thickness);
p.line(x, y, (x+dx), (y+dy)); // draw line connecting prev point to current point.
}
// update the absolute coordinates from the offsets
x += dx;
y += dy;
// update the previous pen's state to the current one we just sampled
prev_pen = [pen_down, pen_up, pen_end];
}
};
var init = function() {
var i, j;
origin_x = Create2DArray(Nsize, Nsize);
origin_y = Create2DArray(Nsize, Nsize);
screen_width = Math.max(window.innerWidth, 480);
screen_height = Math.max(window.innerHeight, 320);
insize = screen_width/2;
outsize = screen_width/(2*Nsize);
ModelImporter.set_init_model(model_raw_data);
if (use_large_models) {
ModelImporter.set_model_url("https://storage.googleapis.com/quickdraw-models/sketchRNN/large_models/");
}
model_data = ModelImporter.get_model_data();
model = new SketchRNN(model_data);
model.set_pixel_factor(screen_scale_factor);
canvas = p.createCanvas(screen_width, screen_height);
canvas.position(0, 0);
p.frameRate(60);
p.background(255, 255, 255, 255);
// individual models:
model_state = Create2DArray(Nsize, Nsize);
model_x = Create2DArray(Nsize, Nsize);
model_y = Create2DArray(Nsize, Nsize);
model_dx = Create2DArray(Nsize, Nsize);
model_dy = Create2DArray(Nsize, Nsize);
model_is_active = Create2DArray(Nsize, Nsize);
model_steps = Create2DArray(Nsize, Nsize);
model_prev_pen = Create2DArray(Nsize, Nsize);
// dom
reset_button = p.createButton('start over');
reset_button.position(5, insize-25);
reset_button.mousePressed(reset_button_event); // attach button listener
// data selection
model_sel = p.createSelect();
for (i=0;i<class_list.length;i++) {
model_sel.option(class_list[i]);
}
model_sel.position(95, insize-25);
model_sel.changed(model_sel_event);
// random model buttom
random_model_button = p.createButton('random');
random_model_button.position(226, insize-25);
random_model_button.mousePressed(random_model_button_event); // attach button listener
// predict button
predict_button = p.createButton('predict');
predict_button.position(290, insize-25);
predict_button.mousePressed(predict_button_event); // attach button listener
// temperature
temperature_slider = p.createSlider(1, 100, temperature*100);
temperature_slider.position(insize+5, insize+0);
temperature_slider.style('width', screen_width/2-10+'px');
temperature_slider.changed(temperature_slider_event);
// text descriptions
text_instruction = p.createP("");
text_instruction.style("font-family", "monospace");
text_instruction.position(10, insize-60);
//text_instruction.hide();
text_temperature = p.createP("");
text_temperature.style("font-family", "monospace");
text_temperature.position(screen_width-140, insize+3.5);
//text_temperature.hide();
text_title = p.createP(title_text);
text_title.style("font-family", "monospace");
text_title.style("font-size", "16");
text_title.style("color", "#3393d1"); // ff990a
text_title.position(10, -10);
};
var reset_screen_text = function() {
var class_name = model.name;
class_name = class_name.split('_').join(' ')
text_instruction.html('draw partial '+class_name+'.');
text_temperature.html("temperature: "+temperature);
};
var redraw_screen = function() {
var i, j;
p.background(255, 255, 255, 255);
p.fill(255, 255, 255, 255);
reset_screen_text();
for(i=0;i<Nsize;i++) {
for(j=0;j<Nsize;j++) {
origin_x[i][j] = j*outsize+screen_width/2;
origin_y[i][j] = i*outsize;
}
}
p.stroke(0.25);
p.strokeWeight(0.25);
p.rect(1, 1, screen_width-1, screen_width/2-1);
for(i=0;i<Nsize;i++) {
p.line(screen_width/2+outsize*i-1, 1, screen_width/2+outsize*i-1, screen_width/2);
}
for(j=1;j<Nsize;j++) {
p.line(screen_width/2-1, outsize*j, screen_width, outsize*j);
}
// draw human drawing
if (strokes && strokes.length > 0) {
draw_example(strokes, start_x, start_y, line_color, 3.0);
}
if (raw_strokes && raw_strokes.length > 0) {
draw_example(raw_strokes, start_x, start_y, raw_line_color, line_width);
}
// draw on the model screens
var o_x, o_y;
var scale = Nsize;
var scaled_strokes = model.scale_drawing_by_factor(raw_strokes, 1.0/scale);
// individual models:
for (i=0;i<Nsize;i++) {
for (j=0;j<Nsize;j++) {
o_x = origin_x[i][j];
o_y = origin_y[i][j];
draw_example(scaled_strokes, o_x+start_x/scale, o_y+start_y/scale, raw_line_color, line_width);
}
}
};
var restart_all_models = function() {
var i, j;
// individual models:
for (i=0;i<Nsize;i++) {
for (j=0;j<Nsize;j++) {
model_state[i][j] = model.zero_state();
model_x[i][j] = 0;
model_y[i][j] = 0;
model_dx[i][j] = 0;
model_dy[i][j] = 0;
model_is_active[i][j] = false;
model_steps[i][j] = 0;
model_prev_pen[i][j] = [0, 1, 0];
}
}
};
var encode_all_models = function(sequence) {
// encode from beginning of human-generated sequence to present.
var i, j;
if (sequence.length <= min_sequence_length) {
return;
}
var short_sequence = model.copy_drawing(sequence, model.max_seq_length);
// encode sequence
var rnn_state = model.zero_state();
rnn_state = model.update(model.zero_input(), rnn_state);
for (i=0;i<sequence.length-1;i++) {
rnn_state = model.update(sequence[i], rnn_state);
}
// individual models:
var sx = last_point[0];
var sy = last_point[1];
var dx, dy, pen_down, pen_up, pen_end;
var s = sequence[sequence.length-1];
for (i=0;i<Nsize;i++) {
for (j=0;j<Nsize;j++) {
model_state[i][j] = model.copy_state(rnn_state); // bounded
model_x[i][j] = sx;
model_y[i][j] = sy;
dx = s[0];
dy = s[1];
pen_down = s[2];
pen_up = s[3];
pen_end = s[4];
model_dx[i][j] = dx;
model_dy[i][j] = dy;
model_is_active[i][j] = true;
model_steps[i][j] = 0;
model_prev_pen[i][j] = [pen_down, pen_up, pen_end];
}
}
};
var inside_box = function(x, y) {
if (x >0 && y > 0 && x < outsize && y < outsize) {
return true;
}
return false;
};
var process_models = function() {
var i, j;
var pdf; // store all the parameters of a mixture-density distribution
var m_dx, m_dy, m_x, m_y;
var m_pen_down, m_pen_up, m_pen_end;
var x0, y0, x1, y1;
var o_x, o_y;
var scale = Nsize;
// individual models:
for (i=0;i<Nsize;i++) {
for (j=0;j<Nsize;j++) {
if (model_steps[i][j] > model.max_seq_len) {
model_is_active[i][j] = false;
}
if (model_is_active[i][j]) {
o_x = origin_x[i][j];
o_y = origin_y[i][j];
m_x = model_x[i][j];
m_y = model_y[i][j];
m_dx = model_dx[i][j];
m_dy = model_dy[i][j];
m_pen_down = model_prev_pen[i][j][0];
m_pen_up = model_prev_pen[i][j][1];
m_pen_end = model_prev_pen[i][j][2];
model_state[i][j] = model.update([m_dx, m_dy, m_pen_down, m_pen_up, m_pen_end], model_state[i][j]);
model_steps[i][j] += 1;
pdf = model.get_pdf(model_state[i][j]);
[m_dx, m_dy, m_pen_down, m_pen_up, m_pen_end] = model.sample(pdf, temperature, 0.5+0.5*temperature);
if (m_pen_end === 1) {
model_is_active[i][j] = false;
if (async_draw) {
continue;
} else {
return;
}
}
if (model_prev_pen[i][j][0] == 1) {
// draw line connecting prev point to current point.
x0 = m_x/scale;
y0 = m_y/scale;
x1 = (m_x+m_dx)/scale;
y1 = (m_y+m_dy)/scale;
if (inside_box(x0, y0) && inside_box(x1, y1)) {
p.stroke(predict_line_color);
p.strokeWeight(line_width);
p.line(o_x+x0, o_y+y0, o_x+x1, o_y+y1);
}
}
model_dx[i][j] = m_dx;
model_dy[i][j] = m_dy;
model_prev_pen[i][j] = [m_pen_down, m_pen_up, m_pen_end];
model_x[i][j] += m_dx;
model_y[i][j] += m_dy;
if (!async_draw) {
return; // draw one at a time
}
}
}
}
};
var draw_user_strokes = function(x, y, dx, dy) {
// draw on large main screen
p.stroke(raw_line_color);
p.strokeWeight(line_width); // nice thick line
p.line(x, y, x+dx, y+dy); // draw line connecting prev point to current point.
// draw on the model screens
var i, j;
var o_x, o_y, x0, y0, x1, y1;
var scale = Nsize;
// individual models:
for (i=0;i<Nsize;i++) {
for (j=0;j<Nsize;j++) {
o_x = origin_x[i][j];
o_y = origin_y[i][j];
x0 = x/scale;
y0 = y/scale;
x1 = (x+dx)/scale;
y1 = (y+dy)/scale;
p.stroke(raw_line_color);
p.strokeWeight(line_width);
p.line(o_x+x0, o_y+y0, o_x+x1, o_y+y1);
}
}
};
var restart = function() {
restart_all_models();
// input setup
// start drawing from somewhere in middle of the canvas
var r = p.random(64, 224);
var g = p.random(64, 224);
var b = p.random(64, 224);
line_color = p.color(r, g, b, 64);
raw_line_color = p.color(r, g, b, 255);; // p.color(p.random(64, 224), p.random(64, 224), p.random(64, 224));
r = p.random(64, 224);
g = p.random(64, 224);
b = p.random(64, 224);
predict_line_color = p.color(r, g, b, 255);
x = insize/2.0;
y = insize/2.0;
has_started = false;
strokes = [];
raw_strokes = [];
raw_lines = [];
current_raw_line = [];
redraw_screen();
}
p.setup = function() {
init();
restart();
};
var process_user_input = function() {
// record pen drawing from user:
if (p.mouseIsPressed && (p.mouseX <= insize) && (p.mouseY <= insize-27)) { // pen is touching the paper
if (has_started == false) { // first time anything is written
has_started = true;
x = p.mouseX;
y = p.mouseY;
start_x = x;
start_y = y;
pen = 0;
current_raw_line.push([x, y]);
} else {
if (pen == 1) {
redraw_screen();
}
var dx0 = p.mouseX-x; // candidate for dx
var dy0 = p.mouseY-y; // candidate for dy
if (dx0*dx0+dy0*dy0 > epsilon*epsilon) { // only if pen is not in same area
dx = dx0;
dy = dy0;
pen = 0;
if (prev_pen == 0) {
draw_user_strokes(x, y, dx, dy);
}
// update the absolute coordinates from the offsets
x += dx;
y += dy;
// update raw_lines
current_raw_line.push([x, y]);
just_finished_line = true;
// using the previous pen states, and hidden state, get next hidden state
// update_rnn_state();
}
}
} else { // pen is above the paper
pen = 1;
if (just_finished_line) {
current_raw_line_simple = DataTool.simplify_line(current_raw_line);
if (current_raw_line_simple.length > 1) {
if (raw_lines.length === 0) {
last_point = [start_x, start_y];
} else {
idx = raw_lines.length-1;
last_point = raw_lines[idx][raw_lines[idx].length-1];
}
raw_stroke = DataTool.line_to_stroke(current_raw_line, last_point);
raw_strokes = raw_strokes.concat(raw_stroke);
stroke = DataTool.line_to_stroke(current_raw_line_simple, last_point);
raw_lines.push(current_raw_line_simple);
strokes = strokes.concat(stroke);
redraw_screen();
// rock it!
idx = raw_lines.length-1;
last_point = raw_lines[idx][raw_lines[idx].length-1];
encode_all_models(strokes)
} else {
if (raw_lines.length === 0) {
has_started = false;
}
}
current_raw_line = [];
just_finished_line = false;
}
/*
if (pen !== prev_pen) {
// using the previous pen states, and hidden state, get next hidden state
update_rnn_state();
}
*/
}
prev_pen = pen;
};
p.draw = function() {
process_user_input();
if (pen === 1) {
process_models();
}
};
var random_model_button_event = function() {
var item = class_list[Math.floor(Math.random()*class_list.length)];
model_sel.value(item);
model_sel_event();
};
var reset_button_event = function() {
restart();
};
var temperature_slider_event = function() {
temperature = temperature_slider.value()/100;
redraw_screen();
restart_all_models();
encode_all_models(strokes);
};
var predict_button_event = function() {
redraw_screen();
restart_all_models();
encode_all_models(strokes);
};
var model_sel_event = function() {
var c = model_sel.value();
// var v = vae_sel.value();
var v = "gen";
var call_back = function(new_model) {
model = new_model;
model.set_pixel_factor(screen_scale_factor);
redraw_screen();
restart_all_models();
encode_all_models(strokes);
set_title_text('sketch-rnn '+model.info.name+' predictor.');
var large_model_mode = false;
async_draw = true;
if (model.zero_state()[0].size > 512) {
large_model_mode = true;
async_draw = false;
}
}
set_title_text('loading model '+c+'...<br/><br/><br/>input disabled.');
ModelImporter.change_model(model, c, v, call_back);
};
};
var custom_p5 = new p5(sketch, 'sketch');