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More fiddling with the graphs.

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This commit is contained in:
Shoofle 2013-09-04 17:52:50 -04:00
parent a2fab9b420
commit 5fee33dd13
1 changed files with 38 additions and 20 deletions
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58
articles/dynamic_systems_in_games/engine.js
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@ -1,7 +1,6 @@
var a=true; var a=true;
function engine(element, reaction_rate_function) { function engine(element, reaction_rate_function) {
var container = $(element); var container = $(element);
var graph, graph_plot;
var q = {}; var q = {};
q.temperature = { q.temperature = {
"update": function () { "update": function () {
@ -38,7 +37,7 @@ function engine(element, reaction_rate_function) {
var temperature_decay = 0.5; var temperature_decay = 0.5;
var timestep=10; var timestep=10;
var graph_config = { var graph, graph_plot, graph_config = {
xaxis: { min:0, max:15, tickSize: 3 }, xaxis: { min:0, max:15, tickSize: 3 },
yaxis: { min:-4, max:4, show: false }, yaxis: { min:-4, max:4, show: false },
series: { series: {
@ -46,36 +45,54 @@ function engine(element, reaction_rate_function) {
lineWidth: 4, lineWidth: 4,
}, },
points: { points: {
show: true,
radius: 0.1, radius: 0.1,
} }
}, },
colors: ['red'], colors: ['red'],
}; };
function update_graph() { function update_graph() {
var step_size = 0.3; var step_size = 0.5;
var ghost_count = 1, ghost_separation = 0.03;
var data = [
{data: [], lines: {show: false}, points: {show: true}},
{data: [], lines: {show: true}, points: {show: false}},
{data: [], lines: {show: false}, points: {show: true}},
];
var points = [$.extend({}, q), jQuery.extend({}, q), jQuery.extend({}, q)];
var flow_value = q.fuel_flow_rate.value; var flow_value = q.fuel_flow_rate.value;
for (var series=0; series<3; series++) { var the_current_potential=0, delta;
points[series].fuel_flow_rate = {"value": flow_value + 0.01*(series-1)};
points[series].temperature = {"value": 0};
var prev=0; var d = [{"data": [], lines: {show: true}, points: {show: false}}];
for (var i=0; i<15; i+=step_size) { var points = [$.extend({}, q, {"fuel_flow_rate": {"value": flow_value}, "temperature": {"value": 0}})];
points[series].temperature.value = i; var potentials = [0];
prev = prev - step_size * reaction_rate_function(points[series]);
data[series].data.push([i, prev]); for (var s=1; s <= ghost_count; s++) {
d.push( {"data": [], lines: {show: false}, points: {show: true}});
var p1 = $.extend({}, q);
$.extend(p1, {"fuel_flow_rate": {"value": flow_value + ghost_separation * s}, "temperature": {"value": 0}});
points.push(p1);
potentials.push(0)
d.push( {"data": [], lines: {show: false}, points: {show: true}});
var p2 = $.extend({}, q);
$.extend(p2, {"fuel_flow_rate": {"value": flow_value - ghost_separation * s}, "temperature": {"value": 0}});
points.push(p2);
potentials.push(0)
}
for (var i=0; i<15; i+=step_size) {
for (var s=0; s<potentials.length; s++) {
d[s].data.push([i, potentials[s]]);
points[s].temperature.value = i;
delta = -1 * reaction_rate_function(points[s]);
if (s == 0 && (i <= q.temperature.value) && (q.temperature.value < i+step_size)) {
the_current_potential = potentials[0] + delta * (q.temperature.value - i);
}
potentials[s] += delta * step_size;
} }
} }
if (a) { console.log(points); a=false; } d.push({
data: [[q.temperature.value, -10], [q.temperature.value, the_current_potential], [q.temperature.value, 10]],
lines: {show: true, lineWidth: 1},
points: {show: true, radius: 3},
color: 'blue',
});
if (a) { console.log(points); a=false; }
graph_plot.setData(data); graph_plot.setData(d);
graph_plot.draw(); graph_plot.draw();
} }
@ -92,5 +109,6 @@ function engine(element, reaction_rate_function) {
'quantities': q, 'quantities': q,
'graph_container': graph, 'graph_container': graph,
'graph_plot': graph_plot, 'graph_plot': graph_plot,
'poke': function () { this.graph_container = graph; this.graph_plot = graph_plot; },
}; };
} }