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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
pragma Singleton
import QtQml
QtObject {
property Component newPlanner: Planner {}
property Component newVariable: Variable {}
property Component newConstraint: Constraint {
id: constraint
Component.onCompleted: planner.incrementalAdd(constraint)
}
property Component newPlan: Plan {}
// Global variable holding the current planner.
property Planner planner: null
property Variable prev
property Variable first
property Variable last
function chainTest(n: int) {
planner = newPlanner.createObject(this) as Planner;
prev = null;
first = null;
last = null;
// Build chain of n equality constraints
for (var i = 0; i <= n; i++) {
var v = newVariable.createObject(this, {objectName: "v" + i}) as Variable;
if (prev !== null) {
newConstraint.createObject(this, {
myInput: prev,
myOutput: v,
strength: Strength.REQUIRED
});
}
if (i === 0)
first = v;
if (i === n)
last = v;
prev = v;
}
newConstraint.createObject(this, {myOutput: last, strength: Strength.STRONG_DEFAULT});
let chainConstraint =
newConstraint.createObject(this, {
isInput: true,
myOutput: first,
strength: Strength.PREFERRED
}) as Constraint;
let plan = newPlan.createObject(this);
planner.populatePlanFromConstraint(chainConstraint, plan);
for (let i = 0; i < 100; i++) {
first.value = i;
plan.execute();
if (last.value != i)
console.error("Chain test failed.");
}
}
property Variable scale
property Variable offset
property Variable src
property Variable dst
property list<Variable> dests
function projectionTest(n: int) {
planner = newPlanner.createObject(this) as Planner;
scale = newVariable.createObject(this, {objectName: "scale", value: 10}) as Variable;
offset = newVariable.createObject(this, {objectName: "offset", value: 1000}) as Variable;
src = null;
dst = null;
dests = [];
for (let i = 0; i < n; i++) {
src = newVariable.createObject(this, {objectName: "src" + i, value: i}) as Variable;
dst = newVariable.createObject(this, {objectName: "dst" + i, value: i}) as Variable;
dests.push(dst);
newConstraint.createObject(this, {myOutput: src, strength: Strength.NORMAL});
newConstraint.createObject(this, {
myInput: src,
myOutput: dst,
scale: scale,
offset: offset,
strength: Strength.REQUIRED
});
}
change(src, 17);
if (dst.value !== 1170)
console.error("Projection 1 failed");
change(dst, 1050);
if (src.value !== 5)
console.error("Projection 2 failed");
change(scale, 5);
for (let i = 0; i < n - 1; i++) {
if (dests[i].value !== i * 5 + 1000)
console.error("Projection 3 failed");
}
change(offset, 2000);
for (let i = 0; i < n - 1; i++) {
if (dests[i].value !== i * 5 + 2000)
console.error("Projection 4 failed");
}
}
property Constraint edit
function change(v: Variable, newValue: int) {
edit = newConstraint.createObject(this, {
isInput: true,
myOutput: v,
strength: Strength.PREFERRED
}) as Constraint
let plan = newPlan.createObject(this);
planner.populatePlanFromConstraint(edit, plan);
for (let i = 0; i < 10; i++) {
v.value = newValue;
plan.execute();
}
if (edit.satisfaction !== Satisfaction.NONE)
planner.incrementalRemove(edit);
else
edit.removeFromGraph();
}
function deltaBlue() {
chainTest(100);
projectionTest(100);
}
}
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