Doni/ModelHandle
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Calculate world transformation from node.

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This commit is contained in:
kovacsv 2021-10-26 07:53:25 +02:00
parent 034c4079c9
commit 92eac095e1
4 changed files with 64 additions and 7 deletions
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12
source/geometry/matrix.js
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@ -394,3 +394,15 @@ OV.Matrix = class
return new OV.Matrix (result);
}
};
OV.MatrixIsEqual = function (a, b)
{
const aMatrix = a.Get ();
const bMatrix = b.Get ();
for (let i = 0; i < 16; i++) {
if (!OV.IsEqual (aMatrix[i], bMatrix[i])) {
return false;
}
}
return true;
};

5
source/geometry/transformation.js
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@ -51,3 +51,8 @@ OV.Transformation = class
return new OV.Transformation (clonedMatrix);
}
};
OV.TransformationIsEqual = function (a, b)
{
return OV.MatrixIsEqual (a.GetMatrix (), b.GetMatrix ());
};

16
source/model/node.js
View File

@ -42,7 +42,7 @@ OV.Node = class
{
return this.name;
}
SetName (name)
{
this.name = name;
@ -63,9 +63,21 @@ OV.Node = class
return this.transformation;
}
GetWorldTransformation ()
{
let transformation = this.transformation.Clone ();
let parent = this.parent;
while (parent !== null) {
const parentTransformation = parent.transformation.Clone ();
transformation = parentTransformation.Append (transformation);
parent = parent.parent;
}
return transformation;
}
SetTransformation (transformation)
{
this.transformation = transformation;
this.transformation = transformation;
}
AddChildNode (node)

38
test/tests/node_test.js
View File

@ -17,7 +17,7 @@ describe ('Node', function() {
let node2 = new OV.Node ();
assert (node2.IsEmpty ());
node2.AddChildNode (new OV.Node ());
assert (!node2.IsEmpty ());
assert (!node2.IsEmpty ());
});
it ('Set Name', function () {
@ -25,7 +25,7 @@ describe ('Node', function() {
node.SetName ('New Name');
assert.strictEqual (node.GetName (), 'New Name');
});
it ('Set Transformation', function () {
let node = new OV.Node ();
assert (node.GetTransformation ().IsIdentity ());
@ -81,7 +81,7 @@ describe ('Node', function() {
enumeratedChildren.push (child);
});
assert.deepStrictEqual (enumeratedChildren, [child1, child11, child12, child2]);
});
});
it ('Recursive Mesh Index Enumeration', function () {
let node = new OV.Node ();
@ -111,17 +111,45 @@ describe ('Node', function() {
assert.deepStrictEqual (enumerated, [1, 2, 3, 5, 6, 4]);
});
it ('World Transformation', function () {
let rotation = OV.QuaternionFromAxisAngle (new OV.Coord3D (0.0, 0.0, 1.0), Math.PI / 2.0);
let tr1 = new OV.Transformation (new OV.Matrix ().CreateTranslation (2.0, 0.0, 0.0));
let tr2 = new OV.Transformation (new OV.Matrix ().CreateRotation (rotation.x, rotation.y, rotation.z, rotation.w));
let tr3 = new OV.Transformation (new OV.Matrix ().CreateTranslation (0.0, 0.0, 2.0));
let refTr = new OV.Transformation ().Append (tr1).Append (tr2).Append (tr3);
let node1 = new OV.Node ();
node1.SetTransformation (tr1);
let node2 = new OV.Node ();
node2.SetTransformation (tr2);
let node3 = new OV.Node ();
node3.SetTransformation (tr3);
node1.AddChildNode (node2);
node2.AddChildNode (node3);
let nodeTr = node3.GetWorldTransformation ();
assert (OV.TransformationIsEqual (node1.GetTransformation (), tr1));
assert (OV.TransformationIsEqual (node2.GetTransformation (), tr2));
assert (OV.TransformationIsEqual (node3.GetTransformation (), tr3));
assert (OV.TransformationIsEqual (nodeTr, refTr));
});
it ('Id Generator', function () {
let node1 = new OV.Node ();
let node2 = new OV.Node ();
let node3 = new OV.Node ();
let node4 = new OV.Node ();
assert.strictEqual (node1.GetId (), 0);
assert.strictEqual (node2.GetId (), 0);
assert.strictEqual (node3.GetId (), 0);
assert.strictEqual (node4.GetId (), 0);
node1.AddChildNode (node2);
assert.strictEqual (node2.GetId (), 1);