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Add bounding box calculator.

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This commit is contained in:
Viktor Kovacs 2021-05-15 12:04:48 +02:00
parent 4ee5eb6040
commit 39ecb7af61
2 changed files with 29 additions and 13 deletions
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26
source/geometry/box3d.js
View File

@ -25,3 +25,29 @@ OV.Box3D = class
); );
} }
}; };
OV.BoundingBoxCalculator3D = class
{
constructor ()
{
this.box = new OV.Box3D (
new OV.Coord3D (Infinity, Infinity, Infinity),
new OV.Coord3D (-Infinity, -Infinity, -Infinity)
);
}
GetBox ()
{
return this.box;
}
AddPoint (point)
{
this.box.min.x = Math.min (this.box.min.x, point.x);
this.box.min.y = Math.min (this.box.min.y, point.y);
this.box.min.z = Math.min (this.box.min.z, point.z);
this.box.max.x = Math.max (this.box.max.x, point.x);
this.box.max.y = Math.max (this.box.max.y, point.y);
this.box.max.z = Math.max (this.box.max.z, point.z);
}
};

16
source/model/modelutils.js
View File

@ -205,20 +205,10 @@ OV.EnumerateModelTrianglesWithNormals = function (model, onTriangle)
OV.GetMeshBoundingBox = function (mesh) OV.GetMeshBoundingBox = function (mesh)
{ {
let box = new OV.Box3D ( let calculator = new OV.BoundingBoxCalculator3D ();
new OV.Coord3D (Infinity, Infinity, Infinity),
new OV.Coord3D (-Infinity, -Infinity, -Infinity)
);
for (let i = 0; i < mesh.VertexCount (); i++) { for (let i = 0; i < mesh.VertexCount (); i++) {
let vertex = mesh.GetVertex (i); let vertex = mesh.GetVertex (i);
box.min.x = Math.min (box.min.x, vertex.x); calculator.AddPoint (vertex);
box.min.y = Math.min (box.min.y, vertex.y);
box.min.z = Math.min (box.min.z, vertex.z);
box.max.x = Math.max (box.max.x, vertex.x);
box.max.y = Math.max (box.max.y, vertex.y);
box.max.z = Math.max (box.max.z, vertex.z);
} }
return calculator.GetBox ();
return box;
}; };