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fbx exporter: handle default transform of meshes
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@LeoVgr
LeoVgr committed Jan 10, 2024
1 parent 1dcadd5 commit 50c4ae1
Showing 1 changed file with 82 additions and 41 deletions.
123 changes: 82 additions & 41 deletions hxd/fmt/fbx/Writer.hx
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Original file line number Diff line number Diff line change
Expand Up @@ -159,11 +159,11 @@ class Writer {
var properties : FbxNode = { name:"Properties70", props: null, childs: [
{ name: "P", props: [PString("UpAxis"), PString("int"), PString("Integer"), PString(""), PInt(2) ], childs:null },
{ name: "P", props: [PString("UpAxisSign"), PString("int"), PString("Integer"), PString(""), PInt(1) ], childs:null },
{ name: "P", props: [PString("FrontAxis"), PString("int"), PString("Integer"), PString(""), PInt(1) ], childs:null },
{ name: "P", props: [PString("FrontAxisSign"), PString("int"), PString("Integer"), PString(""), PInt(1) ], childs:null },
{ name: "P", props: [PString("CoordAxis"), PString("int"), PString("Integer"), PString(""), PInt(0) ], childs:null },
{ name: "P", props: [PString("FrontAxis"), PString("int"), PString("Integer"), PString(""), PInt(0) ], childs:null },
{ name: "P", props: [PString("FrontAxisSign"), PString("int"), PString("Integer"), PString(""), PInt(-1) ], childs:null },
{ name: "P", props: [PString("CoordAxis"), PString("int"), PString("Integer"), PString(""), PInt(1) ], childs:null },
{ name: "P", props: [PString("CoordAxisSign"), PString("int"), PString("Integer"), PString(""), PInt(-1) ], childs:null },
{ name: "P", props: [PString("OriginalUpAxis"), PString("int"), PString("Integer"), PString(""), PInt(2) ], childs:null },
{ name: "P", props: [PString("OriginalUpAxis"), PString("int"), PString("Integer"), PString(""), PInt(-1) ], childs:null },
{ name: "P", props: [PString("OriginalUpAxisSign"), PString("int"), PString("Integer"), PString(""), PInt(1) ], childs:null },
{ name: "P", props: [PString("UnitScaleFactor"), PString("double"), PString("Number"), PString(""), PInt(100) ], childs:null },
{ name: "P", props: [PString("OriginalUnitScaleFactor"), PString("double"), PString("Number"), PString(""), PInt(1) ], childs:null },
Expand Down Expand Up @@ -429,22 +429,23 @@ class Writer {
]}
] };

@:privateAccess var objectRot = object.qRot.toMatrix();
objectRot._12 = -objectRot._12;
objectRot._13 = -objectRot._13;
objectRot._21 = -objectRot._21;
objectRot._31 = -objectRot._31;
objectRot._41 = -objectRot._41;
var t = object.getTransform();
t = object.defaultTransform.multiplied(t);

t._12 = -t._12;
t._13 = -t._13;
t._21 = -t._21;
t._31 = -t._31;
t._41 = -t._41;

var rot = objectRot.getEulerAngles() * (180.0 / Math.PI);
var model : FbxNode = { name:"Model", props: [PInt(modelId), PString('Model::${mesh.name}'), PString("Mesh")], childs:[
{ name:"Version", props:[ PInt(232)], childs:null },
{ name:"Properties70", props: null, childs: [
{ name:"P", props:[PString("InheritType"), PString("enum"), PString(""), PString(""), PInt(1)], childs: null },
{ name:"P", props:[PString("DefaultAttributeIndex"), PString("int"), PString("Integer"), PString(""), PInt(0)], childs: null },
{ name:"P", props:[PString("Lcl Translation"), PString("Lcl Translation"), PString(""), PString("A"), PFloat(-object.x), PFloat(object.y), PFloat(object.z)], childs: null },
{ name:"P", props:[PString("Lcl Rotation"), PString("Lcl Rotation"), PString(""), PString("A"), PFloat(rot.x), PFloat(rot.y), PFloat(rot.z)], childs: null },
{ name:"P", props:[PString("Lcl Scaling"), PString("Lcl Scaling"), PString(""), PString("A"), PFloat(object.scaleX), PFloat(object.scaleY), PFloat(object.scaleZ)], childs: null },
{ name:"P", props:[PString("Lcl Translation"), PString("Lcl Translation"), PString(""), PString("A"), PFloat(t.getPosition().x), PFloat(t.getPosition().y), PFloat(t.getPosition().z)], childs: null },
{ name:"P", props:[PString("Lcl Rotation"), PString("Lcl Rotation"), PString(""), PString("A"), PFloat(Math.radToDeg(t.getEulerAngles().x)), PFloat(Math.radToDeg(t.getEulerAngles().y)), PFloat(Math.radToDeg(t.getEulerAngles().z))], childs: null },
{ name:"P", props:[PString("Lcl Scaling"), PString("Lcl Scaling"), PString(""), PString("A"), PFloat(t.getScale().x), PFloat(t.getScale().y), PFloat(t.getScale().z)], childs: null },
]}
] };

Expand Down Expand Up @@ -552,49 +553,89 @@ class Writer {
}

var roots : Array<h3d.scene.Mesh> = [];
var root : h3d.scene.Mesh = null;
function extractMeshes( o : h3d.scene.Object, ?parent : h3d.scene.Mesh) {
var m = Std.downcast(o, h3d.scene.Mesh);

if (m == null) {
for( c in @:privateAccess o.children ) {
var m2 = Std.downcast(c, h3d.scene.Mesh);
if( m2 != null && m2.name == "root") {
var mesh = clone(m2);

// Since it's the parent object that is holding informations
// apply it on mesh object
clone(o, mesh);

if (root == null)
root = cast mesh;

if (parent != null)
parent.addChild(mesh);

parent = cast mesh;
if (c.name == "root") {
if( m2 != null) {
var mesh = clone(m2);

// Since it's the parent object that is holding informations
// apply it on mesh object
clone(o, mesh);

if (parent == null)
roots.push(mesh);

if (parent != null) {
parent.addChild(mesh);

if (parent.defaultTransform != null) {
var t = mesh.getTransform().multiplied(parent.defaultTransform.getInverse());
mesh.x = t.getPosition().x;
mesh.y = t.getPosition().y;
mesh.z = t.getPosition().z;

var q : h3d.Quat = new h3d.Quat();
q.initRotation(t.getEulerAngles().x, t.getEulerAngles().y, t.getEulerAngles().z);
@:privateAccess mesh.qRot.w = q.w;
@:privateAccess mesh.qRot.x = q.x;
@:privateAccess mesh.qRot.y = q.y;
@:privateAccess mesh.qRot.z = q.z;

mesh.scaleX = t.getScale().x;
mesh.scaleY = t.getScale().y;
mesh.scaleZ = t.getScale().z;
}
}

parent = cast mesh;
}
}
}
}
else if (m.name != "root") {
if (root == null)
root = cast clone(m);

if (parent == null)
parent = cast clone(m);
else
parent.addChild(clone(m));
var mesh = clone(m);
if (parent == null) {
roots.push(mesh);
parent = cast mesh;
}
else {
parent.addChild(mesh);

if (parent.defaultTransform != null) {
var t = mesh.getTransform().multiplied(parent.defaultTransform.getInverse());
mesh.x = t.getPosition().x;
mesh.y = t.getPosition().y;
mesh.z = t.getPosition().z;

var q : h3d.Quat = new h3d.Quat();
q.initRotation(t.getEulerAngles().x, t.getEulerAngles().y, t.getEulerAngles().z);
@:privateAccess mesh.qRot.w = q.w;
@:privateAccess mesh.qRot.x = q.x;
@:privateAccess mesh.qRot.y = q.y;
@:privateAccess mesh.qRot.z = q.z;

mesh.scaleX = t.getScale().x;
mesh.scaleY = t.getScale().y;
mesh.scaleZ = t.getScale().z;
}
}
}

for( c in @:privateAccess o.children )
for( c in @:privateAccess o.children ) {
extractMeshes(c, parent);
}
}

for (o in objects) {
root = null;
// We have to extract meshes object from the incomming objects to remove
// non-needed parent objects that are created in hide in make instance
// of model
for (o in objects)
extractMeshes(o);
roots.push(root);
}

writeHeader();
writeNode(buildGlobalSettings());
Expand Down

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