Guizmo position not centered to the origin of the object

[LUK3D]

Guizmo position not centered to the origin of the object

[moebiussurfing]

Hey @LUK3D , @nariakiiwatani

I think that the problem is here:

Bc is getting the viewport rectangle from ImGui but there's no ImGui window, so I switched to get the viewport from OF.

void ofApp::draw() {
	cam_.begin();
	{
		//node_.draw();

		ofPushMatrix();
		{
			node_.transformGL();  // Applies the node's transformation matrix

			ofPushStyle();
			ofNoFill();
			ofDrawBox(25);
			ofPopStyle();
		}
		ofPopMatrix();
	}
	cam_.end();

	//--

	gui_.begin();
	{
		ImGuizmo::BeginFrame();
		auto mat = node_.getLocalTransformMatrix();
		if (ImGuizmo::Manipulate(cam_, mat, op_, mode_)) {
			glm::mat4 transformation;
			glm::vec3 scale;
			glm::quat rotation;
			glm::vec3 translation;
			glm::vec3 skew;
			glm::vec4 perspective;
			glm::decompose(mat, scale, rotation, translation, skew, perspective);
			node_.setPosition(translation);
			node_.setScale(scale);
			node_.setOrientation(rotation);
		}
	}
	gui_.end();
}

[nariakiiwatani]

Thank you for everything!
so good, so nice!

for the viewport problem, I fixed it by getting viewport from ofCamera. ( be0e0ce )
When I made this addon, I have used it inside ImWindow so the rectangle was implicitly same to oF viewport.

for simpler API, I think what @moebiussurfing wanted to do is essentially same to my second Manipulate functionality.
https://github.com/nariakiiwatani/ofxImGuizmo/blob/main/src/ofxImGuizmo.h#L55-L62
I fixed the example using this. ( 9caba8b )

[moebiussurfing]

You can check my modified fork, also with a new example that uses OF helpers:

https://github.com/moebiussurfing/ofxImGuizmo/blob/main/example-ImGuizmo/src/ofApp.cpp

Now the API is more simpler:

	cam_.begin();
	{
		//node_.draw();

		// Applies the node's transformation matrix
		ImGuizmo::beginGuizmoTransform(&node_);
		{
			ofPushStyle();
			ofNoFill();
			ofDrawBox(25);
			ofPopStyle();
		}
		ImGuizmo::endGuizmoTransform();
	}
	cam_.end();

	ImGuizmo::drawImGuizmo(&gui_, &cam_, &node_, op_, mode_);