Comments (8)
CedricGuillemet
commented on July 16, 2024
5
I'm working on it :)
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PicosePablo
commented on July 16, 2024
Yes, and can u make better comments? There are functions without any help (ex: SetRect). Im not sure about how to use this....
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w1th0utnam3
commented on July 16, 2024
I would really appreciate a small example that works on its own. I currently cannot get ImGuizmo to draw anything and I'm not sure whether it is because of the view/projection matrices or because I call the functions in the wrong order.
At the moment I call
ImGuizmo::BeginFrame();
ImGuizmo::Enable(true);
ImGuiIO& io = ImGui::GetIO();
ImGuizmo::SetRect(0, 0, io.DisplaySize.x, io.DisplaySize.y);
glm::fmat4 view = m_camera->modelViewMatrix();
glm::fmat4 projection = m_camera->projectionMatrix();
ImGuizmo::DrawCube(&view[0][0], &projection[0][0], &matrix[0][0]);
ImGuizmo::Manipulate(&view[0][0], &projection[0][0], ImGuizmo::ROTATE, ImGuizmo::WORLD, &matrix[0][0]);
right after ImGuiGlfw3NewFrame() in the render loop but nothing is drawn. The matrix variable is initialized to the identity matrix and I tried to supply my real view and projection matrices as well as identity matrices. Standard ImGui windows are drawn correctly btw. Do you have any advice?
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CedricGuillemet
commented on July 16, 2024
Hi Fabian,
Can you dump the view & projection matrices?
I don't see anything strange in your code.
best
Cedric
…On Fri, May 26, 2017 at 3:22 AM, Fabian Löschner ***@***.***> wrote:
I would really appreciate a small example that works on its own. I
currently cannot get ImGuizmo to draw anything and I'm not sure whether it
is because of the view/projection matrices or because I call the functions
in the wrong order.
At the moment I call
ImGuizmo::BeginFrame();
ImGuizmo::Enable(true);
ImGuiIO& io = ImGui::GetIO();
ImGuizmo::SetRect(0, 0, io.DisplaySize.x, io.DisplaySize.y);
glm::fmat4 view = m_camera->modelViewMatrix();
glm::fmat4 projection = m_camera->projectionMatrix();
ImGuizmo::DrawCube(&view[0][0], &projection[0][0], &matrix[0][0]);
ImGuizmo::Manipulate(&view[0][0], &projection[0][0], ImGuizmo::ROTATE, ImGuizmo::WORLD, &matrix[0][0]);
right after ImGuiGlfw3NewFrame() in the render loop but nothing is drawn.
The matrix variable is initialized to the identity matrix and I tried to
supply my real view and projection matrices as well as identity matrices.
Standard ImGui windows are drawn correctly btw. Do you have any advice?
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w1th0utnam3
commented on July 16, 2024
Thanks for the reply, I use the following code to compute the matrices:
void Camera::updateModelViewMatrix()
{
m_modelView = glm::scale(glm::dmat4(), m_scaling);
m_modelView = glm::rotate(m_modelView, glm::angle(m_rotation), glm::axis(m_rotation));
}
void Camera::updateProjectionMatrix()
{
const double diag = std::hypot(m_viewportSize.x, m_viewportSize.y);
m_projection = glm::ortho<double>(-0.5*m_viewportSize.x*m_zoom, 0.5*m_viewportSize.x*m_zoom, -0.5*m_viewportSize.y*m_zoom, 0.5*m_viewportSize.y*m_zoom, -diag, diag);
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edselmalasig
commented on July 16, 2024
please add a main.cpp
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edselmalasig
commented on July 16, 2024
added mine with object picker http://www.github.com/edselmalasig/ImGuizmo_pick_and_choose
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w1th0utnam3
commented on July 16, 2024
@CedricGuillemet, I found the problem why nothing was drawn: In my call
ImGuizmo::Manipulate(&view[0][0], &projection[0][0], ImGuizmo::ROTATE, ImGuizmo::WORLD, &matrix[0][0]);
I forgot to initialize matrix to anything meaningful (e.g. identity matrix). facepalm
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