max98/imviewguizmo

View Guizmo for ImGui

ImViewGuizmo

A clone of imoguizmo stripped of interactive functions and using an ImGuizmo-ish style of rendering.

This also includes a fix for the stretching problem if the projection matrix's aspect ratio is not equal to 1:1.

A simple C++11 header only interactive orientation gizmo for ImGui.

Usage example

#include "ImViewGuizmo.hpp"

ImGui::Begin("RenderView", nullptr);
{
	wsize = ImGui::GetWindowSize();
	//All of your rendering view code...

	if (glIsTexture(m_frameBufferTex)) {
		ImGui::Image((ImTextureID)m_frameBufferTex, wsize, ImVec2(0, 1), ImVec2(1, 0));
		//Draw ImGuizmo
		_drawGuizmo();

		//Draw ImViewGuizmo
		if (m_pCurrCamera != nullptr) {
			auto viewMatrix = (float*)glm::value_ptr(m_pCurrCamera->getViewMatrix());
			auto projMat = glm::value_ptr(m_pCurrCamera->getProjectionMatrix());

			ImViewGuizmo::SetRect(ImGui::GetWindowPos().x, ImGui::GetWindowPos().y + wsize.y - 150, 150, 150);
			ImViewGuizmo::drawGizmo(viewMatrix, projMat, (float)m_rendererWidth / (float)m_rendererHeight);
		}
	}
	ImGui::End();
}

Note: ImViewGuizmo::drawGizmo() must be called inside an ImGui window.

Drag

License (MIT)