124 lines
5.3 KiB
C++
124 lines
5.3 KiB
C++
// https://github.com/CedricGuillemet/ImGuizmo
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// v 1.0 WIP
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//
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// The MIT License(MIT)
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//
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// Copyright(c) 2016 Cedric Guillemet
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files(the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions :
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// -------------------------------------------------------------------------------------------
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// History :
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// 2016/09/01 Mogwai changed to Manipulate. Draw debug cube. Fixed inverted scale. Mixing scale and translation/rotation gives bad results.
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// 2016/08/31 First version
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//
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// -------------------------------------------------------------------------------------------
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// Example
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//
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// static ImGuizmo::OPERATION mCurrentGizmoOperation(ImGuizmo::TRANSLATE);
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// static ImGuizmo::MODE mCurrentGizmoMode(ImGuizmo::LOCAL);
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//
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// // Maya shortcut keys
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// if (ImGui::IsKeyPressed(90)) // w Key
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// mCurrentGizmoOperation = ImGuizmo::TRANSLATE;
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// if (ImGui::IsKeyPressed(69)) // e Key
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// mCurrentGizmoOperation = ImGuizmo::ROTATE;
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// if (ImGui::IsKeyPressed(82)) // r Key
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// mCurrentGizmoOperation = ImGuizmo::SCALE;
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//
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// if (ImGui::RadioButton("Translate", mCurrentGizmoOperation == ImGuizmo::TRANSLATE))
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// mCurrentGizmoOperation = ImGuizmo::TRANSLATE;
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// ImGui::SameLine();
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// if (ImGui::RadioButton("Rotate", mCurrentGizmoOperation == ImGuizmo::ROTATE))
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// mCurrentGizmoOperation = ImGuizmo::ROTATE;
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// ImGui::SameLine();
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// if (ImGui::RadioButton("Scale", mCurrentGizmoOperation == ImGuizmo::SCALE))
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// mCurrentGizmoOperation = ImGuizmo::SCALE;
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//
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// float matrixTranslation[3], matrixRotation[3], matrixScale[3];
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// ImGuizmo::DecomposeMatrixToComponents(gizmoMatrix.m16, matrixTranslation, matrixRotation, matrixScale);
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// ImGui::InputFloat3("Tr", matrixTranslation, 3);
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// ImGui::InputFloat3("Rt", matrixRotation, 3);
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// ImGui::InputFloat3("Sc", matrixScale, 3);
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// ImGuizmo::RecomposeMatrixFromComponents(matrixTranslation, matrixRotation, matrixScale, gizmoMatrix.m16);
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//
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// if (ImGui::RadioButton("Local", mCurrentGizmoMode == ImGuizmo::LOCAL))
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// mCurrentGizmoMode = ImGuizmo::LOCAL;
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// ImGui::SameLine();
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// if (ImGui::RadioButton("World", mCurrentGizmoMode == ImGuizmo::WORLD))
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// mCurrentGizmoMode = ImGuizmo::WORLD;
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//
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// ImGuizmo::Mogwai(gCurrentCamera->mView.m16, gCurrentCamera->mProjection.m16, mCurrentGizmoOperation, mCurrentGizmoMode, gizmoMatrix.m16);
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//
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#pragma once
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namespace ImGuizmo
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{
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// call BeginFrame right after ImGui_XXXX_NewFrame();
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void BeginFrame();
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// return true if mouse cursor is over any gizmo control (axis, plan or screen component)
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bool IsOver();
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// return true if mouse IsOver or if the gizmo is in moving state
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bool IsUsing();
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// enable/disable the gizmo. Stay in the state until next call to Enable.
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// gizmo is rendered with gray half transparent color when disabled
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void Enable(bool enable);
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// helper functions for manualy editing translation/rotation/scale with an input float
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// translation, rotation and scale float points to 3 floats each
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// Angles are in degrees (more suitable for human editing)
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// example:
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// float matrixTranslation[3], matrixRotation[3], matrixScale[3];
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// ImGuizmo::DecomposeMatrixToComponents(gizmoMatrix.m16, matrixTranslation, matrixRotation, matrixScale);
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// ImGui::InputFloat3("Tr", matrixTranslation, 3);
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// ImGui::InputFloat3("Rt", matrixRotation, 3);
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// ImGui::InputFloat3("Sc", matrixScale, 3);
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// ImGuizmo::RecomposeMatrixFromComponents(matrixTranslation, matrixRotation, matrixScale, gizmoMatrix.m16);
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//
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// These functions have some numerical stability issues for now. Use with caution.
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void DecomposeMatrixToComponents(const float *matrix, float *translation, float *rotation, float *scale);
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void RecomposeMatrixFromComponents(const float *translation, const float *rotation, const float *scale, float *matrix);
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// Render a cube with face color corresponding to face normal. Usefull for debug/tests
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void DrawCube(const float *view, const float *projection, float *matrix);
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// call it when you want a gizmo
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// Needs view and projection matrices.
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// matrix parameter is the source matrix (where will be gizmo be drawn) and might be transformed by the function. Return deltaMatrix is optional
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// translation is applied in world space
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enum OPERATION
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{
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TRANSLATE,
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ROTATE,
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SCALE
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};
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enum MODE
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{
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LOCAL,
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WORLD
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};
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void Manipulate(const float *view, const float *projection, OPERATION operation, MODE mode, float *matrix, float *deltaMatrix = 0);
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};
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