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Gizmo improvements

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This commit is contained in:
Simon Lübeß
2022-05-15 14:36:07 +02:00
parent 3956080520
commit 62bb5baac9
8 changed files with 108 additions and 38 deletions
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GlitchyEditor/src/EditWindows/SceneViewportWindow.bf
+75 -15
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@@ -41,12 +41,14 @@ namespace GlitchyEditor.EditWindows
ImGui.PushStyleVar(.WindowPadding, ImGui.Vec2(1, 1));
defer ImGui.PopStyleVar();
if(!ImGui.Begin(s_WindowTitle, &_open, .NoScrollbar))
if(!ImGui.Begin(s_WindowTitle, &_open, .NoScrollbar | .MenuBar))
{
ImGui.End();
return;
}
ShowMenuBar();
if(ImGui.IsWindowHovered() && Input.IsMouseButtonPressing(.RightButton))
{
var currentWindow = ImGui.GetCurrentWindow();
@@ -74,8 +76,60 @@ namespace GlitchyEditor.EditWindows
}
}
private ImGuizmo.OPERATION _gizmoType = .TRANSLATE;
private ImGuizmo.MODE _gizmoMode = .LOCAL;
private void ShowMenuBar()
{
if(ImGui.BeginMenuBar())
{
if (ImGui.RadioButton("Position", _gizmoType.HasFlag(.TRANSLATE)))
{
if (Input.IsKeyPressed(Key.Control))
_gizmoType ^= .TRANSLATE;
else
_gizmoType = .TRANSLATE;
}
if (ImGui.RadioButton("Rotation", _gizmoType.HasFlag(.ROTATE)))
{
if (Input.IsKeyPressed(Key.Control))
_gizmoType ^= .ROTATE;
else
_gizmoType = .ROTATE;
}
if (ImGui.RadioButton("Scale", _gizmoType.HasFlag(.SCALE)))
{
if (Input.IsKeyPressed(Key.Control))
_gizmoType ^= .SCALE;
else
_gizmoType = .SCALE;
}
if (ImGui.RadioButton("All", _gizmoType == .TRANSLATE | .ROTATE | .SCALE))
_gizmoType = .TRANSLATE | .ROTATE | .SCALE;
// If we scale, the mode must be local otherwise we could skew the matrix.
if (_gizmoType.HasFlag(.SCALE))
_gizmoMode = .LOCAL;
if (ImGui.MenuItem(_gizmoMode == .WORLD ? "Global" : "Local", null, true, !_gizmoType.HasFlag(.SCALE)))
{
if (_gizmoMode == .WORLD)
_gizmoMode = .LOCAL;
else
_gizmoMode = .WORLD;
}
ImGui.EndMenuBar();
}
}
private void DrawImGuizmo(ImGui.Vec2 viewportSize)
{
ImGuizmo.SetOrthographic(false);
ImGuizmo.SetDrawlist();
var topLeft = ImGui.GetWindowPos();
@@ -85,28 +139,34 @@ namespace GlitchyEditor.EditWindows
topLeft.y += cntMin.y;
ImGuizmo.SetRect(topLeft.x, topLeft.y, viewportSize.x, viewportSize.y);
var cameraTransformCmp = _editor.CurrentCamera.GetComponent<TransformComponent>();
var cameraTransformCmp = _editor.CurrentScene.ActiveCamera.GetComponent<TransformComponent>();
var view = cameraTransformCmp.WorldTransform.Invert();
var cameraCmp = _editor.CurrentCamera.GetComponent<CameraComponent>();
var projection = cameraCmp.Camera.Projection;
Matrix mat = .Identity;
ImGuizmo.DrawGrid((.)&view, (.)&projection, (.)&mat, 10);
if(_editor.EntityHierarchyWindow.SelectedEntities.Count == 0)
return;
if(_editor.EntityHierarchyWindow.SelectedEntities.Count > 0)
var entity = _editor.EntityHierarchyWindow.SelectedEntities.Back;
var transformCmp = entity.GetComponent<TransformComponent>();
var worldTransform = transformCmp.WorldTransform;
Matrix parentView = .Identity;
if (transformCmp.Parent != .InvalidEntity)
{
var entity = _editor.EntityHierarchyWindow.SelectedEntities.Front;
var parentTransformCmp = Entity(transformCmp.Parent, entity.Scene).GetComponent<TransformComponent>();
parentView = parentTransformCmp.WorldTransform.Invert();
}
var transformCmp = entity.GetComponent<TransformComponent>();
var transform = transformCmp.LocalTransform;
ImGuizmo.SetRect(topLeft.x, topLeft.y, viewportSize.x, viewportSize.y);
ImGuizmo.Manipulate((.)&view, (.)&projection, .TRANSLATE, .LOCAL, (.)&transform);
transformCmp.LocalTransform = transform;
if (ImGuizmo.Manipulate((.)&view, (.)&projection, _gizmoType, _gizmoMode, (.)&worldTransform))
{
// TODO: Fix when parent is scaled
// Seems to work fine for parent rotation and translation but scaled parent ruins everything
// (probably because scaling a rotated matrix results in a skewed matrix, but unity can do it, so should we)
transformCmp.LocalTransform = parentView * worldTransform;
}
}
}