# HG changeset patch
# User Teemu Piippo <teemu@hecknology.net>
# Date 1630264482 -10800
# Node ID f64bfb7f5d26c47b0ff1665a3a505423c0cffb4e
# Parent  a7c720aff97cb190b76346fcb4af6c676199c1cc
added a simple matrix transformation tool

diff -r a7c720aff97c -r f64bfb7f5d26 CMakeLists.txt
--- a/CMakeLists.txt	Sun Aug 29 21:28:08 2021 +0300
+++ b/CMakeLists.txt	Sun Aug 29 22:14:42 2021 +0300
@@ -74,6 +74,7 @@
 	src/tools/basetool.cpp
 	src/tools/selecttool.cpp
 	src/tools/drawtool.cpp
+	src/tools/transformtool.cpp
 )
 set (LDFORGE_HEADERS
 	src/basics.h
@@ -130,6 +131,7 @@
 	src/tools/selecttool.h
 	src/tools/basetool.h
 	src/tools/drawtool.h
+	src/tools/transformtool.h
 )
 set (LDFORGE_FORMS
 	src/document.ui
diff -r a7c720aff97c -r f64bfb7f5d26 src/document.cpp
--- a/src/document.cpp	Sun Aug 29 21:28:08 2021 +0300
+++ b/src/document.cpp	Sun Aug 29 22:14:42 2021 +0300
@@ -25,10 +25,12 @@
 #include "tools/basetool.h"
 #include "tools/drawtool.h"
 #include "tools/selecttool.h"
+#include "tools/transformtool.h"
 
 static const QMetaObject* const toolMetaObjects[] = {
 	&SelectTool::staticMetaObject,
 	&DrawTool::staticMetaObject,
+	&TransformTool::staticMetaObject,
 };
 
 Document::Document(
@@ -148,9 +150,9 @@
 
 void Document::selectionChanged(const QSet<ldraw::id_t>& newSelection)
 {
-	if (this->selectedTool != nullptr)
+	for (BaseTool* tool : this->tools)
 	{
-		this->selectedTool->selectionChanged(newSelection);
+		tool->selectionChanged(newSelection);
 	}
 }
 
diff -r a7c720aff97c -r f64bfb7f5d26 src/tools/transformtool.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/tools/transformtool.cpp	Sun Aug 29 22:14:42 2021 +0300
@@ -0,0 +1,68 @@
+#include <QHBoxLayout>
+#include "model.h"
+#include "modeleditcontext.h"
+#include "linetypes/object.h"
+#include "transformtool.h"
+
+TransformTool::TransformTool(Model* model, QObject* parent) :
+	BaseTool{model, parent},
+	model{model},
+	button{new QPushButton{"Apply"}},
+	widget{new QWidget}
+{
+	widget->setLayout(new QHBoxLayout{widget});
+	widget->layout()->addWidget(&this->matrixEditor);
+	widget->layout()->addWidget(button);
+	connect(button, &QPushButton::clicked, this, &TransformTool::applyButtonClicked);
+}
+
+TransformTool::~TransformTool()
+{
+	delete this->widget;
+	delete this->button;
+}
+
+QString TransformTool::name() const
+{
+	return "Transform";
+}
+
+QString TransformTool::toolTip() const
+{
+	return "Transforms the selection using a matrix";
+}
+
+void TransformTool::selectionChanged(const QSet<ldraw::id_t> &newSelection)
+{
+	this->selection = newSelection;
+}
+
+QWidget* TransformTool::toolWidget()
+{
+	return this->widget;
+}
+
+void TransformTool::applyButtonClicked()
+{
+	Model::EditContext editcontext = this->model->edit();
+	const glm::mat4 matrix = this->matrixEditor.value();
+	for (ldraw::id_t id : this->selection)
+	{
+		const ldraw::Object* object = model->get(id);
+		for (int i = 0; i < object->numPoints(); i += 1)
+		{
+			const ldraw::Property property = ldraw::pointProperty(i);
+			const glm::vec3& vec = matrix * glm::vec4{object->getPoint(i), 1};
+			editcontext.setObjectProperty(id, property, QVariant::fromValue(vec));
+		}
+		QVariant transformMatrix = object->getProperty(ldraw::Property::Transformation);
+		if (not transformMatrix.isNull())
+		{
+			editcontext.setObjectProperty(
+				id,
+				ldraw::Property::Transformation,
+				QVariant::fromValue(matrix * transformMatrix.value<glm::mat4>())
+			);
+		}
+	}
+}
diff -r a7c720aff97c -r f64bfb7f5d26 src/tools/transformtool.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/tools/transformtool.h	Sun Aug 29 22:14:42 2021 +0300
@@ -0,0 +1,23 @@
+#pragma once
+#include <QPushButton>
+#include "basetool.h"
+#include "widgets/matrixeditor.h"
+
+class TransformTool : public BaseTool
+{
+	Q_OBJECT
+public:
+	Q_INVOKABLE TransformTool(Model *model, QObject *parent = nullptr);
+	~TransformTool();
+	virtual QString name() const override;
+	virtual QString toolTip() const override;
+	void selectionChanged(const QSet<ldraw::id_t> &newSelection) override;
+	QWidget *toolWidget() override;
+private:
+	Q_SLOT void applyButtonClicked();
+	Model* const model;
+	MatrixEditor matrixEditor;
+	QPushButton* button;
+	QWidget* widget;
+	QSet<ldraw::id_t> selection;
+};