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synced 2025-11-05 12:10:55 +00:00
Curve features
- Ability to set tangents as linear - Indicative min and max values - CurveTexture doesn't need min and max anymore
This commit is contained in:
Marc Gilleron
@@ -43,7 +43,6 @@ CurveEditor::CurveEditor() {
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_tangents_length = 40;
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_dragging = false;
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_has_undo_data = false;
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_world_rect = Rect2(0, 0, 1, 1);
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set_focus_mode(FOCUS_ALL);
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set_clip_contents(true);
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@@ -70,11 +69,15 @@ void CurveEditor::set_curve(Ref<Curve> curve) {
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return;
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if (_curve_ref.is_valid()) {
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_curve_ref->disconnect("changed", this, "_curve_changed");
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_curve_ref->disconnect(CoreStringNames::get_singleton()->changed, this, "_curve_changed");
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_curve_ref->disconnect(Curve::SIGNAL_RANGE_CHANGED, this, "_curve_changed");
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}
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_curve_ref = curve;
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if (_curve_ref.is_valid()) {
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_curve_ref->connect("changed", this, "_curve_changed");
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_curve_ref->connect(CoreStringNames::get_singleton()->changed, this, "_curve_changed");
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_curve_ref->connect(Curve::SIGNAL_RANGE_CHANGED, this, "_curve_changed");
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}
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_selected_point = -1;
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@@ -144,11 +147,13 @@ void CurveEditor::on_gui_input(const Ref<InputEvent> &p_event) {
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Vector2 mpos = mm.get_position();
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if (_dragging && _curve_ref.is_valid()) {
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Curve &curve = **_curve_ref;
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if (_selected_point != -1) {
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if (!_has_undo_data) {
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// Save curve state before dragging points
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_undo_data = _curve_ref->get_data();
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_undo_data = curve.get_data();
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_has_undo_data = true;
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}
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@@ -157,26 +162,25 @@ void CurveEditor::on_gui_input(const Ref<InputEvent> &p_event) {
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Vector2 point_pos = get_world_pos(mpos);
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int i = _curve_ref->set_point_offset(_selected_point, point_pos.x);
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int i = curve.set_point_offset(_selected_point, point_pos.x);
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// The index may change if the point is dragged across another one
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set_hover_point_index(i);
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set_selected_point(i);
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// TODO Get rid of this clamp if zoom is implemented in this editor.
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// This is to prevent the user from loosing a point out of view.
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if (point_pos.y < 0.0)
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point_pos.y = 0.0;
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else if (point_pos.y > 1.0)
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point_pos.y = 1.0;
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if (point_pos.y < curve.get_min_value())
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point_pos.y = curve.get_min_value();
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else if (point_pos.y > curve.get_max_value())
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point_pos.y = curve.get_max_value();
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_curve_ref->set_point_value(_selected_point, point_pos.y);
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curve.set_point_value(_selected_point, point_pos.y);
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//auto_calculate_tangents(i);
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} else {
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// Drag tangent
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Vector2 point_pos = _curve_ref->get_point_pos(_selected_point);
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Vector2 point_pos = curve.get_point_pos(_selected_point);
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Vector2 control_pos = get_world_pos(mpos);
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Vector2 dir = (control_pos - point_pos).normalized();
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@@ -190,13 +194,17 @@ void CurveEditor::on_gui_input(const Ref<InputEvent> &p_event) {
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bool link = !Input::get_singleton()->is_key_pressed(KEY_SHIFT);
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if (_selected_tangent == TANGENT_LEFT) {
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_curve_ref->set_point_left_tangent(_selected_point, tangent);
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if (link && _selected_point != _curve_ref->get_point_count() - 1)
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_curve_ref->set_point_right_tangent(_selected_point, tangent);
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curve.set_point_left_tangent(_selected_point, tangent);
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// Note: if a tangent is set to linear, it shouldn't be linked to the other
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if (link && _selected_point != curve.get_point_count() - 1 && !curve.get_point_right_mode(_selected_point) != Curve::TANGENT_FREE)
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curve.set_point_right_tangent(_selected_point, tangent);
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} else {
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_curve_ref->set_point_right_tangent(_selected_point, tangent);
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if (link && _selected_point != 0)
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_curve_ref->set_point_left_tangent(_selected_point, tangent);
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curve.set_point_right_tangent(_selected_point, tangent);
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if (link && _selected_point != 0 && !curve.get_point_left_mode(_selected_point) != Curve::TANGENT_FREE)
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curve.set_point_left_tangent(_selected_point, tangent);
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}
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}
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}
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@@ -230,25 +238,31 @@ void CurveEditor::on_preset_item_selected(int preset_id) {
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case PRESET_FLAT0:
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curve.add_point(Vector2(0, 0));
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curve.add_point(Vector2(1, 0));
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curve.set_point_right_mode(0, Curve::TANGENT_LINEAR);
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curve.set_point_left_mode(1, Curve::TANGENT_LINEAR);
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break;
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case PRESET_FLAT1:
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curve.add_point(Vector2(0, 1));
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curve.add_point(Vector2(1, 1));
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curve.set_point_right_mode(0, Curve::TANGENT_LINEAR);
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curve.set_point_left_mode(1, Curve::TANGENT_LINEAR);
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break;
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case PRESET_LINEAR:
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curve.add_point(Vector2(0, 0), 0, 1);
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curve.add_point(Vector2(1, 1), 1, 0);
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curve.add_point(Vector2(0, 0));
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curve.add_point(Vector2(1, 1));
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curve.set_point_right_mode(0, Curve::TANGENT_LINEAR);
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curve.set_point_left_mode(1, Curve::TANGENT_LINEAR);
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break;
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case PRESET_EASE_IN:
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curve.add_point(Vector2(0, 0));
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curve.add_point(Vector2(1, 1), 1.4, 0);
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curve.add_point(Vector2(1, 1), (curve.get_max_value() - curve.get_min_value()) * 1.4, 0);
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break;
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case PRESET_EASE_OUT:
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curve.add_point(Vector2(0, 0), 0, 1.4);
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curve.add_point(Vector2(0, 0), 0, (curve.get_max_value() - curve.get_min_value()) * 1.4);
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curve.add_point(Vector2(1, 1));
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break;
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@@ -281,6 +295,18 @@ void CurveEditor::on_context_menu_item_selected(int action_id) {
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case CONTEXT_REMOVE_POINT:
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remove_point(_selected_point);
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break;
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case CONTEXT_LINEAR:
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toggle_linear();
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break;
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case CONTEXT_LEFT_LINEAR:
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toggle_linear(TANGENT_LEFT);
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break;
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case CONTEXT_RIGHT_LINEAR:
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toggle_linear(TANGENT_RIGHT);
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break;
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}
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}
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@@ -291,9 +317,37 @@ void CurveEditor::open_context_menu(Vector2 pos) {
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if (_curve_ref.is_valid()) {
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_context_menu->add_item(TTR("Add point"), CONTEXT_ADD_POINT);
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if (_selected_point >= 0) {
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_context_menu->add_item(TTR("Remove point"), CONTEXT_REMOVE_POINT);
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if (_selected_tangent != TANGENT_NONE) {
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_context_menu->add_separator();
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_context_menu->add_check_item(TTR("Linear"), CONTEXT_LINEAR);
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bool is_linear = _selected_tangent == TANGENT_LEFT ?
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_curve_ref->get_point_left_mode(_selected_point) == Curve::TANGENT_LINEAR :
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_curve_ref->get_point_right_mode(_selected_point) == Curve::TANGENT_LINEAR;
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_context_menu->set_item_checked(CONTEXT_LINEAR, is_linear);
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} else {
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_context_menu->add_separator();
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if (_selected_point > 0) {
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_context_menu->add_check_item(TTR("Left linear"), CONTEXT_LEFT_LINEAR);
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_context_menu->set_item_checked(CONTEXT_LEFT_LINEAR,
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_curve_ref->get_point_left_mode(_selected_point) == Curve::TANGENT_LINEAR);
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}
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if (_selected_point + 1 < _curve_ref->get_point_count()) {
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_context_menu->add_check_item(TTR("Right linear"), CONTEXT_RIGHT_LINEAR);
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_context_menu->set_item_checked(CONTEXT_RIGHT_LINEAR,
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_curve_ref->get_point_right_mode(_selected_point) == Curve::TANGENT_LINEAR);
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}
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}
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}
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_context_menu->add_separator();
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}
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@@ -319,7 +373,7 @@ int CurveEditor::get_point_at(Vector2 pos) const {
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return -1;
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}
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int CurveEditor::get_tangent_at(Vector2 pos) const {
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CurveEditor::TangentIndex CurveEditor::get_tangent_at(Vector2 pos) const {
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if (_curve_ref.is_null() || _selected_point < 0)
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return TANGENT_NONE;
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@@ -369,6 +423,25 @@ void CurveEditor::remove_point(int index) {
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push_undo(prev_data);
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}
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void CurveEditor::toggle_linear(TangentIndex tangent) {
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ERR_FAIL_COND(_curve_ref.is_null());
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Array prev_data = _curve_ref->get_data();
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if (tangent == TANGENT_NONE)
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tangent = _selected_tangent;
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if (tangent == TANGENT_LEFT) {
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bool is_linear = _curve_ref->get_point_left_mode(_selected_point) == Curve::TANGENT_LINEAR;
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_curve_ref->set_point_left_mode(_selected_point, is_linear ? Curve::TANGENT_FREE : Curve::TANGENT_LINEAR);
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} else {
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bool is_linear = _curve_ref->get_point_right_mode(_selected_point) == Curve::TANGENT_LINEAR;
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_curve_ref->set_point_right_mode(_selected_point, is_linear ? Curve::TANGENT_FREE : Curve::TANGENT_LINEAR);
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}
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push_undo(prev_data);
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}
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void CurveEditor::set_selected_point(int index) {
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if (index != _selected_point) {
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_selected_point = index;
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@@ -401,14 +474,23 @@ void CurveEditor::update_view_transform() {
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Vector2 control_size = get_size();
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const real_t margin = 24;
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_world_rect = Rect2(Curve::MIN_X, 0, Curve::MAX_X, 1);
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float min_y = 0;
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float max_y = 1;
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if (_curve_ref.is_valid()) {
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min_y = _curve_ref->get_min_value();
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max_y = _curve_ref->get_max_value();
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}
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Rect2 world_rect = Rect2(Curve::MIN_X, min_y, Curve::MAX_X, max_y - min_y);
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Vector2 wm = Vector2(margin, margin) / control_size;
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_world_rect.position -= wm;
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_world_rect.size += 2.0 * wm;
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wm.y *= (max_y - min_y);
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world_rect.position -= wm;
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world_rect.size += 2.0 * wm;
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_world_to_view = Transform2D();
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_world_to_view.translate(-_world_rect.position - Vector2(0, _world_rect.size.y));
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_world_to_view.scale(Vector2(control_size.x, -control_size.y) / _world_rect.size);
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_world_to_view.translate(-world_rect.position - Vector2(0, world_rect.size.y));
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_world_to_view.scale(Vector2(control_size.x, -control_size.y) / world_rect.size);
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}
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Vector2 CurveEditor::get_tangent_view_pos(int i, TangentIndex tangent) const {
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@@ -509,17 +591,18 @@ void CurveEditor::_draw() {
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const Color grid_color0(0, 0, 0, 0.5);
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const Color grid_color1(0, 0, 0, 0.15);
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draw_line(Vector2(min_edge.x, 0), Vector2(max_edge.x, 0), grid_color0);
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draw_line(Vector2(min_edge.x, curve.get_min_value()), Vector2(max_edge.x, curve.get_min_value()), grid_color0);
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draw_line(Vector2(max_edge.x, curve.get_max_value()), Vector2(min_edge.x, curve.get_max_value()), grid_color0);
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draw_line(Vector2(0, min_edge.y), Vector2(0, max_edge.y), grid_color0);
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draw_line(Vector2(1, max_edge.y), Vector2(1, min_edge.y), grid_color0);
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draw_line(Vector2(max_edge.x, 1), Vector2(min_edge.x, 1), grid_color0);
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const Vector2 grid_step(0.25, 0.5);
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float curve_height = (curve.get_max_value() - curve.get_min_value());
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const Vector2 grid_step(0.25, 0.5 * curve_height);
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for (real_t x = 0; x < 1.0; x += grid_step.x) {
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draw_line(Vector2(x, min_edge.y), Vector2(x, max_edge.y), grid_color1);
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}
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for (real_t y = 0; y < 1.0; y += grid_step.y) {
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for (real_t y = curve.get_min_value(); y < curve.get_max_value(); y += grid_step.y) {
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draw_line(Vector2(min_edge.x, y), Vector2(max_edge.x, y), grid_color1);
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}
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@@ -528,17 +611,30 @@ void CurveEditor::_draw() {
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draw_set_transform_matrix(Transform2D());
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Ref<Font> font = get_font("font", "Label");
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float font_height = font->get_height();
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const Color text_color(1, 1, 1, 0.3);
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draw_string(font, get_view_pos(Vector2(0, 0)), "0.0", text_color);
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{
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// X axis
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float y = curve.get_min_value();
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Vector2 off(0, font_height - 1);
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draw_string(font, get_view_pos(Vector2(0, y)) + off, "0.0", text_color);
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draw_string(font, get_view_pos(Vector2(0.25, y)) + off, "0.25", text_color);
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draw_string(font, get_view_pos(Vector2(0.5, y)) + off, "0.5", text_color);
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draw_string(font, get_view_pos(Vector2(0.75, y)) + off, "0.75", text_color);
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draw_string(font, get_view_pos(Vector2(1, y)) + off, "1.0", text_color);
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}
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draw_string(font, get_view_pos(Vector2(0.25, 0)), "0.25", text_color);
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draw_string(font, get_view_pos(Vector2(0.5, 0)), "0.5", text_color);
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draw_string(font, get_view_pos(Vector2(0.75, 0)), "0.75", text_color);
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draw_string(font, get_view_pos(Vector2(1, 0)), "1.0", text_color);
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draw_string(font, get_view_pos(Vector2(0, 0.5)), "0.5", text_color);
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draw_string(font, get_view_pos(Vector2(0, 1)), "1.0", text_color);
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{
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// Y axis
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float m0 = curve.get_min_value();
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float m1 = 0.5 * (curve.get_min_value() + curve.get_max_value());
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float m2 = curve.get_max_value();
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Vector2 off(1, -1);
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draw_string(font, get_view_pos(Vector2(0, m0)) + off, String::num(m0, 2), text_color);
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draw_string(font, get_view_pos(Vector2(0, m1)) + off, String::num(m1, 2), text_color);
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draw_string(font, get_view_pos(Vector2(0, m2)) + off, String::num(m2, 3), text_color);
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}
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// Draw tangents for current point
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@@ -611,6 +707,12 @@ void CurveEditor::_draw() {
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Vector2 pos = curve.get_point_pos(_hover_point);
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stroke_rect(Rect2(get_view_pos(pos), Vector2(1, 1)).grow(_hover_radius), hover_color);
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}
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// Help text
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if (_selected_point > 0 && _selected_point + 1 < curve.get_point_count()) {
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draw_string(font, Vector2(50, font_height), TTR("Hold Shift to edit tangents individually"), text_color);
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}
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}
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// TODO That should be part of the drawing API...
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