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Merge pull request #31890 from Calinou/curve-editor-add-snapping

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Implement snapping in the Curve editor
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Rémi Verschelde 2019-09-02 22:12:25 +02:00 committed by GitHub
commit e206050380
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1 changed files with 13 additions and 3 deletions
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16
editor/plugins/curve_editor_plugin.cpp
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@ -167,10 +167,20 @@ void CurveEditor::on_gui_input(const Ref<InputEvent> &p_event) {
_has_undo_data = true;
}
const float curve_amplitude = curve.get_max_value() - curve.get_min_value();
// Snap to "round" coordinates when holding Ctrl.
// Be more precise when holding Shift as well.
float snap_threshold;
if (mm.get_control()) {
snap_threshold = mm.get_shift() ? 0.025 : 0.1;
} else {
snap_threshold = 0.0;
}
if (_selected_tangent == TANGENT_NONE) {
// Drag point
Vector2 point_pos = get_world_pos(mpos);
Vector2 point_pos = get_world_pos(mpos).snapped(Vector2(snap_threshold, snap_threshold * curve_amplitude));
int i = curve.set_point_offset(_selected_point, point_pos.x);
// The index may change if the point is dragged across another one
@ -188,8 +198,8 @@ void CurveEditor::on_gui_input(const Ref<InputEvent> &p_event) {
} else {
// Drag tangent
Vector2 point_pos = curve.get_point_position(_selected_point);
Vector2 control_pos = get_world_pos(mpos);
const Vector2 point_pos = curve.get_point_position(_selected_point);
const Vector2 control_pos = get_world_pos(mpos).snapped(Vector2(snap_threshold, snap_threshold * curve_amplitude));
Vector2 dir = (control_pos - point_pos).normalized();