added motion trajectory simulation

shared/src/orisys_app_shared/theme/qss.py

@@ -393,6 +393,15 @@ QComboBox:disabled, QLineEdit:disabled, QSpinBox:disabled, QDoubleSpinBox:disabl
     background-color: {c['window_bg']};
     border-color: {c['separator']};
 }}
+/* A field that sits several to a row. The padding above is what makes an input
+   40 px tall rather than 28, which is right for a form and too tall for a grid of
+   paired numbers — the pair rows overflow their cells and clip. Same look,
+   tighter box: opt in with ``setObjectName("compactField")``. */
+QComboBox#compactField, QLineEdit#compactField,
+QSpinBox#compactField, QDoubleSpinBox#compactField {{
+    padding: 1px 4px;
+    min-height: 20px;
+}}
 QComboBox::drop-down {{
     subcontrol-origin: padding;
     subcontrol-position: top right;