By default, Spacedraw uses a perspective projection. Via the V-menu, you can switch to an orthographic projection.
The view can be changed with single- or multi-touch, and by tilting the device via motion-sensors. Using different fingers, or by simply moving the device, you can change the view while moving the pointer, drawing or modeling. That way you get a 3d-impression of the model, and how you’re changing it in real time.
The lower part of the screen, called view-zone, is destined for the view-operations; its top boundary can be shifted by dragging the touch-area-splitter on the screen's left or right border. For single-touch, there are distinct touch-areas for translating, rotating, and zooming. Using two fingers, you can pan and zoom, or pan and dolly concurrently. Simultaneously, you can orbit or look around by rotating the device.
Most options and commands are available from the V-menu, the others in the “Input” section of the preference-panel.
NEW With steering: tripod, the movement speed depends on the tripod remoteness, with steering: center on the zoom-level.
Zooming magnifies the view by moving the virtual camera forward;
While dollying moves both the camera and the view-center, zooming only moves the camera which results in different subsequent orbiting and panning speed when steering: center is enabled. To zoom, either
While zooming, the zoom-level is displayed in the status-line.
For perspective projection, always a certain distortion occurs; the larger the angle of view, the more. It can be adjusted by holding one finger on the zoom-strip and moving another one on the pan-strip (or the other way round). This changes the angle of view and zooms at the same time to compensate the effect, such that the field of view stays approximately the same .
to reset all view settings, invoke default view
to move the view-center to the tripod-position, invoke look at tripod
to frame the selection / all, tap the view-zone with 2 / 3 fingers (lights are taken into account if they are shown)
to switch to the standard isometric / top / front / left / ... views, use the buttons in the view-panel
To comprehend the construction process, you can enable load view with undo in the preferences.
This works analogously to normal undo; use the undo-view-rim, the green line at the bottom right border. There's also a view-history-list similar to the history-list, just "upside down" (accessed by sliding over the undo-view-rim farther). If redoing the view is possible, there is a blue line above the green one for that; else, there is a white one.
The view-panel lets you save and load custom views, which are saved with the scene file. To delete a view, swipe right on it. The panel contains also buttons for standard views.
To open the panel, slide into the screen over the white/blue line above the green undo-view-rim until it appears.
When you open the panel the first time after a scene is opened that contains saved views, thumbnails of these are created from the current state of the scene; this may take a few seconds during which the screen will be black.