Transforming Objects:-
The three main ways to transform
objects in any 3D program is by translating, rotating, and scaling. Translate
simply means “move” or “grab” in this context. One way to transform an object
is by using the manipulator handles. The manipulator is by default three arrows that point in
three different directions. The red arrow points towards the X axis, the green
arrow towards the Y axis, and the blue arrow toward the Z axis. There is a
little compass in the bottom left corner of the 3D view in case you ever need a
reminder. Click and drag on one of colored the arrows to move the object along
that axis. Dragging from the white circle inside the arrows will move the
object in relation to your view. At the bottom of the 3D view, you will see buttons that control the manipulator.
From left to right:
toggle on/off, translate, rotate, scale, and orientation
- The first button that looks like the three axes will toggle the manipulator on and off. This can be helpful if you find it distracting later on.
- The second arrow-shaped button turns on the translate handles, and is selected by default.
- Selecting curve-shaped button will switch the handles to rotation handles, and
- selecting the stick-with-a-square-on-it-shaped button will switch to the scale handles.
we can also SHIFT+click these buttons to use multiple
handles at the same time. we can also manipulate an object using only hotkeys.
Press “g” to grab, “r” to rotate, and “s” to scale. we can constrain the transformation
to an axis by pressing “x”, “y”, or “z” during the transformation. To constrain
to two axes, press SHIFT+ whichever axis you would like to leave out. Left click
to confirm. For example, if we want to move our cube along the ground without
it moving up or down, we would press g + SHIFT+z to move it in any direction
except the Z. similar to this: scaling the cube along the Y axis. You will
notice that the shape is becoming distorted. This is where that Transform
Orientation menu we saw on the last page comes in handy. By default it is set
to “Global”. we can think of global orientation like north, south, east and
west. No matter which direction you are facing, a compass will always point
north. Let’s click on the menu and switch the orientation to “Local”. Now we
can scale the cube much more naturally. The local axes are relative to the
object, similar to left and right. You can also set the orientation to the
objects Normal, Gimbal axis, or the View, but those are not used very frequently.
Most of the time, just we set it back to “Global” to avoid confusion.
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