panda3d.core.Trackball¶

class Trackball¶

Bases: MouseInterfaceNode

Trackball acts like Performer in trackball mode. It can either spin around a piece of geometry directly, or it can spin around a camera with the inverse transform to make it appear that the whole world is spinning.

The Trackball object actually just places a transform in the data graph; parent a Transform2SG node under it to actually transform objects (or cameras) in the world.

Inheritance diagram

__init__(param0: Trackball) → None¶

__init__(name: str) → None

reset() → None¶: Reinitializes all transforms to identity.

getForwardScale() → float¶: Returns the scale factor applied to forward and backward motion. See setForwardScale().

setForwardScale(fwdscale: float) → None¶: Changes the scale factor applied to forward and backward motion. The larger this number, the faster the model will move in response to dollying in and out.

getPos() → LPoint3¶

Return the offset from the center of rotation.

Return type: LPoint3

getX() → float¶

getY() → float¶

getZ() → float¶

setPos(vec: LVecBase3) → None¶: Directly set the offset from the rotational origin.

setPos(x: float, y: float, z: float) → None

setX(x: float) → None¶

setY(y: float) → None¶

setZ(z: float) → None¶

getHpr() → LVecBase3¶

Return the trackball’s orientation.

Return type: LVecBase3

getH() → float¶

getP() → float¶

getR() → float¶

setHpr(hpr: LVecBase3) → None¶: Directly set the mover’s orientation.

setHpr(h: float, p: float, r: float) → None

setH(h: float) → None¶

setP(p: float) → None¶

setR(r: float) → None¶

resetOriginHere() → None¶: Reposition the center of rotation to coincide with the current translation offset. Future rotations will be about the current origin.

moveOrigin(x: float, y: float, z: float) → None¶: Moves the center of rotation by the given amount.

getOrigin() → LPoint3¶

Returns the current center of rotation.

Return type: LPoint3

setOrigin(origin: LVecBase3) → None¶: Directly sets the center of rotation.

setControlMode(control_mode: ControlMode) → None¶: Sets the control mode. Normally this is CM_default, which means each mouse button serves its normal function. When it is CM_truck, CM_pan, CM_dolly, or CM_roll, all of the mouse buttons serve the indicated function instead of their normal function. This can be used in conjunction with some external way of changing modes.

getControlMode() → ControlMode¶

Returns the control mode. See setControlMode().

Return type: ControlMode

setInvert(flag: bool) → None¶: Sets the invert flag. When this is set, the inverse matrix is generated, suitable for joining to a camera, instead of parenting the scene under it.

getInvert() → bool¶: Returns the invert flag. When this is set, the inverse matrix is generated, suitable for joining to a camera, instead of parenting the scene under it.

setRelTo(rel_to: NodePath) → None¶: Sets the NodePath that all trackball manipulations are to be assumed to be relative to. For instance, set your camera node here to make the trackball motion camera relative. The default is the empty path, which means trackball motion is in global space.

getRelTo() → NodePath¶

Returns the NodePath that all trackball manipulations are relative to, or the empty path.

Return type: NodePath

setCoordinateSystem(cs: CoordinateSystem) → None¶: Sets the coordinate system of the Trackball. Normally, this is the default coordinate system. This changes the axes the Trackball manipulates so that the user interface remains consistent across different coordinate systems.

getCoordinateSystem() → CoordinateSystem¶

Returns the coordinate system of the Trackball. See setCoordinateSystem().

Return type: CoordinateSystem

setMat(mat: LMatrix4) → None¶: Stores the indicated transform in the trackball. This is a transform in global space, regardless of the rel_to node.

getMat() → LMatrix4¶

Returns the matrix represented by the trackball rotation.

Return type: LMatrix4

getTransMat() → LMatrix4¶

Returns the actual transform that will be applied to the scene graph. This is the same as getMat(), unless invert is in effect.

Return type: LMatrix4

static getClassType() → TypeHandle¶

Return type: TypeHandle

enum ControlMode¶

enumerator CM_default = 0¶

enumerator CM_truck = 1¶: Normally mouse 1

enumerator CM_pan = 2¶: Normally mouse 2

enumerator CM_dolly = 3¶: Normally mouse 3

enumerator CM_roll = 4¶: Normally mouse 2 + 3