Method Zoom

camera/orbit_control.go:172–186

Zoom moves the camera closer or farther from the target the specified amount and also updates the camera's orthographic size to match.

(delta float32)

// Zoom moves the camera closer or farther from the target the specified amount
// and also updates the camera's orthographic size to match.
func (oc *OrbitControl) Zoom(delta float32) {

	// Compute direction vector from target to camera
	tcam := oc.cam.Position()
	tcam.Sub(&oc.target)

	// Calculate new distance from target and apply limits
	dist := tcam.Length() * (1 + delta/10)
	dist = math32.Max(oc.MinDistance, math32.Min(oc.MaxDistance, dist))
	tcam.SetLength(dist)

	// Update orthographic size and camera position with new distance
	oc.cam.UpdateSize(tcam.Length())
	oc.cam.SetPositionVec(oc.target.Clone().Add(&tcam))
}

// Pan pans the camera and target the specified amount on the plane perpendicular to the viewing direction.
func (oc *OrbitControl) Pan(deltaX, deltaY float32) {