User-defined virtual interaction space and manipulation of virtual cameras with vectors
The technology disclosed relates to creating user-defined interaction spaces and modalities in a three dimensional (3D) sensor space in response to control gestures. It also relates to controlling virtual cameras in the 3D sensor space using control gestures and manipulating controls of the virtual cameras through the control gestures. In particular, it relates to defining one or more spatial attributes of the interaction spaces and modalities in response to one or more gesture parameters of the control gesture. It also particularly relates to defining one or more visual parameters of a virtual camera in response to one or more gesture parameters of the control gesture.
1. A computer implemented method of interacting with a virtual vector field in a three-dimensional (3D) sensor space, the method including:
defining a vector field at least responsive to curling of fingers of a hand and degrees of freedom between fingers of the curled fingers, wherein the vector field is centered with respect to a fixed point proximate to the hand and magnitude of the vector field is calculated at least in part by a scale of curling of the fingers and degrees of freedom between the fingers;
constructing a virtual sphere along a plurality of points on contour of curled fingers in the 3D sensor space;
extending radially, inward or outward, one or more interaction vectors on the virtual sphere, wherein magnitudes of the interaction vectors are determined by radius of the virtual sphere;
compounding interactions of the vector field with the interaction vectors based on their respective magnitudes, wherein the interactions include at least one of adding, multiplying, or taking dot-product of at least one vector in the vector field and at least one interaction vector; and
providing for display a user manipulable persistent rendering of the constructed virtual sphere, wherein a radius of the persistent rendering of the constructed virtual sphere increases and decreases in proportion to the inward or outward extending of the one or more interaction vectors of the virtual sphere.
2. The computer implemented method of claim 1 , wherein a motion of the displayable rendering varies in proportion to the compounding interactions of the vector field with the one or more interaction vectors of the virtual sphere.
3. A computer implemented method of manipulating virtual objects in a three-dimensional (3D) sensor space, the method including:
creating a virtual vector field in response to a control gesture that makes swirling motions in a 3D sensor space, wherein the virtual vector field is a vortex;
creating a plurality of virtual objects in response to subsequent control gestures that make circular sweeps in the 3D sensor space and define object vectors on respective virtual objects;
compounding interactions of the vector field with the object vectors based on their respective magnitudes, wherein the interactions include at least one of adding, multiplying, or taking dot-product of at least one vector in the vector field and at least one of the object vectors; and
adjusting a whirlpool effect of the vortex on the virtual objects in proportion to the interactions of the vector field and the object vectors to cause the object vectors of the respective virtual objects to bring one or more of the virtual objects closer to a center of the vortex or to push one or more of the virtual objects away from the center of the vortex.
4. The computer implemented method of claim 3 , further comprising;
determining from the plurality of virtual objects a set of virtual objects within the vortex based upon the size of the vortex; and
moving members of the set of virtual objects in unison responsive to the control gesture.
5. The computer implemented method of claim 3 , further comprising determining from a compounding of the size of the vortex and curling of fingers of a hand an appropriate velocity of motion for the virtual objects.
6. The computer implemented method of claim 3 , further comprising determining from a compounding of the size of the vortex and degrees of freedom between fingers of curled fingers of a hand an appropriate velocity of motion for the virtual objects.
7. The computer implemented method of claim 3 , further comprising determining a repulsive vortex in which virtual objects move further apart from one another.
8. A non-transitory computer-readable recording medium having a program recorded thereon for interacting with a virtual vector field in a three-dimensional (3D) sensor space, the program, when executed on a processor, implementing a method comprising:
defining a vector field at least responsive to curling of fingers of a hand and degrees of freedom between fingers of the curled fingers, wherein the vector field is centered with respect to a fixed point proximate to the hand and magnitude of the vector field is calculated at least in part by a scale of curling of the fingers and degrees of freedom between the fingers;
constructing a virtual sphere along a plurality of points on contour of curled fingers in the 3D sensor space;
extending radially, inward or outward, one or more interaction vectors on the virtual sphere, wherein magnitudes of the interaction vectors are determined by radius of the virtual sphere;
compounding interactions of the vector field with the interaction vectors based on their respective magnitudes, wherein the interactions include at least one of adding, multiplying, or taking dot-product of at least one vector in the vector field and at least one interaction vector; and
providing for display a user manipulable persistent rendering of the constructed virtual sphere, wherein a radius of the persistent rendering of the constructed virtual sphere increases and decreases in proportion to the inward or outward extending of the one or more interaction vectors of the virtual sphere.
9. A non-transitory computer-readable recording medium having a program recorded thereon for manipulating virtual objects in a three-dimensional (3D) sensor space, the program, when executed on a processor, implementing a method comprising:
creating a virtual vector field in response to a control gesture that makes swirling motions in a 3D sensor space, wherein the virtual vector field is a vortex;
creating a plurality of virtual objects in response to subsequent control gestures that make circular sweeps in the 3D sensor space and define object vectors on respective virtual objects;
compounding interactions of the vector field with the object vectors based on their respective magnitudes, wherein the interactions include at least one of adding, multiplying, or taking dot-product of at least one vector in the vector field and at least one of the object vectors; and
adjusting a whirlpool effect of the vortex on the virtual objects in proportion to the interactions of the vector field and the object vectors to cause the object vectors of the respective virtual objects to bring one or more of the virtual objects closer to a center of the vortex or to push one or more of the virtual objects away from the center of the vortex.