96 lines
3.0 KiB
Go
96 lines
3.0 KiB
Go
package leap
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import (
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"encoding/json"
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"regexp"
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)
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type Gesture struct {
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Direction []float64 `json:"direction"`
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Duration int `json:"duration"`
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Hands []Hand `json:"hands"`
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ID int `json:"id"`
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Pointables []Pointable `json:"pointables"`
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Position []float64 `json:"position"`
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Speed float64 `json:"speed"`
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StartPosition []float64 `json:"StartPosition"`
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State string `json:"state"`
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Type string `json:"type"`
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}
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type Hand struct {
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Direction []float64 `json:"direction"`
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ID int `json:"id"`
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PalmNormal []float64 `json:"palmNormal"`
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PalmPosition []float64 `json:"PalmPosition"`
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PalmVelocity []float64 `json:"PalmVelocity"`
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R [][]float64 `json:"r"`
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S float64 `json:"s"`
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SphereCenter []float64 `json:"sphereCenter"`
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SphereRadius float64 `json:"sphereRadius"`
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StabilizedPalmPosition []float64 `json:"stabilizedPalmPosition"`
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T []float64 `json:"t"`
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TimeVisible float64 `json:"TimeVisible"`
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}
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type Pointable struct {
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Direction []float64 `json:"direction"`
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HandID int `json:"handId"`
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ID int `json:"id"`
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Length float64 `json:"length"`
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StabilizedTipPosition []float64 `json:"stabilizedTipPosition"`
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TimeVisible float64 `json:"timeVisible"`
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TipPosition []float64 `json:"tipPosition"`
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TipVelocity []float64 `json:"tipVelocity"`
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Tool bool `json:"tool"`
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TouchDistance float64 `json:"touchDistance"`
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TouchZone string `json:"touchZone"`
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}
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type InteractionBox struct {
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Center []int `json:"center"`
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Size []float64 `json:"size"`
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}
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// Base representation returned that holds every other objects
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type Frame struct {
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CurrentFrameRate float64 `json:"currentFrameRate"`
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Gestures []Gesture `json:"gestures"`
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Hands []Hand `json:"hands"`
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ID int `json:"id"`
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InteractionBox InteractionBox `json:"interactionBox"`
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Pointables []Pointable `json:"pointables"`
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R [][]float64 `json:"r"`
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S float64 `json:"s"`
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T []float64 `json:"t"`
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Timestamp int `json:"timestamp"`
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}
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// X returns hand x value
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func (h *Hand) X() float64 {
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return h.PalmPosition[0]
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}
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// Y returns hand y value
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func (h *Hand) Y() float64 {
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return h.PalmPosition[1]
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}
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// Z returns hand z value
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func (h *Hand) Z() float64 {
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return h.PalmPosition[2]
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}
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// ParseFrame converts json data to a Frame
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func (l *LeapMotionDriver) ParseFrame(data []byte) Frame {
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var frame Frame
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json.Unmarshal(data, &frame)
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return frame
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}
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// isAFrame returns true if data contains a frame representation
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func (l *LeapMotionDriver) isAFrame(data []byte) bool {
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match, _ := regexp.Match("currentFrameRate", data)
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return match
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}
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