Created
July 4, 2016 15:52
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GaussSense for Processing Widget #3: creates WebSocket client for GaussSense Desktop
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| import websockets.*; | |
| import processing.serial.*; | |
| import gausstoys.core.*; | |
| //Thresholds for sensing (Unit: Gauss) | |
| final int W = 400; | |
| final int H = 400; | |
| final float LO_PRESENCE_THLD = 3; | |
| final float HI_PRESENCE_THLD = 10; | |
| final float TILT_THLD = 75; | |
| //constant for visualization | |
| final float PIE_R = H * 0.75; | |
| final float SLIDER_H = H/10.; | |
| final float plateR = sqrt(PIE_R*PIE_R+SLIDER_H*SLIDER_H); | |
| //GaussSense | |
| GaussSense gs; | |
| //Websocket | |
| WebsocketClient wsc; | |
| String wsData; | |
| void setup() { | |
| size(400, 400); | |
| //size(400,400) to disable debugger's view | |
| frameRate(25); //fail-safe for most micro-controllers. | |
| //frameRate(100); //is OK for Arduino Leonardo | |
| //frameRate(400); //is OK for teensy2.0 | |
| //setup the canvas | |
| ellipseMode(CENTER); | |
| rectMode(CENTER); | |
| noStroke(); | |
| wsc = new WebsocketClient(this, "ws://localhost:5100"); | |
| // List all available serial ports | |
| //GaussSense.printSerialPortList(); | |
| // Initialize the GaussSense | |
| //gs = new GaussSense(this, GaussSense.GSType.GAUSSSENSE_MINI, 1, 1, Serial.list()[Serial.list().length - 1], 115200); | |
| // Initialize the 2x2 GaussSense Grid | |
| //gs = new GaussSense(this, GaussSense.GSType.GAUSSSENSE_MINI, 2, 2, Serial.list()[Serial.list().length - 1], 115200); | |
| } | |
| void draw() { | |
| background(255); | |
| pushStyle(); | |
| //gs.setUpsampledData2D(W, H, 5); //Get the upsampled magnetic-field image (Upsample rate = 5) | |
| //GData pNorth = gs.getNorthPoint(HI_PRESENCE_THLD); //Get the basic North point | |
| //GData pSouth = gs.getSouthPoint(HI_PRESENCE_THLD); //Get the basic South point | |
| //GData pBipolarMidpoint = gs.getBipolarMidpoint(LO_PRESENCE_THLD); //Get the basic Bi-polar Midpoint | |
| GData pNorth = getNorthPoint(); | |
| GData pSouth = getSouthPoint(); | |
| GData pBipolarMidpoint = getBipolarMidpoint(); | |
| float v1 = 0, v2 = 0, v3 = 0; | |
| //"3. Sensing Tilt" | |
| v1 = pBipolarMidpoint.getPitch(); | |
| v2 = pBipolarMidpoint.getAngle()+3*PI/2; | |
| if (v1>TILT_THLD) v1 = TILT_THLD; | |
| if (v1<-TILT_THLD) v1 = -TILT_THLD; | |
| //==[Alternative ways to use the parameters]== | |
| //float tiltAngle = v1; //range = [-TILT_THLD, TILT_THLD]; | |
| //float tiltDirection = v2; //range = [0, TWO_PI]; | |
| //============================================ | |
| //Draw background | |
| fill((v1<0? lerpColor(color(240, 65, 100), color(0, 165, 210), 0.5-(v1 / (TILT_THLD*2))) : lerpColor(color(0, 165, 210), color(240, 65, 100), 0.5+(v1 / (TILT_THLD*2))))); | |
| rect(W/2., H/2., H, H); | |
| //Draw foreground | |
| pushMatrix(); | |
| translate(W/2., H/2.); | |
| rotate(radians(v1)); | |
| fill(255); | |
| ellipse(0, 0, plateR+4, plateR+4); | |
| fill(52); | |
| ellipse(0, 0, plateR, plateR); | |
| fill(255); | |
| arc(0, 0, PIE_R, PIE_R, 0, PI, PIE); | |
| fill(52); | |
| ellipse(0, 0, PIE_R-SLIDER_H*2, PIE_R-SLIDER_H*2); | |
| popMatrix(); | |
| /* | |
| // Show Debugger's View if window's width > height | |
| if (width*gs.getSensorWidth()>height*gs.getSensorHeight()) { | |
| pushMatrix(); | |
| translate(400, 0); | |
| gs.drawUpsampledData2D(W, H, 5); | |
| stroke(0); | |
| strokeWeight(5); | |
| gs.drawBasicNorthPoint(HI_PRESENCE_THLD, W/10.); | |
| gs.drawBasicSouthPoint(HI_PRESENCE_THLD, W/10.); | |
| gs.drawBasicBipolarMidpoint(LO_PRESENCE_THLD, W/4.); | |
| noFill(); | |
| strokeWeight(2); | |
| rectMode(CENTER); | |
| rect(W/2., H/2., H-1, H-1); | |
| popMatrix(); | |
| } | |
| */ | |
| popStyle(); | |
| } | |
| void keyReleased() { | |
| if (key == ENTER) {//Press Enter for re-calibration | |
| if (gs != null) gs.redoCalibration(); | |
| } | |
| if (key == TAB) {//Press Tab for mode-switching | |
| //no-op | |
| } | |
| } | |
| void webSocketEvent(String msg) { | |
| println(msg); | |
| wsData = msg; | |
| } | |
| GData getNorthPoint() { | |
| if (wsData == null) { | |
| return new GData(); | |
| } | |
| JSONObject north = JSONObject.parse(wsData).getJSONObject("northPoint"); | |
| //JSONObject north = obj.getJSONObject("northPoint"); | |
| return new GData(north.getFloat("x")*W, north.getFloat("y")*H, north.getFloat("intensity"), north.getFloat("angle"), north.getFloat("pitch"), north.getJSONArray("areaArray").getIntArray()); | |
| } | |
| GData getSouthPoint() { | |
| if (wsData == null) { | |
| return new GData(); | |
| } | |
| JSONObject south = JSONObject.parse(wsData).getJSONObject("southPoint"); | |
| return new GData(south.getFloat("x")*W, south.getFloat("y")*H, south.getFloat("intensity"), south.getFloat("angle"), south.getFloat("pitch"), south.getJSONArray("areaArray").getIntArray()); | |
| } | |
| GData getBipolarMidpoint() { | |
| if (wsData == null) { | |
| return new GData(); | |
| } | |
| JSONObject mid = JSONObject.parse(wsData).getJSONObject("bipolarMidpoint"); | |
| return new GData(mid.getFloat("x")*W, mid.getFloat("y")*H, mid.getFloat("intensity"), mid.getFloat("angle"), mid.getFloat("pitch"), mid.getJSONArray("areaArray").getIntArray()); | |
| } | |
| int[] getTagID() { | |
| if (wsData == null) { | |
| int[] tagID = {-128, -128, -128, -128, -128}; | |
| return tagID; | |
| } | |
| return JSONObject.parse(wsData).getJSONArray("tagID").getIntArray(); | |
| } |
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