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feat(frontend): stream live gaze points during calibration #96

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103 changes: 59 additions & 44 deletions src/views/DoubleCalibrationRecord.vue
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Original file line number Diff line number Diff line change
Expand Up @@ -202,7 +202,7 @@
</template>

<script>
import axios from 'axios';
import axios from "axios";


export default {
Expand Down Expand Up @@ -233,7 +233,12 @@ export default {
stepperStep: 1,
showStepper: true,
calibrationStarted: false,
loadingConfig: false
loadingConfig: false,

// streaming
lastStreamTime: 0,
streamInterval: 100,
sessionId: "test-session",
};
},
computed: {
Expand Down Expand Up @@ -320,6 +325,8 @@ export default {
},
methods: {
startTraining() {
// this.sessionId = `calib-${Date.now()}`;
this.sessionId = "test-session";
this.showStepper = false;
this.calibrationStarted = true;
},
Expand Down Expand Up @@ -457,48 +464,56 @@ export default {
return distance;
},
drawPoint(x, y, radius) {
const canvas = document.getElementById('canvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight
const ctx = canvas.getContext('2d');
ctx.clearRect(0, 0, canvas.width, canvas.height)
ctx.fillStyle = this.backgroundColor;
ctx.fillRect(0, 0, canvas.width, canvas.height);
//circle
ctx.beginPath();
ctx.strokeStyle = this.pointColor;
ctx.fillStyle = this.pointColor;
ctx.arc(
x,
y,
radius,
0,
Math.PI * 2,
false
);
ctx.stroke();
ctx.fill();
// inner circle
ctx.beginPath();
ctx.strokeStyle = "red";
ctx.fillStyle = "red";
ctx.arc(
x,
y,
this.innerCircleRadius,
0,
Math.PI * 2,
false
);
ctx.stroke();
ctx.fill();
// hollow circumference
ctx.strokeStyle = this.pointColor;
ctx.lineWidth = 1;
ctx.beginPath();
ctx.arc(x, y, this.radius, 0, 2 * Math.PI, false);
ctx.stroke();
},
const canvas = document.getElementById('canvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;

const ctx = canvas.getContext('2d');
ctx.clearRect(0, 0, canvas.width, canvas.height);

ctx.fillStyle = this.backgroundColor;
ctx.fillRect(0, 0, canvas.width, canvas.height);

// outer animated circle
ctx.beginPath();
ctx.strokeStyle = this.pointColor;
ctx.fillStyle = this.pointColor;
ctx.arc(x, y, radius, 0, Math.PI * 2, false);
ctx.stroke();
ctx.fill();

// inner red dot (actual gaze target)
ctx.beginPath();
ctx.strokeStyle = "red";
ctx.fillStyle = "red";
ctx.arc(x, y, this.innerCircleRadius, 0, Math.PI * 2, false);
ctx.stroke();
ctx.fill();

// hollow circumference
ctx.strokeStyle = this.pointColor;
ctx.lineWidth = 1;
ctx.beginPath();
ctx.arc(x, y, this.radius, 0, 2 * Math.PI, false);
ctx.stroke();

// REAL-TIME GAZE STREAMING
const now = Date.now();
if (now - this.lastStreamTime > this.streamInterval) {
this.lastStreamTime = now;

axios.post("/api/session/gaze", {
session_id: this.sessionId,
x: Math.round(x),
y: Math.round(y),
phase: this.currentStep === 1 ? "training" : "validation",
timestamp: now,
}).catch(err => {
console.error("gaze stream failed", err);
});
}
},

async endCalib() {
this.calibPredictionPoints.forEach(element => {
delete element.point_x;
Expand Down