Initial commit

2026-04-29 07:19:21 +03:00
commit 9a8cdfa08a
5964 changed files with 1194660 additions and 0 deletions
@@ -0,0 +1,63 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+.pragma library
+
+function renderSmoothedLine(ctx, trace, renderPos) {
+
+    if (!trace)
+        return renderPos
+
+    if (renderPos >= trace.length)
+        return renderPos
+
+    // Fetch points and draw the initial "dot"
+    var points, tp
+    if (renderPos === 0) {
+        points = trace.points()
+        tp = points[renderPos++]
+        ctx.beginPath()
+        ctx.moveTo(tp.x, tp.y)
+        ctx.lineTo(tp.x, tp.y + 0.000001)
+        ctx.stroke()
+    } else {
+        points = trace.points(renderPos - 1)
+    }
+
+    // Draw smoothed line using quadratic curve
+    var i = 1
+    if (i + 1 < points.length) {
+        var pt1, pt2
+        if (renderPos === 1) {
+            tp = points[i - 1]
+        } else {
+            pt1 = points[i - 1]
+            pt2 = points[i]
+            tp = Qt.point((pt1.x + pt2.x) / 2, (pt1.y + pt2.y) / 2)
+        }
+        ctx.beginPath()
+        ctx.moveTo(tp.x, tp.y)
+        while (i + 1 < points.length) {
+            pt1 = points[i++]
+            pt2 = points[i]
+            tp = Qt.point((pt1.x + pt2.x) / 2, (pt1.y + pt2.y) / 2)
+            ctx.quadraticCurveTo(pt1.x, pt1.y, tp.x, tp.y)
+            ctx.moveTo(tp.x, tp.y)
+        }
+        ctx.stroke()
+    }
+
+    // Draw the remainder of the line
+    if (trace.final) {
+        if (i < points.length) {
+            tp = points[i - 1]
+            ctx.beginPath()
+            ctx.moveTo(tp.x, tp.y)
+            tp = points[i++]
+            ctx.lineTo(tp.x, tp.y)
+            ctx.stroke()
+        }
+    }
+
+    return renderPos + i - 1
+}