Revert src_classic/helper-devices.i changes

Author: sakamotch

src_classic/helper-devices.i

@@ -433,13 +433,9 @@ jm_lineart_stroke_path(fz_context *ctx, fz_device *dev_, const fz_path *path,
 	jm_lineart_device *dev = (jm_lineart_device *)dev_;
 	PyObject *out = dev->out;
 	int i;
-	{
-		float scale = sqrtf(ctm.a * ctm.a + ctm.b * ctm.b);
-		if (scale < 1e-9f)
-			scale = sqrtf(ctm.c * ctm.c + ctm.d * ctm.d);
-		if (scale < 1e-9f)
-			scale = 1.0f;
-		dev_pathfactor = scale;
+	dev_pathfactor = 1;
+	if (fz_abs(ctm.a) == fz_abs(ctm.d)) {
+		dev_pathfactor = fz_abs(ctm.a);
 	}
 	trace_device_ctm = ctm; // fz_concat(ctm, trace_device_ptm);
 	path_type = STROKE_PATH;
@@ -453,7 +449,7 @@ jm_lineart_stroke_path(fz_context *ctx, fz_device *dev_, const fz_path *path,
 	DICT_SETITEMSTR_DROP(dev_pathdict, "color", jm_lineart_color(ctx, colorspace, color));
 	DICT_SETITEM_DROP(dev_pathdict, dictkey_width, Py_BuildValue("f", dev_pathfactor * stroke->linewidth));
 	DICT_SETITEMSTR_DROP(dev_pathdict, "lineCap", Py_BuildValue("iii", stroke->start_cap, stroke->dash_cap, stroke->end_cap));
-	DICT_SETITEMSTR_DROP(dev_pathdict, "lineJoin", Py_BuildValue("f", (float)stroke->linejoin));
+	DICT_SETITEMSTR_DROP(dev_pathdict, "lineJoin", Py_BuildValue("f", dev_pathfactor * stroke->linejoin));
 	if (!PyDict_GetItemString(dev_pathdict, "closePath")) {
 		DICT_SETITEMSTR_DROP(dev_pathdict, "closePath", JM_BOOL(0));
 	}