Fix misleading client error message about offset missimatch in projected tracks

alja · linev · commit d5b1658fdb6e · 2026-06-18T08:02:11.000+02:00
diff --git a/graf3d/eve7/src/REveTrackProjected.cxx b/graf3d/eve7/src/REveTrackProjected.cxx
@@ -317,7 +317,8 @@ Int_t REveTrackProjected::WriteCoreJson(nlohmann::json &j, Int_t rnr_offset)
 {
    Int_t ret = REveTrack::WriteCoreJson(j, rnr_offset);
 
-   j["render_data"]["break_point_size"] = fBreakPoints.size();
+   if (j.contains("render_data"))
+      j["render_data"]["break_point_size"] = fBreakPoints.size();
 
    return ret;
 }

Original file line number	Diff line number	Diff line change
`@@ -317,7 +317,8 @@ Int_t REveTrackProjected::WriteCoreJson(nlohmann::json &j, Int_t rnr_offset)`
`317`	`317`	`{`
`318`	`318`	`Int_t ret = REveTrack::WriteCoreJson(j, rnr_offset);`
`319`	`319`
`320`		`- j["render_data"]["break_point_size"] = fBreakPoints.size();`
	`320`	`+ if (j.contains("render_data"))`
	`321`	`+ j["render_data"]["break_point_size"] = fBreakPoints.size();`
`321`	`322`
`322`	`323`	`return ret;`
`323`	`324`	`}`