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TAChart: Avoid double call to SetLength from ValuesInRange for unsorted TCustomChartSource

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git-svn-id: trunk@38659 -
This commit is contained in:
ask 2012-09-15 07:48:48 +00:00
parent 5fc1caeffa
commit 14c82d694e
1 changed files with 21 additions and 14 deletions
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35
components/tachart/tacustomsource.pas
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@ -776,8 +776,23 @@ var
prevImagePos := imagePos;
end;
function EnsureMinLength(AStart, AEnd: Integer): Integer;
var
i: Integer;
v: Double;
begin
prevImagePos := MaxInt;
Result := AStart;
for i := AStart to AEnd do begin
v := AValues[i].FValue;
if InRange(v, AParams.FMin, AParams.FMax) and IsTooClose(v) then continue;
AValues[Result] := AValues[i];
Result += 1;
end;
end;
var
i, j, cnt, start: Integer;
i, cnt, start: Integer;
v: Double;
lo, hi: TChartValueText;
begin
@ -827,21 +842,13 @@ begin
AValues[cnt] := hi;
cnt += 1;
end;
SetLength(AValues, cnt);
if IsSorted or IsValueTextsSorted(AValues, start, cnt - 1) then exit;
SortValuesInRange(AValues, start, cnt - 1);
if aipUseMinLength in AParams.FIntervals.Options then begin
prevImagePos := MaxInt;
j := start;
for i := start to cnt - 1 do begin
v := AValues[i].FValue;
if InRange(v, AParams.FMin, AParams.FMax) and IsTooClose(v) then continue;
AValues[j] := AValues[i];
j += 1;
end;
SetLength(AValues, j);
if not IsSorted and not IsValueTextsSorted(AValues, start, cnt - 1) then begin
SortValuesInRange(AValues, start, cnt - 1);
if aipUseMinLength in AParams.FIntervals.Options then
cnt := EnsureMinLength(start, cnt - 1);
end;
SetLength(AValues, cnt);
end;
function TCustomChartSource.ValuesTotal: Double;