Color mixer

[WojTec]

I'm trying implement this tool:

Code:

http://www.design-lib.com/color_tool_mixer.php

I already have this:

Delphi-Quellcode:

type
  TColorArray = array of TColor;

function GetColors(const C1, C2: TColor; Steps: Byte): TColorArray;

function Blend(Color1, Color2: TColor; A: Byte): TColor;  // by R. M. Klever
var
  c1, c2: LongInt;
  r, g, b, v1, v2: byte;
begin
  A:= Round(2.55 * A);
  c1 := ColorToRGB(Color1);
  c2 := ColorToRGB(Color2);
  v1:= Byte(c1);
  v2:= Byte(c2);
  r:= A * (v1 - v2) shr 8 + v2;
  v1:= Byte(c1 shr 8);
  v2:= Byte(c2 shr 8);
  g:= A * (v1 - v2) shr 8 + v2;
  v1:= Byte(c1 shr 16);
  v2:= Byte(c2 shr 16);
  b:= A * (v1 - v2) shr 8 + v2;
  Result := (b shl 16) + (g shl 8) + r;
end;

var
  V, T: Byte;
begin
  SetLength(Result, 0);

  V := 100 div (Steps + 1);
  T := 0;

  while T < 100 do
  begin
    Inc(T, V);

    SetLength(Result, Length(Result) + 1);
    Result[High(Result)] := Blend(C1, C2, T);
  end;
end;

I don't know, don't want to working as expected, F1

[WojTec]

Delphi-Quellcode:

var
  V, T: Byte;
begin
  SetLength(Result, 0);

  V := 100 div (EnsureRange(ASteps, 1, 64) + 1);
  T := V;

  while (T < 100) and (100 - T >= V) do
  begin
    SetLength(Result, Length(Result) + 1);
    Result[High(Result)] := BlendColors(AColor1, AColor2, T);

    Inc(T, V);
  end;
end;

F1

[jaenicke]

Unfortunately you forgot to tell us what does happen instead of what should have happened.

And I do not know where you use this function and how you use this function.

[WojTec]

Did you saw link above? So, generaly thera are 2 colors on input and on output I want to array with n colors between input colors - it mean not full gradient, but just n colors.

[jaenicke]

I understood what you want to do but I have no idea what your problem is. Does the code result in a wrong display? Or do you have a problem when you try to use the code? At the moment I am not at home, I will continue there...

[WojTec]

1. It returns different colors than above script.
2. When steps > 15 then returns more colors than I want (in other words for steps 1-15 array has 1-15 colors, for more steps array hase more colors than should contain, eg for 16 it contains 19 colors or for 64 --> 99).

Maybe my idea is good but imprecise?