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mesh.pas
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unit mesh;
{$Include opts.inc}
{$mode objfpc}{$H+}
interface
{$DEFINE FASTGZ}
//{$DEFINE TIMER}
{$DEFINE TREFOIL} //use Trefoil Knot as default object (instead of pyramid)
uses
//nifti_foreign,
{$IFDEF DGL} dglOpenGL, {$ELSE DGL} {$IFDEF COREGL}glcorearb, {$ELSE} gl, {$ENDIF} {$ENDIF DGL}
{$IFDEF CTM} ctm_loader, {$ENDIF}
Classes, SysUtils, Forms, Controls, Graphics, Dialogs, strutils, DateUtils,
base64, zstream, LcLIntf, nifti_loader, colorTable, matmath, math,
define_types, nifti_types, fileutil;
const
kMinOverlayIndex = 1;
kMaxOverlays = 256;
kLUTinvisible = 0;
kLUTtranslucent = 50;
kLUTopaque = 100;
type
TSphere = packed record
X: single;
Y: single;
Z: single;
Clr: single;
Radius: single;
end;
TOverlay = record
LUTinvert, AOmap: boolean;
PaintMode: integer;
OpacityPercent: integer;
//LUTvisible: integer; //0=invisible, 1=translucent, 2=opaque
LUTindex,atlasMaxIndex, volumes, CurrentVolume : integer;
LUT: TLUT;
minIntensity, maxIntensity, windowScaledMin, windowScaledMax: single;
filename: string;
isBinary: boolean;
intensity: TFloats;
//next: if loaded as mesh...
faces : TFaces;
vertices: TVertices;
vertexRGBA : TVertexRGBA; //array of TRGBA;
vertexAtlas: TInts; //what atlss regions does this vertex belong to, e.g. [7, 8, 17...] the 3rd vertex belongs to region 17
atlasTransparentFilter: TBools;
atlasHideFilter: TInts; //atlas show these atlas regions, e.g. if [7, 8, 22] then only regions 7,8 and 22 will be visible
end;
TNodePrefs = record //preferences for nodes
minEdge, maxEdge, maxEdgeAbs, minEdgeThresh, maxEdgeThresh, minNodeColor, maxNodeColor, minNodeSize, maxNodeSize,
minNodeThresh, maxNodeThresh, scaleNodeSize, scaleEdgeSize, thresholdNodeFrac: single;
nodeLUTindex , edgeLUTindex: integer;
isNodeThresholdBySize, isNoNegEdge, isNoPosEdge, isNoLeftNodes,isNoRightNodes,isNoNodeWithoutEdge, isNodeColorVaries, isEdgeColorVaries, isEdgeSizeVaries, isEdgeShowNeg, isEdgeShowPos : boolean;
end;
type
TMesh = class
scale, vertexRgbaSaturation, vertexRgbaAlpha : single;
origin, mxV, mnV : TPoint3f;
{$IFDEF COREGL}
vao, vbo, vaoOverlay, vboOverlay: GLuint;
nFacesOverlay: integer;
{$ELSE}
displayList, displayListOverlay : GLuint;
{$ENDIF}
isZDimIsUp, isRebuildList, isBusy, isNode, isFreeSurferMesh, isVisible, isAdditiveOverlay : boolean;
nodePrefs: TNodePrefs;
OpenOverlays, OverlayTransparency, AtlasMaxIndex : integer;
overlay: array [kMinOverlayIndex..kMaxOverlays] of TOverlay;
nodes: array of TSphere;
edges: array of array of Single;
faces : array of TPoint3i;
vertices: array of TPoint3f;
vertexRGBA : array of TRGBA;
vertexAtlas: TInts; //what atlas regions does this vertex belong to, e.g. [7, 8, 17...] the 3rd vertex belongs to region 17
atlasTransparentFilter: TBools;
atlasHideFilter: TInts; //atlas show these atlas regions, e.g. if [7, 8, 22] then only regions 7,8 and 22 will be visible
tempIntensityLUT : TFloats; //only used to load without external files - flushed after LoadOverlay
errorString: string;
//overlay: array of single;
private
function CheckMesh: boolean;
procedure SetOverlayDescriptives(lOverlayIndex: integer);
procedure MinMaxPct(lOverlayIndex, num_v: integer; var mx, mn: single; isExcludeZero: boolean);
procedure SetDescriptives;
{$IFDEF TREFOIL} procedure MakeTrefoil; {$ENDIF}
procedure MakeSphere;
function SetLutIndex(layer:integer): integer;
procedure BuildListCore(Clr: TRGBA; var f: TFaces; var v: TVertices; var vtxRGBA: TVertexRGBA; vRemap: TInts = nil; isWriteToGPU: boolean = true);
//procedure BuildListCore(Clr: TRGBA; var f: TFaces; var v: TVertices; var vtxRGBA: TVertexRGBA; vRemap: TInts = nil);
procedure BuildListPartialAtlas(Clr: TRGBA; vtxRGBA: TVertexRGBA);
procedure BuildList(Clr: TRGBA);
procedure FilterOverlay(c: integer; var f: TFaces; var v: TVertices; var vRGBA: TVertexRGBA);
procedure BuildListOverlay(Clr: TRGBA);
function Load1D(const FileName: string; lOverlayIndex: integer): boolean;
function Load3Do(const FileName: string): boolean;
function Load3ds(const FileName: string): boolean;
function LoadAc(const FileName: string): boolean;
function LoadByu(const FileName: string): boolean;
function LoadAnnot(const FileName: string): boolean;
function LoadNiml(const FileName: string): boolean;
function loadCifti(fnm: string; lOverlayIndex, lSeriesIndex: integer; isLoadCortexLeft: boolean): integer;
function LoadDae(const FileName: string): boolean; //only subset!
function LoadDfs(const FileName: string): boolean;
function LoadDxf(const FileName: string): boolean;
function LoadGcs(const FileName: string): boolean;
function LoadGii(const FileName: string; lOverlayIndex, lOverlayItem: integer; var HasOverlays: boolean): integer;
function LoadGts(const FileName: string): boolean;
function LoadIdtf(const FileName: string): boolean;
function LoadJson(const FileName: string): boolean;
function LoadLwo(const FileName: string): boolean;
function LoadMesh(const FileName: string): boolean;
function LoadMeshAscii(const FileName: string): boolean;
function LoadVoxel2Vertex(const FileName: string; lOverlayIndex: integer): boolean;
function LoadMs3d(const FileName: string): boolean;
//function LoadVbo(const FileName: string): boolean;
function LoadMz3(const FileName: string; lOverlayIndex : integer): boolean;
function LoadPrwm(const FileName: string): boolean;
function LoadObjMni(const FileName: string): boolean;
function LoadOff(const FileName: string): boolean;
function LoadOffBin(const FileName: string): boolean;
function LoadPly2(const FileName: string): boolean;
function CullUnusedVertices(): boolean;
function LoadSrf(const FileName: string): boolean;
function LoadSurf(const FileName: string): boolean;
function LoadTri(const FileName: string): boolean;
function LoadVrml(const FileName: string): boolean;
function LoadWfr(const FileName: string): boolean; //EMSE wireframe
function LoadAsc_Srf(const FileName: string): boolean;
function LoadAsc_Sparse(const FileName: string): boolean;
procedure LoadCtm(const FileName: string);
function LoadDpv(const FileName: string; lOverlayIndex: integer): boolean;
function LoadCol(const FileName: string; lOverlayIndex, lOverlayItem: integer): integer; //AFNI https://afni.nimh.nih.gov/afni/community/board/read.php?1,44391,44410
function LoadAtlasMapCore(lOverlayIndex: integer; intensityLUT: TFloats): string;
function LoadAtlasMap(const FileName: string; lOverlayIndex: integer): boolean;
procedure LoadCurv(const FileName: string; lOverlayIndex: integer);
procedure LoadMeshAsOverlay(const FileName: string; lOverlayIndex: integer);
procedure LoadNii(const FileName: string; lOverlayIndex: integer; lLoadSmooth: boolean);
function LoadCluster(const FileName: string): boolean;
function LoadNodeTxt(const FileName: string): boolean;
procedure LoadNode(const FileName: string; out isEmbeddedEdge: boolean);
procedure LoadNv(const FileName: string);
procedure LoadObj(const FileName: string);
//procedure LoadFreeSurferQuad(const FileName: string);
procedure LoadPial(const FileName: string);
procedure LoadPly(const FileName: string);
procedure LoadStl(const FileName: string);
procedure LoadStlAscii(const FileName: string);
function LoadVtkTxt(const FileName: string):boolean;
procedure LoadVtk(const FileName: string);
procedure LoadW(const FileName: string; lOverlayIndex: integer);
public
OverlappingOverlaysOverwrite: boolean;
procedure MakePyramid;
//function AtlasStatMapCore(AtlasName, StatName: string; Indices: TInts; Intensities: TFloats): string;
//function AtlasMaxIndex: integer;
procedure DrawGL (Clr: TRGBA; clipPlane: TPoint4f; isFlipMeshOverlay: boolean);
procedure Node2Mesh;
procedure ReverseFaces;
procedure CenterOrigin;
procedure SwapYZ;
procedure SwapZY;
function LoadFromFile(const FileName: string): boolean;
function LoadEdge(const FileName: string; isEmbeddedEdge: boolean): boolean;
function LoadOverlay(const FileName: string; lLoadSmooth: boolean): boolean;
procedure CloseOverlaysCore;
procedure CloseOverlays;
function Atlas2Node(const FileName: string):boolean;
procedure Close;
constructor Create;
(*procedure SaveVrml(const FileName: string; MeshColor: TColor = clWhite);
procedure SaveMz3(const FileName: string; MeshColor: TColor = clWhite);
procedure SaveGii(const FileName: string);
procedure SaveObj(const FileName: string);
procedure SavePly(const FileName: string; MeshColor: TColor = clWhite);*)
procedure SaveMesh(const FileName: string; MeshColor: TColor = clWhite);
procedure SaveOverlay(const FileName: string; OverlayIndex: integer);
destructor Destroy; override;
end;
implementation
uses
mainunit, {$IFDEF FASTGZ}SynZip, {$ENDIF}
meshify_simplify,shaderu, {$IFDEF COREGL} gl_core_3d {$ELSE} gl_legacy_3d {$ENDIF};
(*function TMesh.Atlas2Node(const FileName: string):boolean;
const
kT = chr(9);
label
123;
var
xROI, yROI, zROI, maxRoiDxIdx, nVert, maxROI, nFace, roi, nroiEdges, nroiVerts, nCOGs: integer;
roiEdges, roiVerts: TInts;
isEdge, isVert: TInts;
roiDx, maxRoiDx: double;
COGs: array of TPoint4f; //center of gravity
j, i : integer;
txt: TextFile;
begin
result := false;
nVert := length(vertices);
nFace := length(faces);
maxROI := AtlasMaxIndex;
if (nFace < 1) or (nVert < 3) or (maxROI < 1) or (length(vertexAtlas) <> nVert) then exit;
setlength(COGs, maxROI+1);
setlength(roiEdges, nVert); //list of vertices on edge of ROI
setlength(roiVerts, nVert); //list all vertices in ROI
setlength(isEdge, nVert);
setlength(isVert, nVert);
for i := 0 to maxROI do
COGs[i] := pt4f(0,0,0,0);
nCOGs := 0;
for roi := 0 to maxROI do begin
nroiEdges := 0;
for i := 0 to nVert -1 do begin
isEdge[i] := 0;
isVert[i] := 0;
end;
//fillChar(isEdge,sizeOf(isEdge),0);
//fillChar(isVert,sizeOf(isVert),0);
for i := 0 to (nFace-1) do begin
xROI := vertexAtlas[Faces[i].X];
yROI := vertexAtlas[Faces[i].Y];
zROI := vertexAtlas[Faces[i].Z];
if (xROI <> roi) and (yROI <> roi) and (zROI <> roi) then continue; //this vertex not member of ROI
//roiVerts[nroiVerts] := i;
if (xROI = roi) then isVert[Faces[i].X] := 1;
if (yROI = roi) then isVert[Faces[i].Y] := 1;
if (zROI = roi) then isVert[Faces[i].Z] := 1;
if (xROI = yROI) and (xROI = zROI) then continue; //all members of same ROI
if (xROI = roi) then isEdge[Faces[i].X] := 1;
if (yROI = roi) then isEdge[Faces[i].Y] := 1;
if (zROI = roi) then isEdge[Faces[i].Z] := 1;
nroiEdges := nroiEdges + 1;
end;
if nroiEdges < 1 then continue; //no edges found!
//compute total number of edges, faces...
nroiEdges := 0;
for i := 0 to (nVert-1) do
if isEdge[i] > 0 then begin
roiEdges[nroiEdges] := i;
nroiEdges := nroiEdges + 1;
end;
nroiVerts := 0;
for i := 0 to (nVert-1) do
if isVert[i] > 0 then begin
roiVerts[nroiVerts] := i;
nroiVerts := nroiVerts + 1;
end;
maxRoiDx := -infinity;
maxRoiDxIdx := 0;
for i := 0 to (nroiVerts -1) do begin //compute cost function for each vertex - furtherst from edges
roiDx := 0;
for j := 0 to (nroiEdges - 1) do
roiDx := roiDx + DistanceBetween(vertices[roiVerts[i]], vertices[roiEdges[j]]);
if (roiDx <= maxRoiDx) then continue;
maxRoiDx := roiDx;
maxRoiDxIdx := roiVerts[i];
end;
COGs[nCOGs].x := vertices[maxRoiDxIdx].x;
COGs[nCOGs].y := vertices[maxRoiDxIdx].y;
COGs[nCOGs].z := vertices[maxRoiDxIdx].z;
COGs[nCOGs].w := roi+1;
nCOGs := nCOGs + 1;
end;
if nCOGs < 1 then goto 123;
result := true;
AssignFile(txt, FileName);
rewrite(txt);
for i := 0 to nCOGs-1 do begin
if COGs[i].w < 1 then continue; //label not present
writeln(txt, format('%g%s%g%s%g%s%d%s1', [COGs[i].x,kT,COGs[i].y,kT,COGs[i].z,kT,round(COGs[i].w),kT ]));
end;
CloseFile(txt);
123:
roiEdges := nil;
roiEdges := nil;
COGs := nil;
isVert := nil;
isEdge := nil;
nearestNode := nil;
end; *)
{$DEFINE FXR}
{$IFDEF FXR}
function DistanceBetween(var a,b: TPoint3f): single;
begin
result := sqrt(sqr(a.x-b.x)+sqr(a.y-b.y)+sqr(a.z-b.z));
end;
function AddPt3f(var a,b: TPoint3f): TPoint3f; //create float vector
begin
result.X := a.X + b.X;
result.Y := a.Y + b.Y;
result.Z := a.Z + b.Z;
end;
function TMesh.Atlas2Node(const FileName: string):boolean;
const
kT = chr(9);
label
123;
var
xROI, yROI, zROI, maxRoiDxIdx, nVert, maxROI, nFace, roi, nroiEdges, nroiVerts, nCOGs: integer;
roiEdges, roiVerts: TInts;
isEdge, isVert: TInts;
cogDx, maxCogDX, roiDx, maxRoiDx, dx: single;
vert, cog: TPoint3f;
COGs: array of TPoint4f; //center of gravity
j, i : integer;
txt: TextFile;
{$IFDEF TIMER}startTime : TDateTime;{$ENDIF}
begin
{$IFDEF TIMER}startTime := Now;{$ENDIF}
result := false;
nVert := length(vertices);
nFace := length(faces);
maxROI := AtlasMaxIndex;
//GLForm1.OverlayBox.Caption := 'a'+inttostr(maxROI);
if (nFace < 1) or (nVert < 3) or (maxROI < 1) or (length(vertexAtlas) <> nVert) then exit;
setlength(COGs, maxROI+1);
setlength(roiEdges, nVert); //list of vertices on edge of ROI
setlength(roiVerts, nVert); //list all vertices in ROI
setlength(isEdge, nVert);
setlength(isVert, nVert);
//GLForm1.OverlayBox.Caption := 'b'+inttostr(maxROI);
for i := 0 to maxROI do
COGs[i] := pt4f(0,0,0,0);
nCOGs := 0;
for roi := 0 to maxROI do begin
nroiEdges := 0;
for i := 0 to nVert -1 do begin
isEdge[i] := 0;
isVert[i] := 0;
end;
//fillChar(isEdge,sizeOf(isEdge),0);
//fillChar(isVert,sizeOf(isVert),0);
for i := 0 to (nFace-1) do begin
xROI := vertexAtlas[Faces[i].X];
yROI := vertexAtlas[Faces[i].Y];
zROI := vertexAtlas[Faces[i].Z];
if (xROI <> roi) and (yROI <> roi) and (zROI <> roi) then continue; //this vertex not member of ROI
//roiVerts[nroiVerts] := i;
if (xROI = roi) then isVert[Faces[i].X] := 1;
if (yROI = roi) then isVert[Faces[i].Y] := 1;
if (zROI = roi) then isVert[Faces[i].Z] := 1;
if (xROI = yROI) and (xROI = zROI) then continue; //all members of same ROI
if (xROI = roi) then isEdge[Faces[i].X] := 1;
if (yROI = roi) then isEdge[Faces[i].Y] := 1;
if (zROI = roi) then isEdge[Faces[i].Z] := 1;
nroiEdges := nroiEdges + 1;
end;
if nroiEdges < 1 then continue; //no edges found!
//compute total number of edges, faces...
nroiEdges := 0;
for i := 0 to (nVert-1) do
if isEdge[i] > 0 then begin
roiEdges[nroiEdges] := i;
nroiEdges := nroiEdges + 1;
end;
nroiVerts := 0;
for i := 0 to (nVert-1) do
if isVert[i] > 0 then begin
roiVerts[nroiVerts] := i;
nroiVerts := nroiVerts + 1;
end;
//find center of mass
cog := ptf(0,0,0);
for i := 0 to (nroiVerts -1) do
cog := AddPt3f(cog, vertices[roiVerts[i]]);
cog.x := cog.x / nroiVerts;
cog.y := cog.y / nroiVerts;
cog.z := cog.z / nroiVerts;
maxCogDX := infinity;
maxRoiDx := -infinity;
maxRoiDxIdx := 0;
for i := 0 to (nroiVerts -1) do begin
//compute cost function for each vertex - furtherst from edges
// who on the island has the longest walk to the beach?
roiDx := infinity;
vert := vertices[roiVerts[i]];
for j := 0 to (nroiEdges - 1) do begin
dx := DistanceBetween(vert, vertices[roiEdges[j]]);
if dx < roiDx then
roiDx := dx;
end;
if (roiDx < maxRoiDx) then continue;
cogDx := DistanceBetween(vert, cog);
if (roiDx = maxRoiDx) then begin
if (cogDx > maxCogDx) then continue;
end;
maxCogDx := cogDx;
maxRoiDx := roiDx;
maxRoiDxIdx := roiVerts[i];
end;
//maxRoiDxIdx := roiVerts[random(nroiVerts)];
//maxRoiDxIdx := roiEdges[random(nroiEdges)];
COGs[nCOGs].x := vertices[maxRoiDxIdx].x;
COGs[nCOGs].y := vertices[maxRoiDxIdx].y;
COGs[nCOGs].z := vertices[maxRoiDxIdx].z;
COGs[nCOGs].w := roi+1;
nCOGs := nCOGs + 1;
end;
if nCOGs < 1 then goto 123;
result := true;
AssignFile(txt, FileName);
rewrite(txt);
for i := 0 to nCOGs-1 do begin
if COGs[i].w < 1 then continue; //label not present
writeln(txt, format('%g%s%g%s%g%s%d%s1', [COGs[i].x,kT,COGs[i].y,kT,COGs[i].z,kT,round(COGs[i].w),kT ]));
end;
CloseFile(txt);
{$IFDEF TIMER}GLForm1.Caption := inttostr(MilliSecondsBetween(Now,StartTime)); {$ENDIF}
123:
roiEdges := nil;
roiEdges := nil;
COGs := nil;
isVert := nil;
isEdge := nil;
//nearestNode := nil;
end;
{$ELSE}
function TMesh.Atlas2Node(const FileName: string):boolean;
const
kT = chr(9);
label
123;
var
nVert, maxROI: integer;
COGs, nearestNode: array of TPoint4f; //center of gravity
i, idx : integer;
dx: single;
txt: TextFile;
begin
result := false;
nVert := length(vertices);
maxROI := AtlasMaxIndex;
if (nVert < 3) or (maxROI < 1) or (length(vertexAtlas) <> nVert) then exit;
//vertexAtlas: TInts; //what atlas regions does this vertex belong to, e.g. [7, 8, 17...] the 3rd vertex belongs to region 17
//setlength(mass, maxROI+1);
setlength(COGs, maxROI+1);
for i := 0 to maxROI do
COGs[i] := pt4f(0,0,0,0);
for i := 0 to (nVert -1) do begin
idx := vertexAtlas[i];
COGs[idx].w := COGs[idx].w + 1;
COGs[idx].x := COGs[idx].x + vertices[i].x;
COGs[idx].y := COGs[idx].y + vertices[i].y;
COGs[idx].z := COGs[idx].z + vertices[i].z;
end;
//set center of gravity = mean
for i := 0 to maxROI do begin
COGs[i].x := COGs[i].x / COGs[i].w;
COGs[i].y := COGs[i].y / COGs[i].w;
COGs[i].z := COGs[i].z / COGs[i].w;
end;
//initialize nearest node - infinitely far away from COG
setlength(nearestNode, maxROI+1);
for i := 0 to maxROI do
nearestNode[i] := pt4f(0,0,0,Infinity);
//for each vertex - see if this is closest to COG
for i := 0 to (nVert -1) do begin
idx := vertexAtlas[i];
dx := sqrt( sqr(COGs[idx].x-vertices[i].x) + sqr(COGs[idx].y-vertices[i].y) + sqr(COGs[idx].z-vertices[i].z) );
if (dx >= nearestNode[idx].w) then continue;
nearestNode[idx] := pt4f(vertices[i].x, vertices[i].y, vertices[i].z, dx);
result := true; //at least one node survives
end;
if not result then goto 123;
AssignFile(txt, FileName);
rewrite(txt);
for i := 0 to maxROI do begin
if COGs[i].w < 1 then continue; //label not present
writeln(txt, format('%g%s%g%s%g%s%d%s1', [nearestNode[i].x,kT,nearestNode[i].y,kT,nearestNode[i].z,kT,i,kT ]));
end;
CloseFile(txt);
123:
COGs := nil;
nearestNode := nil;
end;
{$ENDIF}
{$IFDEF FASTGZ}
function ExtractGz(fnm: string; var mStream : TMemoryStream; magic: word = 0): boolean;
//if magic <> 0, then a file that starts with magic will assume to uncompressed
//if magic = 0, a file will be assumed to be uncompressed if first two bytes are not $8B1F
var
gz: TGZRead;
sig: word;
F : File Of byte;
src : array of byte;
cSz : int64; //uncompressed, compressed size
begin
if not fileexists(fnm) then exit(false);
FileMode := fmOpenRead;
Assign (F, fnm);
Reset (F);
cSz := FileSize(F);
sig := 0; //only to hide compiler warning
blockread(F, sig, SizeOf(sig) );
seek(F,0);
//n.b. GZ header/footer is ALWAYS little-endian
{$IFDEF ENDIAN_BIG}
sig := Swap(sig);
{$ENDIF}
if ( ((magic = 0) and (sig <> $8B1F)) or ((magic <> 0) and (sig = magic)) ) then begin //hex: 1F 8B : gzip specific: will reject zlib format
Close (F);
mStream.LoadFromFile(fnm);
exit(true);
end;
setlength(src, cSz);
blockread(f, src[0], cSz );
CloseFile(f);
result := gz.Init(@src[0], cSz);
if not result then begin
src := nil;
exit;
end;
gz.ToStream(mStream, cSz);
src := nil;
gz.ZStreamDone;
end;
{$ELSE}
function ExtractGz(fnm: string; var mStream : TMemoryStream; magic: word = 0): boolean;
const
kChunkSize = 65535;
var
zStream : TGZFileStream;
bytes : array of byte;
i: integer;
begin
zStream := TGZFileStream.create(fnm, gzopenread);
result := (zStream <> nil);
setlength(bytes, kChunkSize);
repeat
i := zStream.read(bytes[0],kChunkSize);
mStream.Write(bytes[0],i) ;
until i < kChunkSize;
zStream.Free;
end;
{$ENDIF}
//{$IFDEF COREGL}
function mixRGBA(c1, c2: TRGBA; frac2: single): TRGBA;
var
frac1: single;
begin
frac2 := ((c2.a * frac2 )/255.0);
frac1 := 1 - frac2;
result.R := round(c1.R*frac1 + c2.R*frac2) ;
result.G := round(c1.G*frac1 + c2.G*frac2);
result.B := round(c1.B*frac1 + c2.B*frac2);
end;
//{$ENDIF}
procedure AddPt4f(var v: TPoint4f; c1,c2,c3: TRGBA); //create float vector
begin
v.X := v.X + c1.r+ c2.r+ c3.r;
v.Y := v.Y + c1.g+ c2.g+ c3.g;
v.Z := v.Z + c1.b+ c2.b+ c3.b;
v.W := v.W + c1.a+ c2.a+ c3.a;
end;
procedure invertDarken(var c: TRGBA; v, mn,mx: single);
var
frac: single;
begin
if (v <= mn) then exit;
if (v >= mx) then begin
c.R := 0;
c.G := 0;
c.B := 0;
exit;
end;
frac := 1.0 - ((v-mn)/(mx-mn));
c.R := round(c.R * frac);
c.G := round(c.G * frac);
c.B := round(c.B * frac);
end;
procedure darken(var c: TRGBA; v, mn,mx: single);
var
frac: single;
begin
if (v >= mx) then exit;
if (v <= mn) then begin
c.R := 0;
c.G := 0;
c.B := 0;
exit;
end;
frac := (v-mn)/(mx-mn);
c.R := round(c.R * frac);
c.G := round(c.G * frac);
c.B := round(c.B * frac);
end;
procedure TMesh.BuildListCore(Clr: TRGBA; var f: TFaces; var v: TVertices; var vtxRGBA: TVertexRGBA; vRemap: TInts = nil; isWriteToGPU: boolean = true);
var
i,volInc, c: integer;
mn, mx, frac: single;
rgb, rgb0: TRGBA;
vRGBA, vRGBAmx :TVertexRGBA;
vNumNeighbor: array of integer;
vSumRGBBA: array of TPoint4f;
isOverlayPainting : boolean = false;
begin
if (length(f) < 1) or (length(v) < 3) then exit;
volInc := 0;
isOverlayPainting := false;
if (OpenOverlays > 0) then //ignore overlays if they are all meshes rather than vertex colors
for c := OpenOverlays downto 1 do
if (overlay[c].OpacityPercent <> kLUTinvisible) and (length(overlay[c].intensity) >= length(v)) then
isOverlayPainting := true;
if (isOverlayPainting) or (length(vtxRGBA) = length(v)) then begin
rgb := RGBA(Clr.R, Clr.G, Clr.B, 0);
setlength(vRGBA, length(v));
if (length(vtxRGBA) = length(v)) then begin
c := round(vertexRgbaAlpha * 255);
if vertexRgbaSaturation >= 1 then begin
for i := 0 to (length(v)-1) do begin
vRGBA[i].r := vtxRGBA[i].r;
vRGBA[i].g := vtxRGBA[i].g;
vRGBA[i].b := vtxRGBA[i].b;
vRGBA[i].a := c;
end;
end else begin
for i := 0 to (length(v)-1) do
vRGBA[i] := desaturateRGBA ( vtxRGBA[i], vertexRgbaSaturation, C);
end;
{$IFDEF COREGL}
//2019: required only when no overlays open - try adjusting transparency of Altas
if (OpenOverlays < 1) and (vertexRGBAAlpha < 1.0) then
for i := 0 to (length(v)-1) do
vRGBA[i] := mixRGBA( Clr, vRGBA[i], vertexRGBAAlpha);
{$ENDIF}
end else begin
for i := 0 to (length(v)-1) do
vRGBA[i] := rgb;
end;
if (OpenOverlays > 0) then begin
if isAdditiveOverlay then begin
setlength(vRGBAmx, length(v));
rgb0 := RGBA(0,0,0,0);
for i := 0 to (length(v)-1) do
vRGBAmx[i] := rgb0;
for c := OpenOverlays downto 1 do begin
if isFreeSurferLUT(overlay[c].LUTindex) then continue; //curve files ALWAYs darken
volInc := length(v) * (overlay[c].currentVolume - 1);
if (not overlay[c].aoMap) and (overlay[c].OpacityPercent <> kLUTinvisible) and (length(overlay[c].intensity) >= length(v)) then begin
frac := overlay[c].OpacityPercent/100;
if (frac > 1) or (frac < 0) then frac := 1;
if overlay[c].windowScaledMax > overlay[c].windowScaledMin then begin
mn := overlay[c].windowScaledMin;
mx := overlay[c].windowScaledMax;
end else begin
mx := overlay[c].windowScaledMin;
mn := overlay[c].windowScaledMax;
end;
if vRemap <> nil then begin //filtered atlas: vertices have been decimated
for i := 0 to (length(v)-1) do begin
rgb := inten2rgb(overlay[c].intensity[vRemap[i]+volInc], mn, mx, overlay[c].LUT, overlay[c].PaintMode);
rgb.A := round(rgb.A * frac);
vRGBAmx[i] := maxRGBA(vRGBAmx[i], rgb);
end; //for i
end else begin
for i := 0 to (length(v)-1) do begin
rgb := inten2rgb(overlay[c].intensity[i+volInc], mn, mx, overlay[c].LUT, overlay[c].PaintMode);
rgb.A := round(rgb.A * frac);
vRGBAmx[i] := maxRGBA(vRGBAmx[i], rgb);
end; //for i
end;
end; //if visible
end; //for c
//next curve files
for c := OpenOverlays downto 1 do begin
if not isFreeSurferLUT(overlay[c].LUTindex) then continue; //only curve files
if (not overlay[c].aoMap) and (overlay[c].OpacityPercent <> kLUTinvisible) and (length(overlay[c].intensity) >= length(v)) then begin
frac := overlay[c].OpacityPercent / 100;
if (frac < 0) or (frac > 1) then frac := 1;
if overlay[c].windowScaledMax > overlay[c].windowScaledMin then begin
mn := overlay[c].windowScaledMin;
mx := overlay[c].windowScaledMax;
end else begin
mx := overlay[c].windowScaledMin;
mn := overlay[c].windowScaledMax;
end;
volInc := length(v) * (overlay[c].currentVolume - 1);
if vRemap <> nil then begin //filtered atlas: vertices have been decimated
for i := 0 to (length(v)-1) do begin
rgb := inten2rgb(overlay[c].intensity[vRemap[i]+volInc], mn, mx, overlay[c].LUT, overlay[c].PaintMode);
rgb.A := round(rgb.A * frac);
vRGBA[i] := blendRGBA(vRGBA[i], rgb);
end; //for i
end else begin
for i := 0 to (length(v)-1) do begin
rgb := inten2rgb(overlay[c].intensity[i+volInc], mn, mx, overlay[c].LUT, overlay[c].PaintMode);
rgb.A := round(rgb.A * frac);
vRGBA[i] := blendRGBA(vRGBA[i], rgb);
end; //for i
end;
end; //if visible
end; //for c
//finally composite
for i := 0 to (length(v)-1) do
vRGBA[i] := blendRGBA(vRGBA[i],vRGBAmx[i]);
end else begin //not additive: mix overlays
{$DEFINE NFX}
{$IFDEF NFX}
//see https://en.wikipedia.org/wiki/Alpha_compositing#Analytical_derivation_of_the_over_operator
if OverlappingOverlaysOverwrite then begin
for i := 0 to (length(v)-1) do
vRGBA[i].A := 0;
for c := OpenOverlays downto 1 do begin
if (not overlay[c].aoMap) and (overlay[c].OpacityPercent <> kLUTinvisible) and (length(overlay[c].intensity) >= length(v)) then begin
frac := overlay[c].OpacityPercent / 100;
if overlay[c].windowScaledMax > overlay[c].windowScaledMin then begin
mn := overlay[c].windowScaledMin;
mx := overlay[c].windowScaledMax;
end else begin
mx := overlay[c].windowScaledMin;
mn := overlay[c].windowScaledMax;
end;
volInc := length(v) * (overlay[c].currentVolume - 1);
if vRemap <> nil then begin //filtered atlas: vertices have been decimated
for i := 0 to (length(v)-1) do begin
rgb := inten2rgb(overlay[c].intensity[vRemap[i]+volInc], mn, mx, overlay[c].LUT, overlay[c].PaintMode);
rgb.A := round(rgb.A * frac);
vRGBA[i] := blendRGBAover(vRGBA[i], rgb);
end; //for i
end else begin
for i := 0 to (length(v)-1) do begin
rgb := inten2rgb(overlay[c].intensity[i+volInc], mn, mx, overlay[c].LUT, overlay[c].PaintMode);
rgb.A := round(rgb.A * frac);
vRGBA[i] := blendRGBAover(vRGBA[i], rgb);
end; //for i
end;
end; //if visible
end; //for c
end else begin
{$ENDIF}
for c := OpenOverlays downto 1 do begin
if (not overlay[c].aoMap) and (overlay[c].OpacityPercent <> kLUTinvisible) and (length(overlay[c].intensity) >= length(v)) then begin
frac := overlay[c].OpacityPercent / 100;
if overlay[c].windowScaledMax > overlay[c].windowScaledMin then begin
mn := overlay[c].windowScaledMin;
mx := overlay[c].windowScaledMax;
end else begin
mx := overlay[c].windowScaledMin;
mn := overlay[c].windowScaledMax;
end;
volInc := length(v) * (overlay[c].currentVolume - 1);
if vRemap <> nil then begin //filtered atlas: vertices have been decimated
for i := 0 to (length(v)-1) do begin
rgb := inten2rgb(overlay[c].intensity[vRemap[i]+volInc], mn, mx, overlay[c].LUT, overlay[c].PaintMode);
rgb.A := round(rgb.A * frac);
vRGBA[i] := blendRGBA(vRGBA[i], rgb);
end; //for i
end else begin
for i := 0 to (length(v)-1) do begin
rgb := inten2rgb(overlay[c].intensity[i+volInc], mn, mx, overlay[c].LUT, overlay[c].PaintMode);
rgb.A := round(rgb.A * frac);
vRGBA[i] := blendRGBA(vRGBA[i], rgb);
end; //for i
end;
end; //if visible
end; //for c
{$IFDEF NFX}
end;
{$ENDIF}
end;
//finish
if (length(vtxRGBA) < 1) then begin //feather edges of overlay
setlength(vNumNeighbor, length(v));
setlength(vSumRGBBA, length(v));
for i := 0 to (length(v)-1) do begin
vNumNeighbor[i] := 0;
vSumRGBBA[i] := pt4f(0,0,0,0);
end;
for i := 0 to (length(f)-1) do begin
AddPt4f(vSumRGBBA[f[i].X], vRGBA[f[i].X], vRGBA[f[i].Y], vRGBA[f[i].Z]);
AddPt4f(vSumRGBBA[f[i].Y], vRGBA[f[i].X], vRGBA[f[i].Y], vRGBA[f[i].Z]);
AddPt4f(vSumRGBBA[f[i].Z], vRGBA[f[i].X], vRGBA[f[i].Y], vRGBA[f[i].Z]);
inc(vNumNeighbor[f[i].X],3);
inc(vNumNeighbor[f[i].Y],3);
inc(vNumNeighbor[f[i].Z],3);
end;
for i := 0 to (length(v)-1) do begin
if (vNumNeighbor[i] > 0) then begin //vertex at edge: neighbors both colored and uncolored v
vRGBA[i].a := round(vSumRGBBA[i].W / vNumNeighbor[i]);
if {(vRGBA[i].a < 255) and} (vRGBA[i].a > 0) then begin
vRGBA[i].r := round( vSumRGBBA[i].X / vNumNeighbor[i]);
vRGBA[i].g := round( vSumRGBBA[i].Y / vNumNeighbor[i]);
vRGBA[i].b := round( vSumRGBBA[i].Z / vNumNeighbor[i]);
end;
end;
end;
vNumNeighbor := nil;
//vNumColorNeighbor := nil;
vSumRGBBA := nil;
end; //end feather edges
(*if (length(vtxRGBA) < 1) then begin //feather edges if regions without overlay have alpha = 0
setlength(vZeroNeighbor, length(v));
for i := 0 to (length(v)-1) do
vZeroNeighbor[i] := false;
for i := 0 to (length(f)-1) do begin
if (vRGBA[f[i].X].A = 0) or (vRGBA[f[i].Y].A = 0) or (vRGBA[f[i].Z].A = 0) then begin
vZeroNeighbor[f[i].X] := true;
vZeroNeighbor[f[i].Y] := true;
vZeroNeighbor[f[i].Z] := true;
end;
end;
for i := 0 to (length(v)-1) do
if(vZeroNeighbor[i]) then
vRGBA[i].a := vRGBA[i].a shr 1; //make edges more transparent
end; //end feather edges
*)
{$IFDEF COREGL} //with new openGL we mix here
mx := 1.0 - OverlayTransparency/100;
if mx < 0 then mx := 0;
if mx > 1 then mx := 1;
//if (OverlayTransparency > 0 ) and (OverlayTransparency <= 100) then
for i := 0 to (length(v)-1) do
vRGBA[i] := mixRGBA( Clr, vRGBA[i], mx);
{$ELSE} //with old GLSL we mix in the shader
if (OverlayTransparency > 0 ) and (OverlayTransparency <= 100) then begin
for i := 0 to (length(v)-1) do
vRGBA[i].a := round( vRGBA[i].a * (1 - (OverlayTransparency /100)) );
end;
{$ENDIF}
end; // if OpenOverlays > 0
{$IFDEF COREGL}
//the purpose of the next loop is to allow us to hide curvature
for c := OpenOverlays downto 1 do begin
volInc := length(v) * (overlay[c].currentVolume - 1);
if isFreeSurferLUT(overlay[c].LUTindex) then begin
for i := 0 to (length(v)-1) do begin
mn := ((overlay[c].intensity[i+volInc] + 1.0) * 0.5); //convert curvature to range 0..1
if (mn < 0) then mn := 0;
if (mn > 1) then mn := 1;
mn := mn * 255.0;
vRGBA[i].A := round(mn);
end;
end;
end; //for c
{$ENDIF}
//aoMap
//GLForm1.Caption := format ('%d %d %d', [length(v), random(888),length(vRGBA)]);
//for i := 0 to (length(v)-1) do
// vRGBA[i].R := 0;
for c := OpenOverlays downto 1 do begin
if (overlay[c].aoMap) and (overlay[c].OpacityPercent <> kLUTinvisible) and (length(overlay[c].intensity) >= length(v)) then begin
if overlay[c].windowScaledMax > overlay[c].windowScaledMin then begin
mn := overlay[c].windowScaledMin;
mx := overlay[c].windowScaledMax;
end else begin
mx := overlay[c].windowScaledMin;
mn := overlay[c].windowScaledMax;
end;
volInc := length(v) * (overlay[c].currentVolume - 1);
if (overlay[c].OpacityPercent < 100) then
mx := ((mx - mn) * (overlay[c].OpacityPercent/100)) + mn;
if (overlay[c].LUTinvert) then begin
if vRemap <> nil then begin //filtered atlas: vertices have been decimated
for i := 0 to (length(v)-1) do
invertDarken(vRGBA[i], overlay[c].intensity[vRemap[i]+volInc], mn,mx);
end else
for i := 0 to (length(v)-1) do
invertDarken(vRGBA[i], overlay[c].intensity[i+volInc], mn,mx);
end else begin
if vRemap <> nil then begin //filtered atlas: vertices have been decimated
for i := 0 to (length(v)-1) do
darken(vRGBA[i], overlay[c].intensity[vRemap[i]+volInc], mn,mx);
end else
for i := 0 to (length(v)-1) do
darken(vRGBA[i], overlay[c].intensity[i+volInc], mn,mx);
end;
{$IFNDEF COREGL}
for i := 0 to (length(v)-1) do
vRGBA[i].A := 255;
{$ENDIF}
end; //for each channel
end; //aoMap
if not isWriteToGPU then begin
setlength(vtxRGBA, length(v));
for i := 0 to (length(v)-1) do
vRGBA[i].a := 255; //opaque
vtxRGBA := Copy(vRGBA, Low(vRGBA), Length(vRGBA));
exit;
end;
{$IFDEF COREGL}
BuildDisplayList(f, v, vRGBA, vao, vbo, Clr);
{$ELSE}
displayList:= BuildDisplayList(f, v, vRGBA);
{$ENDIF}
end else begin
Clr.A := 128; //just a bit less than 50% - only for hiding curvature
setLength(vRGBA,0);
if not isWriteToGPU then exit;
{$IFDEF COREGL}
BuildDisplayList(f, v, vRGBA,vao, vbo, Clr);
{$ELSE}
displayList:= BuildDisplayList(f, v, vRGBA);
{$ENDIF}
end;
end; // BuildListCore()
procedure FilterAtlas(Clr: TRGBA; maxROI: integer; faces: TFaces; vertices: TVertices; vertexAtlas: TInts; vtxRGBA: TVertexRGBA; atlasHideFilter: TInts; atlasTransparentFilter: TBools; var f: TFaces; var v: TVertices; var vRGBA: TVertexRGBA; var vRemap: TInts);
var
i, j, nfOK, nvOK, nFace, nVert: integer;
vOK: array of integer;
filterLUT: array of boolean;
fOK: array of boolean;
begin
nVert := length(vertices);
nFace := length(faces);
if (nVert < 3) or (nFace < 1) or (maxROI < 1) or (length(vertexAtlas) <> nVert) then exit;
setlength(f,nFace);
setlength(v,nVert);
setlength(vRGBA,nVert);
f := copy(faces, 0, maxint);
v := copy(vertices, 0, maxint);
vRGBA := copy(vtxRGBA, 0, maxint);
if (length(atlasTransparentFilter) > 0) and (length(vtxRGBA) = nVert) then begin
for i := 0 to (nVert-1) do begin
j := vertexAtlas[i];
if (j < 1) or (j >= length(atlasTransparentFilter)) then continue;
if atlasTransparentFilter[j] then
vRGBA[i] := Clr;
end;
end;
if (length(atlasHideFilter) < 1) then exit;
//set up lookup table - list of regions that survive
setlength(filterLUT, maxROI+1);
for i := 0 to maxROI do
filterLUT[i] := false; //assume we will not filter these regions
for i := 0 to (length(atlasHideFilter) - 1) do
if (atlasHideFilter[i] > 0) and (atlasHideFilter[i] <= maxROI) then
filterLUT[atlasHideFilter[i]] := true; //filter the specified region
//mark surviving vertices
setlength(vOK, nVert);
nvOK := 0;
for i := 0 to (nVert -1) do
if (vertexAtlas[i] > 0) and (not filterLUT[vertexAtlas[i]]) then begin
vOK[i] := nvOK;
nvOK := nvOK + 1;
end else
vOK[i] := -1; //does not survive
setlength(filterLUT, 0);
//conditionals for unusual situations
if nvOK = 0 then begin //nothing survives
setlength(vOK,0);
setlength(f,0);
setlength(v,0);
setlength(vRGBA,0);
exit;
end;
if (nvOK = nVert) then begin //everything survives
//BuildListCore(Clr, faces, vertices, vtxRGBA); //show complete array
setlength(vOK,0);
exit;
end;
//see how many faces survive
setlength(fOK,nFace);
nfOK := 0;
for i := 0 to (nFace -1) do begin
fOK[i] := (vOK[faces[i].X] >= 0) and (vOK[faces[i].Y] >= 0) and (vOK[faces[i].Z] >= 0);
if fOK[i] then nfOK := nfOK + 1;
end;
//no faces survive
if nvOK = 0 then begin //nothing survives
setlength(vOK,0);
setlength(fOK,0);
exit;
end;
//copy surviving vertices
setlength(v,nvOK);
for i := 0 to (nVert -1) do
if (vOK[i] >= 0) then
v[vOK[i]] := vertices[i];
//copy surviving vertices
setlength(f,nfOK);
j := 0;
for i := 0 to (nFace -1) do
if fOK[i] then begin
f[j].X := vOK[faces[i].X];
f[j].Y := vOK[faces[i].Y];
f[j].Z := vOK[faces[i].Z];
j := j + 1;
end;
//set vertex colors (if loaded)
setlength(vRemap, nVert);