save animated mesh

Community Forums/Showcase/save animated mesh

b32 (Posted 2006) [#1]

This saves the animated ball from the B3D AddAnimSeq example and loads it back. ;----------------------------------------------------------------------------------------------------- ; SaveAnimMesh ;----------------------------------------------------------------------------------------------------- Type iObj Field m End Type Global dindex Global orgmesh ;----------------------------------------------------------------------------------------------------- ; AddAnimSeq Example ;----------------------------------------------------------------------------------------------------- ;Create 3d animation example ;Set up a simple nice looking level Graphics3D 640,480,0,2 camera=CreateCamera() PositionEntity camera,0,12,-12 RotateEntity camera,35,0,0 light=CreateLight(2) PositionEntity light,1000,1000,-1000 ground=CreatePlane(2) EntityAlpha ground,0.5 EntityColor ground,0,0,255 mirror=CreateMirror() ;Lets make a bouncing ball that squashes on impact with the floor. ball=CreateSphere(16) EntityShininess ball,1 EntityColor ball,255,0,0 ; Lets animate him and "record" the 3D animation for later playback bloat#=0 : flatten#=0 : ypos#=10 For frame=1 To 10 ;Drop the ball from height 10 to 2 ypos = ypos - spd# spd#=spd#+.2 PositionEntity ball,0,ypos,0 ScaleEntity ball,1+bloat,1+flatten,1+bloat ;If the ball is low enough make it look increasingly squashed If frame>8 bloat=bloat+1.5 flatten=flatten-.25 Else flatten=flatten+.05 EndIf ;Record the frame! SetAnimKey ball,frame Next ;Now we need to add the frames we've just made to the sequence of "film"! seq = AddAnimSeq(ball,frame-1) ; total number of frames Animate ball,2,0.15 SaveAnimMesh ball, "tester.x" FreeEntity ball ball = iLoadAnimMesh ("tester.x") ;Play it back ping-pong! Animate ball,2,0.15 While Not KeyHit(1) UpdateWorld RenderWorld Flip Wend End ;----------------------------------------------------------------------------------------------------- ; SaveAnimMesh() ;----------------------------------------------------------------------------------------------------- ;saves an animated mesh Function SaveAnimMesh(mesh, filename$) orgmesh = mesh maxframe = AnimLength(mesh) ff = WriteFile(filename$) WriteLine ff, "xof 0302txt 0064" WriteLine ff, " " WriteLine ff, "Header {" WriteLine ff, " 1;" WriteLine ff, " 0;" WriteLine ff, " 1;" WriteLine ff, "}" WriteLine ff, " " FindChildren(mesh) For i.iObj = Each iObj SaveAnimObject(ff, i\m, maxframe) Next Delete Each iObj WriteLine ff, "AnimationSequences {" WriteLine ff, "1; 0; 0;" WriteLine ff, "2; 0; " + maxframe + ";" WriteLine ff, "}" WriteLine ff, " " CloseFile ff End Function ;----------------------------------------------------------------------------------------------------- ; SaveAnimObject() ;----------------------------------------------------------------------------------------------------- ;writes a single object to the file Function SaveAnimObject(ff, mesh, maxframe) If CountSurfaces(mesh) > 0 Then x = CountSurfaces(mesh) UpdateNormals mesh For surfindex = 1 To CountSurfaces(mesh) objectname$ = "Object" + dindex dindex = dindex + 1 ;start mesh WriteLine ff, "Frame frm_" + objectname$ + " {" WriteLine ff, " " WriteLine ff, " FrameTransformMatrix { " WriteLine ff, " 1.000000,0.000000,0.000000,0.000000," WriteLine ff, " 0.000000,1.000000,0.000000,0.000000," WriteLine ff, " 0.000000,0.000000,1.000000,0.000000," WriteLine ff, " 0.000000,0.000000,0.000000,1.000000;" WriteLine ff, "}" WriteLine ff, " " ;get surface surf = GetSurface(mesh, surfindex) numVert = CountVertices(surf) numTris = CountTriangles(surf) ;get texname brush = GetSurfaceBrush(surf) tex = GetBrushTexture(brush) texname$ = TextureName$(tex) If Instr(texname$, "\") > 0 Then test = 1 For i = Len(texname$) To 1 Step -1 If Mid$(texname$, i, 1) = "\" Then test = i: Exit Next texname$ = Mid$(texname$, test + 1, Len(texname$)) End If FreeTexture tex FreeBrush brush WriteLine ff, " Mesh " + objectname$ + " { " ;write vertices WriteLine ff, " " + numVert + ";" For i = 0 To numVert - 1 xx# = VertexX(surf, i) yy# = VertexY(surf, i) zz# = VertexZ(surf, i) WriteLine ff, xx# + ";" + yy# + ";" + zz# + ";," Next ;write triangles WriteLine ff, " " + numTris + ";" For i = 0 To numTris - 1 aa = TriangleVertex(surf, i, 0) bb = TriangleVertex(surf, i, 1) cc = TriangleVertex(surf, i, 2) If i = numTris - 1 Then st$ = ";" Else st$ = "," WriteLine ff, "3;" + aa + "," + bb + "," + cc + ";" + st$ Next ;write material properties WriteLine ff, " " WriteLine ff, "MeshMaterialList {" WriteLine ff, "1;" WriteLine ff, "1;" WriteLine ff, "0;;" WriteLine ff, " " WriteLine ff, "Material {" WriteLine ff, " 1.000000,1.000000,1.000000,1.000000;;" WriteLine ff, " 1.000000;" WriteLine ff, " 0.500000,0.500000,0.500000;;" WriteLine ff, " 0.000000,0.000000,0.000000;;" ;write texture file name If FileType(texname$) = 1 Then WriteLine ff, " TextureFilename {" WriteLine ff, " " + Chr$(34) + texname$ + Chr$(34) + "; }" End If ;close material block WriteLine ff, "}" WriteLine ff, "}" WriteLine ff, " " ;write normals WriteLine ff, "MeshNormals {" WriteLine ff, " " + numVert + ";" ;write normal vertices For i = 0 To numVert - 1 xx# = VertexNX(surf, i) yy# = VertexNY(surf, i) zz# = VertexNZ(surf, i) WriteLine ff, xx# + ";" + yy# + ";" + zz# + ";," Next ;write normal triangles WriteLine ff, " " + numTris + ";" For i = 0 To numTris - 1 aa = TriangleVertex(surf, i, 0) bb = TriangleVertex(surf, i, 1) cc = TriangleVertex(surf, i, 2) If ( i = numTris - 1 ) Then st$ = ";" Else st$ = "," WriteLine ff, "3;" + aa + "," + bb + "," + cc + ";" + st$ Next ;close normals block WriteLine ff, "}" WriteLine ff, " " ;write texture coordinates U,V WriteLine ff, "MeshTextureCoords {" WriteLine ff, " " + numVert + ";" For i = 0 To numVert - 1 If ( i = numVert - 1 ) Then st$ = ";" Else st$ = "," uu# = VertexU(surf, i) vv# = VertexV(surf, i) WriteLine ff, uu# + ";" + vv# + ";" + st$ Next WriteLine ff, " }" ;close mesh block WriteLine ff, " }" WriteLine ff, " " WriteLine ff, "}" WriteLine ff, " " ;start animation block WriteLine ff, "AnimationSet set_" + objectname$ + " {" WriteLine ff, "Animation ani_" + objectname$ + " {" WriteLine ff, "{frm_" + objectname$ + "} " WriteLine ff, " " ;write position data WriteLine ff, "AnimationKey {" WriteLine ff, "2;" WriteLine ff, (maxframe + 0) + ";" For i = 1 To maxframe oldp = GetParent(mesh) iSetAnimTime orgmesh, i EntityParent mesh, 0 WriteLine ff, PositionToString(i, EntityX(mesh), EntityY(mesh), EntityZ(mesh)) EntityParent mesh, oldp Next WriteLine ff, "}" WriteLine ff, " " ;write rotation data WriteLine ff, "AnimationKey {" WriteLine ff, "0;" WriteLine ff, (maxframe + 0) + ";" For i = 1 To maxframe oldp = GetParent(mesh) iSetAnimTime orgmesh, i EntityParent mesh, 0 WriteLine ff, RotationToString(i, EntityPitch(mesh), EntityYaw(mesh), EntityRoll(mesh)) EntityParent mesh, oldp Next WriteLine ff, "}" WriteLine ff, " " ;write scaling data WriteLine ff, "AnimationKey {" WriteLine ff, "1;" WriteLine ff, (maxframe + 0) + ";" For i = 1 To maxframe oldp = GetParent(mesh) iSetAnimTime orgmesh, i EntityParent mesh, 0 WriteLine ff, ScalingToString(i, EntityWidth(mesh), EntityHeight(mesh), EntityDepth(mesh)) EntityParent mesh, oldp Next WriteLine ff, "}" WriteLine ff, " " ;write animation options WriteLine ff, "AnimationOptions {" WriteLine ff , "1;" ;0 = closed (default) 1 = open WriteLine ff , "1; }" ;0 = splines 1 = linear ;close animation block WriteLine ff, "}" WriteLine ff, "}" WriteLine ff, " " Next End If End Function ;----------------------------------------------------------------------------------------------------- ; iLoadAnimMesh() ;----------------------------------------------------------------------------------------------------- ;loads animated mesh and loads "AnimationSequences" block Function iLoadAnimMesh( f$ ) If FileType(f$) <> 1 Then Return 0 mesh = LoadAnimMesh(f$) file = ReadFile( f$ ) Repeat ;scan (text) .x file for the term "animationsequences" ll$ = ReadLine$( file ) If Instr(ll$, "AnimationSequences") > 0 Then ;read from { to } While (Instr(ll$, "}") < 1) ll$ = ReadLine$( file ) If Eof(file) Then Exit If Instr(ll$, ";") > 0 Then cc = Instr(ll$, ";") ll$ = Mid$(ll$, cc + 1, Len(ll$)) cc = Instr(ll$, ";") v1 = Left$(ll$, cc - 1) v2 = Mid$(ll$, cc + 1, Len(ll$)) index = ExtractAnimSeq (mesh, v1, v2) End If Wend End If If Eof(file) Then Exit Until Eof(file) CloseFile file Return mesh End Function ;----------------------------------------------------------------------------------------------------- ; RotationToString$() ;----------------------------------------------------------------------------------------------------- ;convert rotation information to string Function RotationToString$(ptime, iPitch#, iYaw#, iRoll#) ;this code was written by LeadWerks ;http://www.blitzbasic.com/Community/posts.php?topic=51579 sp# = Sin(iYaw / 2) cp# = Cos(iYaw / 2) sy# = Sin(iRoll / 2) cy# = Cos(iRoll / 2) sr# = Sin(iPitch / 2) cr# = Cos(iPitch / 2) w# = + (cr * cp * cy - sr * sp * sy) x# = - (sr * cp * cy - cr * sp * sy) y# = + (cr * sp * cy + sr * cp * sy) z# = - (sr * sp * cy + cr * cp * sy) Return ptime + "; 4; " + w + "," + x + "," + y + "," + z + ";;;" End Function ;----------------------------------------------------------------------------------------------------- ; PositionToString$() ;----------------------------------------------------------------------------------------------------- ;convert position information to string Function PositionToString$(ptime, iX#, iY#, iZ#) Return pTime + "; 3;" + iX + "," + iY + "," + iZ + ";;," End Function ;----------------------------------------------------------------------------------------------------- ; ScalingToString$() ;----------------------------------------------------------------------------------------------------- ;convert scaling information to string Function ScalingToString$(pTime, iWidth#, iHeight#, iDepth#) Return pTime + "; 3;" + iWidth + "," + iHeight + "," + iDepth + ";;," End Function ;----------------------------------------------------------------------------------------------------- ; EntityWidth() ;----------------------------------------------------------------------------------------------------- ;returns width of an entity Function EntityWidth#( mesh ) If MeshWidth(mesh) = 0 Then Return 0 TFormPoint MeshWidth(mesh), 0, 0, mesh, 0 xx# = TFormedX() yy# = TFormedY() zz# = TFormedZ() TFormPoint 0, 0, 0, mesh, 0 xx# = TFormedX()-xx yy# = TFormedY()-yy zz# = TFormedZ()-zz ll# = Sqr(xx * xx + yy * yy + zz * zz) / MeshWidth(mesh) Return ll End Function ;----------------------------------------------------------------------------------------------------- ; EntityHeight() ;----------------------------------------------------------------------------------------------------- ;returns height of an entity Function EntityHeight#( mesh ) If MeshHeight(mesh) = 0 Then Return 0 TFormPoint 0, MeshHeight(mesh), 0, mesh, 0 xx# = TFormedX() yy# = TFormedY() zz# = TFormedZ() TFormPoint 0, 0, 0, mesh, 0 xx# = TFormedX()-xx yy# = TFormedY()-yy zz# = TFormedZ()-zz ll# = Sqr(xx * xx + yy * yy + zz * zz) / MeshHeight(mesh) Return ll End Function ;----------------------------------------------------------------------------------------------------- ; EntityDepth() ;----------------------------------------------------------------------------------------------------- ;returns depth of an entity Function EntityDepth#( mesh ) If MeshDepth(mesh) = 0 Then Return 0 TFormPoint 0, 0, MeshDepth(mesh), mesh, 0 xx# = TFormedX() yy# = TFormedY() zz# = TFormedZ() TFormPoint 0, 0, 0, mesh, 0 xx# = TFormedX()-xx yy# = TFormedY()-yy zz# = TFormedZ()-zz ll# = Sqr(xx * xx + yy * yy + zz * zz) / MeshDepth(mesh) Return ll End Function ;----------------------------------------------------------------------------------------------------- ; iSetAnimTime() ;----------------------------------------------------------------------------------------------------- ;user defined SetAnimTime Function iSetAnimTime( mesh, time# ) If time >= AnimLength(mesh) Then time = AnimLength(mesh) - 0.01 SetAnimTime mesh, time End Function ;----------------------------------------------------------------------------------------------------- ; iEntityPitch() ;----------------------------------------------------------------------------------------------------- ;get entity's pitch Function iEntityPitch#(mesh) imesh = mesh pivot = CreatePivot() pt# = 0 Repeat TurnEntity pivot, EntityPitch(imesh), EntityYaw(imesh), EntityRoll(imesh), 1 imesh = GetParent(imesh) If imesh = 0 Then Exit Forever pt# = EntityPitch(pivot, 0) FreeEntity pivot Return pt# End Function ;----------------------------------------------------------------------------------------------------- ; iEntityYaw() ;----------------------------------------------------------------------------------------------------- ;get entity's yaw Function iEntityYaw#(mesh) imesh = mesh pivot = CreatePivot() Repeat TurnEntity pivot, EntityPitch(imesh), EntityYaw(imesh), EntityRoll(imesh), 1 imesh = GetParent(imesh) If imesh = 0 Then Exit Forever yw# = EntityYaw(pivot, 0) FreeEntity pivot Return yw# End Function ;----------------------------------------------------------------------------------------------------- ; iEntityRoll() ;----------------------------------------------------------------------------------------------------- ;get entity's roll Function iEntityRoll#(mesh) imesh = mesh pivot = CreatePivot() Repeat TurnEntity pivot, EntityPitch(imesh), EntityYaw(imesh), EntityRoll(imesh), 1 imesh = GetParent(imesh) If imesh = 0 Then Exit Forever rl# = EntityRoll(pivot, 0) FreeEntity pivot Return rl# End Function ;----------------------------------------------------------------------------------------------------- ; FindChildren() ;----------------------------------------------------------------------------------------------------- ;store all children to iObj instances Function FindChildren(mesh) i.iObj = New iObj i\m = mesh If CountChildren(mesh) < 1 Then Return For ij = 1 To CountChildren(mesh) g = GetChild(mesh, ij) FindChildren(g) Next End Function

Ross C (Posted 2006) [#2]

Looks great! I'll need to give this a whirl :o)

jfk EO-11110 (Posted 2006) [#3]

Very useful contribution, thanks a lot! How about to add it to the archives.

b32 (Posted 2006) [#4]

Thanks, I posted it here: http://www.blitzbasic.com/codearcs/codearcs.php?code=1740