Lighthouse3d.com

Title: Terrain Generator

Latest Version: 1.2.5

Author: Antnio Ramires Fernandes

Downloads:

  • Win32 exe: tgwin.zip (89K)
  • Sources (win32 and linux) : tgsource.zip (30K)
  • Example TGA images: tgimages.zip (122K)

    		•
    Requirements: GLUI v2 (only to build the sources), GLUT, OpenGL.

    Note: you may need to edit the makefile in Linux to set the paths for your system.

    Features:

    Version 1.2.5:

  • Terrain smoothing with matrix filters

    • Version 1.2:

  • Particle deposition algorithm for terrain generation
  • Terrain smoothing
  • simple water plane

    • Version 1.1:

  • Added the mid point displacement algorithm for terrain generation

    • Version 1.0:

  • Algorithms for terrain generation: Fault and Circles
  • GLUI interface.
  • Full control over the parameters.
  • Two navigation modes: Examine and Fly.
  • OpenGL window grabber.
  • Save the height map as a TGA image.
  • Load a TGA image (non-compressed, and no index colors) and build the height map.

    • Very Short Users Manual (for more information see the Terrain Tutorial):

    Terrain Module:

  • Image: input the file name of a non-compressed RGB(A) or Greyscale TGA image. A height map will be built using the image data.
  • Generate: takes a width and height and generates a flat terrain

  • Surface Type: Choose between Triangles and Quads.
  • Surface Mode: Wireframe or Solid
  • Surface Lighting: OpenGL, Simulated, or Off
  • Surface Normals: if checked normals will be generated for the height map

  • Scale Heights: set the minimum and maximum height for the surface.
  • Scale Heights Apply: Apply the height scale.
  • Scale Heights Reset: Set the minimum height to 0 and the maximum height to 20

  • Show water plane: shows a blue horizontal plane.
  • Height: set the height of the water plane

  • Screen Shot: Grabs the OpenGL and saves it as a TGA image. Filenames are given sequentially, 3dtechscreenxxx, where xxx starts at 0.
  • Save as TGA: Convert the height field to a TGA image
    		•

  • Iterate
  • Function: select the function for terrain generation
  • Random Seed: random seeds only take effect when a new terrain is generated
  • Max. Disp: Selects the maximum displacement, i.e. the displacement for the first iteration
  • Min. Disp: Select the mimimum displacement
  • Interval: The displacement will decrease from max disp to min disp over a number of iterations, this field specifies that number of iterations. After the number of iterations is reached the displacement will be equal to the minimum displacement
  • Wave Size: Only valid for Fault-Sine and Fault-Cosine. It is the amplitude of the function. The larger the smoother the terrain.
  • Circle Size: Only valid for the circles algorithm. It is the radius of the circle
  • Sticking Particles: sets the particle mode. If checked the particles will stick where they are deposited, otherwise they will roll to form a smoother surface
  • Add. iterations: input here a number of iterations to add to the current total
  • it done: displays the number of iterations to date
  • Show: if checked it will show every iteration, otherwise you'll only see the results in the end.
  • Start: adds the number of iterations in "Add. iterations" to the total counter and starts iterating
  • Stop: stops the terrain generation
  • Roughness: determines the general look of the terrain, 1 is the default value. Higher values create rougher terrains.
  • Steps: The number of steps for the midpoint displacement algorithm. This determines the size of the terrain, so if the step is n, the terrain will be 2^n+1. For instance for n = 7, will end up with a terrain 129x129.
  • Roughness: sets the roughness of the surface for the midpoint displacement algorithm. Use higher values for rougher surfaces, smaller values will provide a smoother terrain
  • Steps: the number of iterations for the midpoint displacement algorithm. The terrain will be a square with ((2^n)+1) x ((2^n)+1), where n is the number of steps.
  • k: smoothing constant. Varies between 0 and 1. Higher values provide smoother surfaces.
  • Show Filter Options: Opens the Filter Options window

    • Navigation:

  • Examine: Use the GLUI controls
  • Fly: arrows move and rotate the camera, the mouse (button pressed) also changes the orientation. (note: if the mouse button is pressed and you press either up or down you'll move much faster than without the mouse button pressed)

    • Filter Options:

  • Filter: Select one of the predefined filters
  • Go For It!: Apply the filter defined in the matrix
  • Close Me: Close this window
  • The entries in the Matrix panel show the filter to apply. You can edit these values to create your own filters.

    • Z6y ];CƼ.YN%s*[Tlש-Ϭ "AcBёd<)Hu)n4ݛ0cյ~\׷B [튂OX(<~X1C]Kl:/e}ݝ8y6K9fԏu{jS[@O4t<^UմGiׯiZ¹[_Dk- Wf8{PF{F/*T  b ,n[tfQҖñA$xs1 y̧w2B1o5WzN{Ubߦ(avώ\C I5x)&gA{lJċ&cd12h@S=\7K(sRQ`EF@IN ~Ur]mohV(ƷyRL }|dJ!lvKO܁d,^M ’&^z!K0lɆB0I0;crUuq)gYЁTh+Qb$m%鬩,80Ds m2cc=3ϜG㠍E3u8! (IӗOxzVng_(uNIA.D7Q@x'b U'[\?I^{͵у28R~L|qXwSEN#zs;hf=g"^yKϷ@QT.EH?`nVv m?s! U٤0j-BH?6^Y",Ry0C)sg,k;WWļgQ`]F-E_߿o-;܅dygZmc 0P50j3P IAY:h>`O!!鷬,$A SDkJ2.):)JyP%4 N6 擗E''vKgks6xd* F#eNeu[wK .ŕgq/dL^ou\R] |ss]׬ IۀU[wL߫ZN =.";sPdVwmű:bd@^ܵ`$cQz!1'JhBvӛ#H;ׅTNi;Օ<4hd֧$HbբqAk?rDe9_gbxmd%KDC`ŢB4b0܏G|D c%e3(,IdGbGL2 !_B%73w VMf=/JXo+<廉?ѩrZ?~)H)>4f#N<[&p2\-$w{E>KX(Uv^xR.%tWZRmW k+R8^ ,$Y0IM,E`Ueh ֪ jkeZWW uEW fvsqycOrin1R704XX_W_"Uhr=D^(/L!!% e: w7榐"%m"͝G}<? |LR8B " P`VI])U2%$`n >Uхt+[x G6G&ɞ `XfS:;' 58XP>dRL*8`R0V܅LYncKj|F*i^ εTקOrJbt7L٦DBIYnmwC'(҂ qJ&ᵀ?^Q^nNv5@K mK6fu`iT̂*tfԬγx+k^~Wlkܼ~МAbSα7.95.~Z.7>9]yF|*.vˇvrX/ ᕗo~z;C 9 '3$@,]xz;uT=+gjUgu6t <*aˈS"N85.\sNUˇo^&;~'qߴ6]U\Gz~p쮸뫆our۸Jڗ]E0[pE5` .BY i ʃe&}s&{3ryOgK|jy:8 ?v5|,bg[L[aks=&՘(y=^MoΗCD">,+7]$HH:i2h]%rB ǁ G*-u)*y'CVhl9yij37Wcg<Nj8IVAܙs@%t0f>r~dkF;?a':Ѿⶻ lt6&ѥyp@#BϠ@+81i~5va8ӼձE@ΘS!t~vFIar,ޠą(&O24/1D6 z:/ySa8yӛR {L'Q߄#h"?t\IBO~,s؀jGS jR՝pyEEmi蚟x?ur/'}R*J3ےFlb%JD eTE&:PlSv!0Z~. 5߳1%[T=71N?9^0>kJb+I ]0DG>7N\Bċ_兟0gNz17d?@PM]@NlrM`&;k{0f(~f3 \'Y n 3ұۉ  Ds^+yAEx(xo[,o)Yʏ܌{ |r`zIdt@+_'g0lO_B^Aurr5FtC8lΠN8 ga3Х7hcUGk~1 cT'QY+(91Co0 ^@[u\InAS!U$GC ޯ ĸn@R>e_ T8-{ *C+aA ަ9z@8gv%E&As!O Kw9=&CC])#i ۘ^T"6 & pmtRS*N%{4Ԯc#A}A("_, qN'J: J-,Ȥ֭F,,gzzEZ),Çf纘[nWu=OFp\Kn~A{gt{-!k*%b:>7 Wv~]c쨔.ȹDXM6S^\wTz;.Umx֬HV_XWהjpj1|45χ?y 5r^!?ǵMy\ؔǵ59?Hڟ{_δZޔ踯WhDr2W6\\ynAB IZ$xU}w2̐f(| nρd]d%ׂ'% g޴ڲF1Utq&b^HQ {p[ZtP43~VBB]h](pOi;cT0sIRP>"s3_'u6ˍ-gF߃ɬb1TR49[Ka9g?ϞbQ j**B(s-^a9Fq/5ojd6%>ly_qЯQyn]րLؐ BF&p?P/g ۣbg"1ާuH/&8W_5`>bq_[!#rR2 G!S)5f% ^\f#8kO?VUfW%;>%Ozn T*mOCq@2GVSf:g9{{{5ۃPK~cr=ؙ#w~]1 L$ua;Q[|"!^X'ބL94= 7MzZC`r_{ ZomEX3a ҹLP u9XɔA j {L^Yw3Ȃs;#3e0RmPMҲ.TJ,0lg; }5Pwn4o,-&6,l'^$<$I&04 )dAÿ~A|܍+Лk#|QN & @5GtLo0GBj 4Ǘ)(a39M"#D[Rb.;$GZē gSy Q/(a+i:Q/9Mr`zn"k+ݺFDž%6N2N"156[uď_c:9N2D(Sه>\v" Dz]A(S/q69QYŶ4&|8eE1wQ ;@Oww"0rL@IV+~H[:t8;c}, Y +FS04?\mEV?}7Cl`oW6&kVj:;й(k Ѩ8yĀ2spK'S./}^UCyj3RmB74=ߙuX-j5˹'L JNǁh8kky+LMpSd  -O^7S]Ҷ]֭a, i tI=7Z ; $7E슊؟ߡq'GNf&KAo®R0.n~0@ݨi`Jxŷok^E7շ8ݺ3J (龨9RkGabJ('\(CrD4 05]) ZF:u0+|Cd?)3ܐ5j_YWf.8^ƅ33 x5GQ fߢa"W]%#R b'm<^em^I]$.+*0`+^f@gp%hKaCV^Yz%٘ڭҟdW*dx]r8>,OUI$YI8wd[DKP$gh{gȋ IPl LIBDnx† . @J(^y0lJ@H(?6ߧ --ǹq: t 8ҵwpJ-Cmj4 T:Gb[$l/${5ڗ<*YglxH;_\egx]V.Ӗ65RC) xMҢK+ġ"DC'Ϗ`7;~:s;y;p6\:L^׋ݡ{NאxAA]"46D;ra Y>`~ ĺ^%Y6rV.&OE%CDRp-ՐCz-PVMZOQY) o{ E3\@fk<E s2E5[>u:u,2~<9ѹ٠>nQ+Vm%GILDg4С_RVkJyj~bҟJ2!֘ 4;Ա|{j{d(,W3:Gi h bp]Xp%#" =  Ħ$9H}^^mҙ&DM48 R$'w.0J!/GC1QR)fwP>0\5:Ƣ38Z^ LQ5\TB+RrWCrH2O&D!=X)qN2C^I>P).<T@s9pLTBP}zy֑/sW(%\}ٛPewc]T)<4S{Z&`BQ4Lu5yaG5Jp,4`ǖk=J=4c*^!aQKנ#w}8$ZYg4ѐZR%q6ڤk Б}LH\h-=Ft 4}6$aBDi]<)Nl|,Y3.[U Xk%#JϭwP5Y!ְb ѰMN^wmʳu#t^g±1\łqJ^)l NsA.ٛ+Yءl ԀaƯwfuoʦb:MPըޞ1Wm[YC>':ŵ[BWEDQ" 1NFwqm ,!8G/BqY֣E. -XOuܺ!Y#NW78c^j#=F?jШДD&UMDtM[M޺-Er/4並zo7v_5ЕDİYgN:[#dۜ5p;X|2Hi0oqq iÎzBi)6,;6/MQ}: m͞5[id9A}|#d;ݪ9UH>@7p7dA~b-o*E?nt!"TQfMnr{A3lY 8>nm57y-5-eEAC )c]EjUj, S  =غa%e=p=3"O28Z`E竷VdB㬗o3eN' E.QL jT9GT9٨xYhvWh|܍KVPJ>cvY_PxFϭ];XVC*,xZli_+CS ۯtMVUMu d;JP'}H6~'ÌT#\Vм%+mv[lO@M O‡Bv &6!ltH!&}4L/+' ,9P'Y%\?nhrg 9@#avG霽| ̗H[=zr2 }/}jOsJb\'?e;}4GS91؝M{v)39[}ܜZh^7%67sUJzn4X4S=jxmo=sJyR%munh^oS%~,UJ ^zIɿhD>}|}c"l!45d8_nZ"-`jl , ]\`]ŕpq'C q=>6i:>6dJ2n{wXg%|37p$1Tˋ͢ݸb-`'?8uA[٧Y\['{Hmr'w.a: RNh{蟊O9b]koFY~QD^8N>h],@ ņ"U{̐CR P$;CTʒlቀj(_?CS)>)ٯx񫤶.U 0VgJWLÔ79`-&Kf舀 >D(,6^TIGCs z!ҵ[22{+Z)Iڨ6p4l8FZcoRlDYfI%28q1%|0~n;$1ROjvd()HHfSbjT{8␜"'IW'3S֕O0Msj'm"r}r)\ kPRױp>MKK<b[lڧ`vԏvڋwZ:ɚAO^v?gJۧ~!`TTftDfE\SnĠY\ yT\CO cme\_%_Ҵw C~!z'ZP3Gn>qD-? ~VS"?>bEP]o [U۝*|}ZAxo`o)r6屘 (^e{MШW7ºnFm&qޢ GW1LA= E;.wUΞ vIUZ:Qn}XZ6$5i _쑦TS ɾ c=rj8i5{K)dRm(8vM.UCLTdamҀʎoO-e{ p,V$Pki* K6MQ0DBe XlrZr{bXDSbdߝ)N!r$ =M+ G#0T{0iZ5FZK EbgXlqAɵ9z<7{~R7`E\N @ NE@Q@CBpNS&pĴWA q` E Y[Ka`.ӅmmCQXPwXT .,kA }+>dt!쯍/uѳăwb g6c I_TwIsRVTmRxF;>CUmhKmԎLKS^ÛWH]q-_)nBՃvR]`y0E%|SJָ8_ԔtwA$UVA!+:}mgvUuu?Z;4I󤐇Τ(qFw2ɎY-~b<0g3VayDz/d8T5U.I-!l/rt͑EE)v\>$&^_?C+?P(NkuG!Hݻs%w63~q {:^^T?Wك'Ґa#9l8<>`_=̖]&݈i˝prWE^Q\UKj%ZD21,qI!OmB{ZZۀ˜;%a­ ;ٓIIop4,i"azdP6bJy<ȹiLqן.,?^r6>for^변\%yL_aN:|(e;Qa