Referencia › Terrain — 25 comandos
clearallterrain
Entrada: none
Salida: none
Clears all terrain in all spaces.
clearallterrain
clearterrain
Entrada: none
Salida: none
Clears all terrain defined in the current space. Terrain created by system turtles will only be cleared if clearterrain is called by a system turtle. See setterrain
clearterrain
elevation
Entrada: [x y] (list)
Salida: elevation (number)
Returns the elevation of the terrain at the provided co-ordinates. See setelevation, setterrain
show elevation [10 20]
elevationsnap
Entrada: none
Salida: none
Causes the calling turtle to 'snap' to the center of the current elevation 'sector' determined by the terrainresolution. See noelevationsnap, setterrainresolution, elevationsnapp
elevationsnap
hideterrain
Entrada: none
Salida: none
Hides the terrain in the current space. See showterrain.
hideterrain
lockelevation
Entrada: none
Salida: none
Locks the calling turtle to the elevation of the terrain at the turtle's current xy position. See nolockelevation, elevationsnap
lockelevation
lockelevationmode
Entrada: none
Salida: list
Returns the current value(s) used by setlockelevationmode, which determins its behavior. See setlockelevationmode
show lockelevationmode
noelevationsnap
Entrada: none
Salida: none
Causes the calling turtle to NOT 'snap' to the center of the current elevation 'sector' determined by the terrainresolution. See elevationsnap, setterrainresolution
noelevationsnap
nolockelevation
Entrada: none
Salida: none
Unlocks the calling turtle from the elevation of the terrain at the turtle's current xy position. See lockelevation, elevationsnap
nolockelevation
setelevation
Entrada: [x y elevation] list OR [[x y elevation][x2 y2 elevation2]…]]
Salida: none
Sets the elevation height of the terrain at the specified x and y co-ordinates. If a floor value is set in the terrain impacted by setelevation, the elevation will be set to the floor value if it is greater than the elevation specified, unless the new elevation is provided as a list of a single value. setelevation can also take list of lists. See elevation, setterrain
setelevation [10 20 10]
setterrain
Entrada: [x1 y1 x2 y2] (list) | [height floor ceiling] (list) | seed (number) | algorithm (word) OR [algorithm magnification (octaves)] | style (word)
Salida: none
Creates terrain on the z-plane between the specified x and y co-ordinates. These co-ordinates represent 10 turtle-units, and the output can be scaled using setterrainresolution. height specifies the maximum height in terms of single turtle-units, similarly scaled using setterrainresolution. The floor value specifies the lowest level rendered, and any values lower than that value are rendered at the floor level. Similarly, the ceiling value represents the highest value rendered, and anything higher is lowered to that value. The seed is provided to the algorithm that generates the terrain, the algorithm is the method used (currently only fbm and flat (no algorithm) are supported) and the style (voxel, line, triangle or combo (line and triangle) – note that combo uses the terraininterior color to render its lines). Providing a list containing the algorithm type and a multiplier allow you to 'zoom in' or out on the terrain, making it more dense and complex, or spacious and simple. Multiple blocks of terrain can be defined so long as they do not overlap. See terrain, setterrainresolution, setterraincolors, setterraininterior, setelevation, elevation, lockelevation, elevationsnap, unlockelevation
setterrain [-10 -10 10 10] [25] 25 "fbm "voxel
setterraincolors
Entrada: [[maxelev fillcolor fillshade][maxelev2 fillcolor fillshade]…] (list of lists)
Salida: none
Sets the terrain colors used in subsequent terrain creation. Lower elevations override higher ones. See setterrain, terraincolors
setterraincolors [[10 2 0] [14 4 0] [18 15 0]]
setterraininterior
Entrada: number
Salida: none
Sets the color of the interior of terrain subsequently generated using the setterrain primitive. See setterrain, setterraincolors
setterraininterior brown
setterrainresolution
Entrada: number
Salida: none
Sets the 'resolution' of the terrain, or the size of each 'sector' in turtle-units within the terrain 'grid' which expands out from [0 0]. For example, the higher the terrainresolution is the larger each voxel is in the terrain in the voxel mode, and the more area the terrain covers. See setterrain, terrainresolution
setterrainreolution 5
showterrain
Entrada: none
Salida: none
Shows the terrain. See hideterrain, setterrain
showterrain
terrain
Entrada: none
Salida: list
Returns the parameters provided to the last invocation of the setterrain primitive. See setterrain
show terrain
terraincolors
Entrada: none
Salida: list
Returns the current terrain colors. New terrain generated will use these values. See setterraincolors
show terraincolors
terraininterior
Entrada: none
Salida: number
Returns the current terraininterior value. New terrain generated will use this value. See setterraininterior
show terraininterior
terrainresolution
Entrada: none
Salida: number
Returns the value of the terrainresolution. See terrainresolution, setterrain
show terrainresolution
terrainxy
Entrada: [x y] [height floor ceiling] seed algorithm OR [algorithm magnification]
Salida: number
Returns elevation for given parameters, fixed to global grid (as if the center of the terrain is 0,0). This can be used to generate algorithmic 'noise'. The only current algorithm is fbm. See setterrain
show terrainxy [0 0] [50 0 50] 128 "fbm
terraform
Entrada: none
Salida: none
Enables terraform mode: shapes drawn afterwards have their vertices displaced along their normals by fractal noise, turning smooth shapes into terrain — an icosphere becomes a planet, with vertices at or below sea level clamped flat and taking the pen colour as water. Applies per turtle to any built shape, and is distinct from the terrain family, which sculpts the world's terrain grid rather than individual shapes. Configure with setterraformsettings; noterraform turns the mode off. See noterraform, setterraformsettings, terraformsettings, terraformp
terraform
setterraformsettings [5 42 3 20 0.5 1 0]
icosphere 50
noterraform
Entrada: none
Salida: none
Disables terraform mode: shapes drawn afterwards render normally again. Shapes already drawn while the mode was on keep their terraformed form. See terraform
noterraform
terraformp
Entrada: none
Salida: boolean
Returns true if terraform mode is enabled for the current turtle. See terraform, noterraform
show terraformp
true
setterraformsettings
Entrada: [pointmultiplier seed frequency scale minlevel maxlevel wireframe]
Salida: none
Configures terraform mode with a positional list; a shorter list leaves later values on their current setting. pointmultiplier (1 to 7) sets the point resolution of the built shape — higher gives the noise more vertices to displace; seed seeds the noise so a given landscape is reproducible; frequency sets how many noise cycles fit across the shape; scale sets the elevation as a percentage of the shape's radius; minlevel (0 to 1) is sea level — vertices at or below it clamp flat and take the pen colour as water; maxlevel (0 to 1) plateaus land above it; wireframe (boolean) renders the terraformed shape as a wire mesh. See terraform, terraformsettings
terraform
setterraformsettings [5 42 3 20 0.5 1 0]
icosphere 50
terraformsettings
Entrada: none
Salida: list
Returns the current terraform settings as a seven-value list in setterraformsettings order: pointmultiplier, seed, frequency, scale, minlevel, maxlevel and wireframe. The result can be passed back to setterraformsettings unchanged. See setterraformsettings, terraform
show terraformsettings
[5 42 3 20 0.5 1 0]