GR3

DRAWABLE_GKS = 2

DRAWABLE_OPENGL = 1

ERROR_CAMERA_NOT_INITIALIZED = 7

ERROR_CANNOT_OPEN_FILE = 9

ERROR_EXPORT = 10

ERROR_INIT_FAILED = 3

ERROR_INVALID_ATTRIBUTE = 2

ERROR_INVALID_VALUE = 1

ERROR_MESSAGES = ["none", "invalid value", "invalid attribute", "init failed", "OpenGL error", "out of memory", "not initialized", "camera not initialized", "unknown file extension", "cannot open file", "export failed"]

ERROR_MUTEX = Mutex.new

ERROR_NONE = 0

ERROR_NOT_INITIALIZED = 6

ERROR_OPENGL_ERR = 4

ERROR_OUT_OF_MEM = 5

ERROR_UNKNOWN_FILE_EXTENSION = 8

IA_END_OF_LIST = 0

IA_FRAMEBUFFER_HEIGHT = 2

IA_FRAMEBUFFER_WIDTH = 1

IA_NUM_THREADS = 3

QUALITY_OPENGL_16X_SSAA = 16

QUALITY_OPENGL_2X_SSAA = 2

QUALITY_OPENGL_4X_SSAA = 4

QUALITY_OPENGL_8X_SSAA = 8

QUALITY_OPENGL_NO_SSAA = 0

QUALITY_POVRAY_16X_SSAA = 17

QUALITY_POVRAY_2X_SSAA = 3

QUALITY_POVRAY_4X_SSAA = 5

QUALITY_POVRAY_8X_SSAA = 9

QUALITY_POVRAY_NO_SSAA = 1

SURFACE_DEFAULT = 0

SURFACE_FLAT = 2

SURFACE_GRCOLOR = 8

SURFACE_GRTRANSFORM = 4

SURFACE_GRZSHADED = 16

SURFACE_NORMALS = 1

cameralookat(camera_x, camera_y, camera_z, center_x, center_y, center_z, up_x, up_y, up_z)

check_error!(clear = 1)

createheightmapmesh(heightmap, num_columns, num_rows)

createindexedmesh(number_of_vertices, vertices, normals, colors, number_of_indices, indices)

createindexedmesh_nocopy(number_of_vertices, vertices, normals, colors, number_of_indices, indices)

createisosurfacemesh(data, isolevel, dim_x, dim_y, dim_z, stride_x, stride_y, stride_z, step_x, step_y, step_z, offset_x, offset_y, offset_z)

createmesh(n, vertices, normals, colors)

createmesh_nocopy(n, vertices, normals, colors)

createsurface3dmesh(ncols, nrows, px, py, pz)

createsurfacemesh(nx, ny, px, py, pz, option)

createtubemesh(n, points, colors, radii, num_steps, num_segments)

createxslicemesh(data, ix, dim_x, dim_y, dim_z, stride_x, stride_y, stride_z, step_x, step_y, step_z, offset_x, offset_y, offset_z)

createyslicemesh(data, iy, dim_x, dim_y, dim_z, stride_x, stride_y, stride_z, step_x, step_y, step_z, offset_x, offset_y, offset_z)

createzslicemesh(data, iz, dim_x, dim_y, dim_z, stride_x, stride_y, stride_z, step_x, step_y, step_z, offset_x, offset_y, offset_z)

deletemesh(mesh)

drawconemesh(n, positions, directions, colors, radii, lengths)

drawcubemesh(n, positions, directions, ups, colors, scales)

drawcylindermesh(n, positions, directions, colors, radii, lengths)

drawheightmap(heightmap, num_columns, num_rows, positions, scales)

drawimage(xmin, xmax, ymin, ymax, width, height, drawable_type)

drawmesh(mesh, n, positions, directions, ups, colors, scales)

drawmesh_grlike(mesh, n, positions, directions, ups, colors, scales)

drawmolecule(n, positions, colors, radii, bond_radius, bond_color, bond_delta)

drawspheremesh(n, positions, colors, radii)

drawspins(n, positions, directions, colors, cone_radius, cylinder_radius, cone_height, cylinder_height)

drawsurface(mesh)

drawtrianglesurface(n, triangles)

drawtubemesh(n, points, colors, radii, num_steps, num_segments)

drawxslicemesh(data, ix, dim_x, dim_y, dim_z, stride_x, stride_y, stride_z, step_x, step_y, step_z, offset_x, offset_y, offset_z)

drawyslicemesh(data, iy, dim_x, dim_y, dim_z, stride_x, stride_y, stride_z, step_x, step_y, step_z, offset_x, offset_y, offset_z)

drawzslicemesh(data, iz, dim_x, dim_y, dim_z, stride_x, stride_y, stride_z, step_x, step_y, step_z, offset_x, offset_y, offset_z)

export(filename, width, height)

free(pointer)

getalphamode(mode)

getcameraprojectionparameters(vfov, znear, zfar)

getclipping(xmin, xmax, ymin, ymax, zmin, zmax)

geterror(clear, line, file)

geterrorstring(error)

getimage(width, height, use_alpha, pixels)

getimage(width, height, use_alpha = true)

getlightparameters(ambient, diffuse, specular, specular_power)

getlightsources(max_num_lights, positions, colors)

getviewmatrix(m)

init(attrib_list = nil)

isosurface(nx, ny, nz, data, isovalue, color, strides)

save(filename, width, height)

selectid(x, y, width, height, selection_id)

setalphamode(mode)

setbackgroundcolor(red, green, blue, alpha)

setcameraprojectionparameters(vertical_field_of_view, znear, zfar)

setclipping(xmin, xmax, ymin, ymax, zmin, zmax)

setlightdirection(x, y, z)

setlightparameters(ambient, diffuse, specular, specular_power)

setlightsources(num_lights, positions, colors)

setlogcallback(log_func)

setobjectid(id)

setorthographicprojection(left, right, bottom, top, znear, zfar)

setprojectiontype(type)

setquality(quality)

setsurfaceoption(option)

setviewmatrix(m)

surface(nx, ny, px, py, pz, option)

triangulate(data, isolevel, dim_x, dim_y, dim_z, stride_x, stride_y, stride_z, step_x, step_y, step_z, offset_x, offset_y, offset_z, triangles_p)

triangulateindexed(data, isolevel, dim_x, dim_y, dim_z, stride_x, stride_y, stride_z, step_x, step_y, step_z, offset_x, offset_y, offset_z, num_vertices, vertices, normals, num_indices, indices)

useframebuffer(framebuffer)

volume(nx, ny, nz, data, algorithm, dmin_ptr, dmax_ptr)

volume_2pass(nx, ny, nz, data, algorithm, dmin_ptr, dmax_ptr, context)