The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
vpWindow – multiply the projection matrix by a perspective or orthographic matrix Synopsis #include <volpack.h> vpResult vpWindow(vpc, type, left, right, bottom, top, near, far) vpContext *vpc; int type; double left, right; double bottom, top; double near, far; Arguments vpc VolPack context from vpCreateContext. type Projection type code. Currently, must be VP_PARALLEL. left Coordinate of the…
vpVolumeNormals – compute surface normal vectors and gradient magnitudes for a volume Synopsis #include <volpack.h> vpResult vpVolumeNormals(vpc, scalar_data, length, scalar_field, grad_field, norm_field) vpContext *vpc; unsigned char *scalar_data; int length; int scalar_field; int grad_field; int norm_field; Arguments vpc VolPack context from vpCreateContext. scalar_data 3D array of scalar samples. length Size of scalar_data array in bytes. scalar_field…
vpTranspose – transpose a volume Synopsis #include <volpack.h> vpResult vpTranspose(vpc, axis) vpContext *vpc; int axis; Arguments vpc VolPack context from vpCreateContext. axis Axis which should have the smallest stride after transposing (VP_X_AXIS, VP_Y_AXIS or VP_Z_AXIS). Description vpTranspose is used to transpose the 3D voxel array to optimize the memory stride for a particular principal viewing…
vpTranslate – multiply the current transformation matrix by a translation matrix Synopsis #include <volpack.h> vpResult vpTranslate(vpc, tx, ty, tz) vpContext *vpc; double *tx, *ty, *tz; Arguments vpc VolPack context from vpCreateContext. tx X component of translation vector. ty Y component of translation vector. tz Z component of translation vector. Description vpTranslate is used to multiply…
vpTracePixel – print a trace of the voxels composited into a pixel Synopsis #include <volpack.h> vpResult vpTracePixel(vpc, trace_u, trace_v) vpContext *vpc; int trace_u, trace_v; Arguments vpc VolPack context from vpCreateContext. trace_u, trace_v Intermediate image coordinates of the pixel to trace. Description This routine is for debugging the rendering algorithms. If (trace_u, trace_v) is a valid…
vpStoreRawVolume, vpStoreMinMaxOctree, vpStoreClassifiedVolume, vpStoreContext – store volume data structures to a file Synopsis #include <volpack.h> vpResult vpStoreRawVolume(vpc, fd) vpContext *vpc; int fd; vpResult vpStoreMinMaxOctree(vpc, fd) vpContext *vpc; int fd; vpResult vpStoreClassifiedVolume(vpc, fd) vpContext *vpc; int fd; vpResult vpStoreContext(vpc, fd) vpContext *vpc; int fd; Arguments vpc VolPack context from vpCreateContext. fd File descriptor from open(2), open…
vpShadeTable – compute the contents of the shading lookup table Synopsis #include <volpack.h> vpResult vpShadeTable(vpc) vpContext *vpc; Arguments vpc VolPack context from vpCreateContext. Description vpShadeTable computes the contents of the shading lookup table previously specified with vpLookupShader. For each entry in the table, the Phong shading equation is evaluated using the current lighting properties (as…
vpSeti, vpSetd – set the value of an option Synopsis #include <volpack.h> vpResult vpSeti(vpc, option, value) vpContext *vpc; int option; int value; vpResult vpSetd(vpc, option, value) vpContext *vpc; int option; double value; Arguments vpc VolPack context from vpCreateContext. option Constant that specifies the option to be set. value New value for the option. Description These…
vpSetVoxelSize – define the size of a voxel Synopsis #include <volpack.h> vpResult vpSetVoxelSize(vpc, bytes_per_voxel, num_voxel_fields, num_shade_fields, num_classify_fields) vpContext *vpc; int bytes_per_voxel; int num_voxel_fields; int num_shade_fields; int num_classify_fields; Arguments vpc VolPack context from vpCreateContext. bytes_per_voxel Size of one voxel in bytes. num_voxel_fields Number of fields in a voxel. num_shade_fields Number of voxel fields that are arguments…
vpSetVoxelField, vpFieldOffset – define the size and location of a voxel field Synopsis #include <volpack.h> vpResult vpSetVoxelField(vpc, field_num, field_size, field_offset, field_max) vpContext *vpc; int field_num; int field_size; int field_offset; int field_max; int vpFieldOffset(voxel_ptr, field_name) vpContext *vpc; LITERAL field_name; Arguments vpc VolPack context from vpCreateContext. field_num Field number for the field to define (first field is…
vpSetVolumeSize – define the dimensions of a volume Synopsis #include <volpack.h> vpResult vpSetVolumeSize(vpc, xlen, ylen, zlen) vpContext *vpc; int xlen, ylen, zlen; Arguments vpc VolPack context from vpCreateContext. xlen Size of first dimension of the volume in voxels. ylen Size of the second dimension of the volume in voxels. zlen Size of the third dimension…
vpSetShadowLookupShader – specify shading lookup tables for rendering shadows Synopsis #include <volpack.h> vpResult vpSetShadowLookupShader(vpc, color_channels, num_materials, color_field, color_table, color_table_size, weight_field, weight_table, weight_table_size, shadow_table, shadow_table_size) vpContext *vpc; int color_channels, num_materials; int color_field; float *color_table; int color_table_size; int weight_field; float *weight_table; int weight_table_size; float *shadow_table; int shadow_table_size; Arguments vpc VolPack context from vpCreateContext. color_channels The number of…
vpSetRawVoxels – specify an array of volume data Synopsis #include <volpack.h> vpResult vpSetRawVoxels(vpc, voxels, size, xstride, ystride, zstride) vpContext *vpc; void *voxels; int size; int xstride, ystride, zstride; Arguments vpc VolPack context from vpCreateContext. voxels 3D array of voxels. size Size of the voxel array in bytes. xstride Number of bytes from the beginning of…
vpSetMatrix – load a matrix into the current transformation matrix Synopsis #include <volpack.h> vpResult vpSetMatrix(vpc, m) vpContext *vpc; vpMatrix4 m; Arguments vpc VolPack context from vpCreateContext. m Input matrix. Description vpSetMatrix is used to load a 4-by-4 transformation matrix into the current transformation matrix. Use vpCurrentMatrix to set the current transformation matrix. State Variables The…
vpSetMaterial – set material properties Synopsis #include <volpack.h> vpResult vpSetMaterial(vpc, material, property, surface_side, r, g, b) vpContext *vpc; int material; int property; int surface_side; double r, g, b; Arguments vpc VolPack context from vpCreateContext. material A constant specifying a particular material number (VP_MATERIAL0, VP_MATERIAL1, …, VP_MATERIAL5). property A constant specifying one material property (VP_AMBIENT, VP_DIFFUSE,…
vpSetLookupShader – specify shading lookup tables Synopsis #include <volpack.h> vpResult vpSetLookupShader(vpc, color_channels, num_materials, color_field, color_table, color_table_size, weight_field, weight_table, weight_table_size) vpContext *vpc; int color_channels, num_materials; int color_field; float *color_table; int color_table_size; int weight_field; float *weight_table; int weight_table_size; Arguments vpc VolPack context from vpCreateContext. color_channels The number of color channels per pixel (1 or 3). num_materials The…
vpSetLight – set lighting properties Synopsis #include <volpack.h> vpResult vpSetLight(vpc, light_num, property, n0, n1, n2) vpContext *vpc; int light_num; int property; double n0, n1, n2; Arguments vpc VolPack context from vpCreateContext. light_num A constant specifying a particular light source (VP_LIGHT0, VP_LIGHT1, …, VP_LIGHT5). property A constant specifying one lighting property (VP_COLOR or VP_DIRECTION). n0, n1,…
vpSetImage – specify an image array Synopsis #include <volpack.h> vpResult vpSetImage(vpc, image, width, height, scan_bytes, pixel_type) vpContext *vpc; unsigned char *image; int width, height; int scan_bytes; int pixel_type; Arguments vpc VolPack context from vpCreateContext. image 2D array for storing result images. width Width of image in pixels. height Height of image in pixels. scan_bytes Number…
vpSetFilter – define a resampling filter Synopsis #include <volpack.h> vpResult vpSetFilter(vpc, num_taps, num_phases, weights) vpContext *vpc; int num_taps, num_phases; float *weights; Arguments vpc VolPack context from vpCreateContext. num_taps Number of filter taps. num_phases Number of filter phases. weights Array containing filter weights. Description vpSetFilter is used to specify a table of filter weights before resampling…
vpSetDepthCueing – set depth cueing parameters Synopsis #include <volpack.h> vpResult vpSetDepthCueing(vpc, front_factor, density) vpContext *vpc; double front_factor; double density; Arguments vpc VolPack context from vpCreateContext. front_factor Depth cueing factor at the front clipping plane. density Fog density. Description vpSetDepthCueing is used to set the parameters for depth cueing. Depth cueing is a simulated fog that…