diff options
Diffstat (limited to 'pkg/utilities/nttools/stxtools/wcslab/wcslab.x')
| -rw-r--r-- | pkg/utilities/nttools/stxtools/wcslab/wcslab.x | 935 |
1 files changed, 935 insertions, 0 deletions
diff --git a/pkg/utilities/nttools/stxtools/wcslab/wcslab.x b/pkg/utilities/nttools/stxtools/wcslab/wcslab.x new file mode 100644 index 00000000..2e6974c6 --- /dev/null +++ b/pkg/utilities/nttools/stxtools/wcslab/wcslab.x @@ -0,0 +1,935 @@ +include <gset.h> +include <imhdr.h> +include <math.h> +include <mwset.h> +include "wcslab.h" +include "wcs_desc.h" +include <ctype.h> + + +# WCSLAB -- Procedure to draw labels and grids in sky projection coordinates. +# +# Description +# Wcslab produces a labelling and grid based on the MWCS of a +# specified image. +# +# The only things necessary to run this routine are: +# 1) Open an image and pass the image descriptor in im. +# 2) Open the graphics device and set the desired viewport (with a +# gsview call). +# 3) Make sure that the wlpars pset is available. +# +# Upon return, the graphics system will be in the state that it had been +# left in and a "virtual viewport" will be returned in the arguments +# left, right, bottom, top. This viewport defines the region where labels +# and/or titles were written. If any graphics is performed within this +# region, chances are that something will be overwritten. If any other +# graphics remain outside this region, then what was produced by this +# subroutine will remain untouched. +# +# Bugs +# Can only handle sky projections for Right Ascension/Declination. This +# should be able to deal with any of the projections for this system, but +# has only been tested with the Tangent projection. + +procedure wcslab (mw, log_x1, log_x2, log_y1, log_y2, gp, title) + +pointer mw # I: the wcs descriptor +real log_x1, log_x2 # I/O: the viewport +real log_y1, log_y2 # I/O: the viewport +pointer gp # I: the graphics descriptor +char title[ARB] # I: the image title + +pointer wd +real junkx1, junkx2, junky1, junky2 +bool clgetb() +pointer wl_create() +errchk clgstr + +begin + # Allocate the descriptor. + wd = wl_create() + + # Set the title name. + call strcpy (title, WL_TITLE(wd), SZ_LINE) + + # Set the WCS descriptor. If the descriptor is NULL or if + # the use_wcs parameter is yes, retrieve the parameter + # specified wcs. + if (mw == NULL) + call wl_wcs_params (mw, log_x1, log_x2, log_y1, log_y2) + else if (clgetb ("usewcs")) + call wl_wcs_params (mw, junkx1, junkx2, junky1, junky2) + WL_MW(wd) = mw + + # Determine axis types. + call wl_get_system_type (WL_MW(wd), WL_SYSTEM_TYPE(wd), + WL_LOGICAL_CENTER(wd,1), WL_WORLD_CENTER(wd,1), WL_AXIS_FLIP(wd)) + if (IS_INDEFI(WL_SYSTEM_TYPE(wd))) + call error (0, "WCSLAB: Image WCS is unsupported\n") + + # Get the parameters. + call wl_gr_inparams (wd) + + # Copy the graphics descriptor. + WL_GP(wd) = gp + + # Set the plot window in pixels (the logical space of the WCS). + WL_SCREEN_BOUNDARY(wd,LEFT) = log_x1 + WL_SCREEN_BOUNDARY(wd,RIGHT) = log_x2 + WL_SCREEN_BOUNDARY(wd,BOTTOM) = log_y1 + WL_SCREEN_BOUNDARY(wd,TOP) = log_y2 + + # Plot and label the coordinate grid. + call wl_wcslab (wd) + + # Return the possibly modified graphics descriptor and viewport. + gp = WL_GP(wd) + call gsview (gp, WL_NEW_VIEW(wd,LEFT), WL_NEW_VIEW(wd,RIGHT), + WL_NEW_VIEW(wd,BOTTOM), WL_NEW_VIEW(wd,TOP)) + + # Save the current parameters. + if (WL_REMEMBER(wd) == YES) + call wl_gr_remparams (wd) + + # Release the memory. + call wl_destroy (wd) +end + + +# WL_CREATE -- Create a WCSLAB descriptor and initialize it. +# +# Description +# This routine allocates the memory for the WCSLAB descriptor and +# subarrays and initializes values. +# +# Returns +# the pointer to the WCSLAB descriptor. + +pointer procedure wl_create() + +int i,j +pointer wd + +begin + # Allocate the descriptor memory. + call malloc (wd, WL_LEN, TY_STRUCT) + + # Allocate the subarrays. + call malloc (WL_AXIS_TITLE_PTR(wd), SZ_LINE * N_DIM, TY_CHAR) + call malloc (WL_AXIS_TITLE_SIDE_PTR(wd), N_SIDES * N_DIM, TY_BOOL) + call malloc (WL_BEGIN_PTR(wd), N_DIM, TY_DOUBLE) + call malloc (WL_END_PTR(wd), N_DIM, TY_DOUBLE) + call malloc (WL_LABEL_ANGLE_PTR(wd), MAX_LABEL_POINTS, TY_DOUBLE) + call malloc (WL_LABEL_AXIS_PTR(wd), MAX_LABEL_POINTS, TY_INT) + call malloc (WL_LABEL_POSITION_PTR(wd), N_DIM * MAX_LABEL_POINTS, + TY_DOUBLE) + call malloc (WL_LABEL_SIDE_PTR(wd), N_DIM * N_SIDES, TY_BOOL) + call malloc (WL_LABEL_VALUE_PTR(wd), MAX_LABEL_POINTS, TY_DOUBLE) + call malloc (WL_LOGICAL_CENTER_PTR(wd), N_DIM, TY_DOUBLE) + call malloc (WL_MAJ_I_PTR(wd), N_DIM, TY_DOUBLE) + call malloc (WL_MIN_I_PTR(wd), N_DIM, TY_INT) + call malloc (WL_NV_PTR(wd), N_SIDES, TY_REAL) + call malloc (WL_SCREEN_BOUNDARY_PTR(wd), N_SIDES, TY_DOUBLE) + call malloc (WL_TITLE_PTR(wd), SZ_LINE, TY_CHAR) + call malloc (WL_WORLD_CENTER_PTR(wd), N_DIM, TY_DOUBLE) + + # Initialize the simple values (should be the same as the parameter + # file). + WL_POLAR_LABEL_POSITION(wd) = INDEF + WL_AXIS_TITLE_SIZE(wd) = 1.5 + WL_LABEL_SIZE(wd) = 1.0 + WL_MAJ_TICK_SIZE(wd) = .03 + WL_MIN_TICK_SIZE(wd) = .01 + WL_TITLE_SIZE(wd) = 2.0 + WL_GRAPH_TYPE(wd) = INDEFI + WL_MAJ_LINE_TYPE(wd) = GL_SOLID + WL_MIN_LINE_TYPE(wd) = GL_DOTTED + WL_TITLE_SIDE(wd) = TOP + WL_ALWAYS_FULL_LABEL(wd) = NO + WL_LABEL_ROTATE(wd) = YES + WL_LABON(wd) = YES + WL_LABOUT(wd) = YES + WL_MAJ_GRIDON(wd) = YES + WL_MIN_GRIDON(wd) = NO + WL_REMEMBER(wd) = NO + WL_TICK_IN(wd) = YES + + # Initialize any strings. + call strcpy ("imtitle", WL_TITLE(wd), SZ_LINE) + + # Initialize the axis dependent values. + do i = 1, N_DIM { + WL_AXIS_TITLE(wd,i) = EOS + WL_AXIS_TITLE_SIDE(wd,i) = INDEFI + WL_BEGIN(wd,i) = INDEFD + WL_END(wd,i) = INDEFD + WL_MAJOR_INTERVAL(wd,i) = INDEFD + WL_MINOR_INTERVAL(wd,i) = 5 + do j = 1, N_SIDES + WL_LABEL_SIDE(wd,j,i) = false + } + + # Return the descriptor. + return (wd) +end + + +# WL_WCS_PARAMS -- Read the WCS descriptor from the parameters. +# +# Description +# This procedure returns the WCS descriptor created from task parameters +# and the logical space that will be graphed. +# +# Bugs +# This only deals with two axes. + +procedure wl_wcs_params (mw, log_x1, log_x2, log_y1, log_y2) + +pointer mw # O: The MWCS descriptor. +real log_x1, log_x2, # O: The extent of the logical space to graph. +real log_y1, log_y2 + +real cd[2,2], r[2], w[2] +pointer sp, input, pp +pointer clopset(), mw_open() +real clgpsetr() + +begin + call smark (sp) + call salloc (input, SZ_LINE, TY_CHAR) + + # Open the pset. + pp = clopset ("wcspars") + + # Create an MWCS descriptor. + mw = mw_open (NULL, 2) + + # Get the types. + call clgpset (pp, "ctype1", Memc[input], SZ_LINE) + call wl_decode_ctype (mw, Memc[input], 1) + call clgpset (pp, "ctype2", Memc[input], SZ_LINE) + call wl_decode_ctype (mw, Memc[input], 2) + + # Get the reference coordinates. + r[1] = clgpsetr (pp, "crpix1") + r[2] = clgpsetr (pp, "crpix2") + w[1] = clgpsetr (pp, "crval1") + w[2] = clgpsetr (pp, "crval2") + + # Get the CD matrix. + cd[1,1] = clgpsetr (pp, "cd1_1") + cd[1,2] = clgpsetr (pp, "cd1_2") + cd[2,1] = clgpsetr (pp, "cd2_1") + cd[2,2] = clgpsetr (pp, "cd2_2") + + # Set the Wterm. + call mw_swtermr (mw, r, w, cd, 2) + + # Get the extent of the logical space. + log_x1 = clgpsetr (pp, "log_x1") + log_x2 = clgpsetr (pp, "log_x2") + log_y1 = clgpsetr (pp, "log_y1") + log_y2 = clgpsetr (pp, "log_y2") + + # Close the pset. + call clcpset (pp) + + call sfree (sp) +end + + +# WL_DECODE_CTYPE -- Decode the ctype string into axis type and system type. +# +# Description +# The CTYPE is what is found in FITS keywords CTYPEn. The value may +# contain two pieces of information, always the system type and possibly +# an individual axis type. For systems such as plain old linear systems +# just a system type is defined. However, for celestial systems, both +# types are defined in the form "axistype-systemtype". There may be +# any number of '-' in between the values. + +procedure wl_decode_ctype (mw, input, axno) + +pointer mw # I: the MWCS descriptor +char input[ARB] # I: the string input +int axno # I: the axis being worked on + +int i, input_len +int strncmp(), strldx(), strlen() +string empty "" + +begin + + input_len = strlen (input) + + # Fix some characters. + do i = 1, input_len { + if (input[i] == ' ' || input[i] == '\'') + break + else if (IS_UPPER(input[i])) + input[i] = TO_LOWER(input[i]) + else if (input[i] == '_') + input[i] = '-' + } + + # Determine the type of function on this axis. + if (strncmp (input, "linear", 6) == 0) { + call mw_swtype (mw, 1, 2, "linear", empty) + + } else if (strncmp (input, "ra--", 4) == 0) { + i = strldx ("-", input) + 1 + call mw_swtype (mw, 1, 2, input[i], empty) + call mw_swattrs (mw, axno, "axtype", "ra") + + } else if (strncmp (input, "dec-", 4) == 0) { + i = strldx ("-", input) + 1 + call mw_swtype (mw, 1, 2, input[i], empty) + call mw_swattrs (mw, axno, "axtype", "dec") + + } else { + # Since we have to be able to read any FITS header, we have + # no control over the value of CTYPEi. If the value is + # something we don't know about, assume a LINEAR axis, using + # the given value of CTYPEi as the default axis label. + call mw_swtype (mw, 1, 2, "linear", empty) + call mw_swattrs (mw, axno, "label", input) + } + +end + + +# WL_GET_SYSTEM_TYPE -- Determine type of transformation the MWCS represents. +# +# Note +# For some systems, the axis mapping reverses the order to make +# the rest of the code tractable. The only problem is that when graphing, +# the graph routines need to "fix" this reversal. Also note that this +# occurs only for systems that have distinct axis types, such as RA and +# DEC. +# +# Bugs +# A potential problem: For a WCS that has more axes than necessary +# for the sky projections, those axis are set such that during +# transformations, the first index position is used. For the one +# example I have seen, the "third" axis is time and this interpretation +# works. But, I am sure something will fall apart because of this. + +procedure wl_get_system_type (mw, system_type, logical_center, world_center, + flip) + +pointer mw # I: the MWCS descriptor. +int system_type # O: the transformation type: + # RA_DEC -> tan, sin, or arc projection + # in right ascension and + # declination + # LINEAR -> any regular linear system + # INDEFI -> could not be determined +double logical_center[N_DIM] # O: the center point in the logical system. +double world_center[N_DIM] # O: the center point in the world system. +int flip # O: true if the order of the axes have been + # changed by axis mappins + +double tmp_logical[MAX_DIM], tmp_world[MAX_DIM] +int wcs_dim, axis, index_sys1, index_sys2, found_axis +int axno[MAX_DIM], axval[MAX_DIM], found_axis_list[N_DIM] +pointer sp, axtype, cd, cur_type +int mw_stati(), strncmp(), strdic() +errchk mw_gwattrs + +begin + # Get some memory. + call smark (sp) + call salloc (axtype, SZ_LINE, TY_CHAR) + call salloc (cur_type, SZ_LINE, TY_CHAR) + call salloc (cd, MAX_DIM, TY_DOUBLE) + + # Get the dimensionality of the WCS. + call mw_seti (mw, MW_USEAXMAP, NO) + wcs_dim = mw_stati (mw, MW_NDIM) + + # Initialize the two dimensions. + index_sys1 = INDEFI + index_sys2 = INDEFI + + # Look through the possible supported axis types. When a type has + # exactly N_DIM axes defined, that will be the one used. + + for (system_type = 1; system_type <= NUMBER_OF_SUPPORTED_TYPES; + system_type = system_type + 1) { + + # Determine the string that should be looked for. + switch (system_type) { + case RA_DEC: + call strcpy (RA_DEC_DICTIONARY, Memc[cur_type], SZ_LINE) + case LINEAR: + call strcpy (LINEAR_DICTIONARY, Memc[cur_type], SZ_LINE) + } + + # Initialize the number of found axis. + found_axis = 0 + + # Examine each axis to determine whether the current axis type is + # the one to use. + for (axis = 1; axis <= wcs_dim; axis = axis + 1) { + + # If the current physical axis is not mapped, ignore it. + # This statement is causing a problem in 2.10.3, not sure + # why but am removing it for now. + #if (axno[axis] == 0) + #next + + ifnoerr (call mw_gwattrs( mw, axis, "wtype", Memc[axtype], + SZ_LINE)) { + call strlwr (Memc[axtype]) + + # If this axis type matches the one being looked for, add + # it to the axis list. If there are too many axis of the + # current type found, don't add to the found axis list. + + if (strdic (Memc[axtype], Memc[axtype], SZ_LINE, + Memc[cur_type]) > 0) { + found_axis = found_axis + 1 + if (found_axis <= N_DIM) + found_axis_list[found_axis] = axis + } + } + } + + # Check to see whether we have the right number axes. + if (found_axis == N_DIM) + break + + } + + # If any axes were found, then further check axis types. + # Depending on the axis type, there may be need to distinguish + # between the two possible axis further. + + if (found_axis == N_DIM) + switch (system_type) { + case RA_DEC: + for (axis = 1; axis <= N_DIM; axis = axis + 1) + ifnoerr (call mw_gwattrs (mw, found_axis_list[axis], + "axtype", Memc[axtype], SZ_LINE)) { + call strlwr( Memc[axtype] ) + if (strncmp (Memc[axtype], "ra", 2) == 0) + index_sys1 = found_axis_list[axis] + else if (strncmp (Memc[axtype], "dec", 3) == 0) + index_sys2 = found_axis_list[axis] + } + + # The "default" seems to be the LINEAR case for MWCS. + # Since no other information is provided, this is all we know. + default: + index_sys1 = found_axis_list[1] + index_sys2 = found_axis_list[2] + } + + # If either axis is unknown, something is wrong. If the WCS has two + # axes defined, then make some grand assumptions. If not, then there + # is nothing more to be done. + + if (IS_INDEFI (index_sys1) || IS_INDEFI (index_sys2)) { + if (wcs_dim >= N_DIM) { + index_sys1 = 1 + index_sys2 = 2 + } else + call error (0, "Wcslab: Fewer than two defined axes") + } + + # Zero the axis values and set any "unknown" axis to always use the + # "first" position in that axis direction. This will more than likely + # be a problem, but no general solution comes to mind this second. + + call amovki (0, axno, wcs_dim) + call amovki (0, axval, wcs_dim) + + # Setup so that the desired axes are set as the X and Y axis. + axno[index_sys1] = X_DIM + axno[index_sys2] = Y_DIM + call mw_saxmap (mw, axno, axval, wcs_dim) + + # Recover the center points of the Logical and World systems. + call mw_gwtermd (mw, tmp_logical, tmp_world, Memd[cd], wcs_dim) + + logical_center[X_DIM] = tmp_logical[index_sys1] + logical_center[Y_DIM] = tmp_logical[index_sys2] + world_center[X_DIM] = tmp_world[index_sys1] + world_center[Y_DIM] = tmp_world[index_sys2] + + # Check for reversal of axes + if (index_sys1 > index_sys2) + flip = YES + else + flip = NO + + # Release the memory. + call sfree (sp) +end + + +# WL_GR_INPARAMS -- Read in the graphics parameters for wcslab. +# +# Description +# Read all the parameters in and make some decisions about what +# will be done. + +procedure wl_gr_inparams (wd) + +pointer wd # I: the WCSLAB descriptor + +pointer sp, aline, pp +bool clgpsetb(), streq() +double wl_string_to_internal() +int btoi(), strdic(), wl_line_type(), clgpseti() +pointer clopset() +real clgpsetr() + +begin + # Get some memory. + call smark (sp) + call salloc (aline, SZ_LINE, TY_CHAR) + + # Open the pset. + pp = clopset ("wlpars") + + # Get the title if other than the default. + call clgpset (pp, "title", Memc[aline], SZ_LINE) + if (! streq (Memc[aline], "imtitle")) + call strcpy (Memc[aline], WL_TITLE(wd), SZ_LINE) + + # Get the axis titles. + call clgpset (pp, "axis1_title", WL_AXIS_TITLE(wd,AXIS1), SZ_LINE) + call clgpset (pp, "axis2_title", WL_AXIS_TITLE(wd,AXIS2), SZ_LINE) + + # Get the parameters. + WL_ALWAYS_FULL_LABEL(wd) = btoi (clgpsetb (pp,"full_label")) + WL_AXIS_TITLE_SIZE(wd) = clgpsetr (pp, "axis_title_size") + WL_LABEL_ROTATE(wd) = btoi (clgpsetb (pp, "rotate")) + WL_LABEL_SIZE(wd) = clgpsetr (pp, "label_size") + WL_LABON(wd) = btoi (clgpsetb (pp, "dolabel")) + WL_LABOUT(wd) = btoi (clgpsetb (pp, "labout")) + WL_MAJ_GRIDON(wd) = btoi (clgpsetb (pp, "major_grid")) + WL_MAJ_TICK_SIZE(wd) = clgpsetr (pp, "major_tick") + WL_MIN_GRIDON(wd) = btoi (clgpsetb (pp, "minor_grid")) + WL_MINOR_INTERVAL(wd,AXIS1) = clgpseti (pp, "axis1_minor") + WL_MINOR_INTERVAL(wd,AXIS2) = clgpseti (pp, "axis2_minor") + WL_MIN_TICK_SIZE(wd) = clgpsetr (pp, "minor_tick") + WL_REMEMBER(wd) = btoi (clgpsetb (pp, "remember")) + WL_TICK_IN(wd) = btoi (clgpsetb (pp, "tick_in")) + WL_TITLE_SIZE(wd) = clgpsetr (pp, "title_size") + + # Set what type of graph will be plotted. + call clgpset (pp, "graph_type", Memc[aline], SZ_LINE) + call strlwr (Memc[aline]) + WL_GRAPH_TYPE(wd) = strdic (Memc[aline], Memc[aline], SZ_LINE, + GRAPHTYPES) + if (WL_GRAPH_TYPE(wd) <= 0) + WL_GRAPH_TYPE(wd) = INDEFI + + # Get which sides labels will appear on. + call clgpset (pp, "axis1_side", Memc[aline], SZ_LINE) + call strlwr (Memc[aline]) + call wl_label_side (Memc[aline], WL_LABEL_SIDE(wd,1,AXIS1)) + + call clgpset (pp, "axis2_side", Memc[aline], SZ_LINE) + call strlwr (Memc[aline]) + call wl_label_side (Memc[aline], WL_LABEL_SIDE(wd,1,AXIS2)) + + # Get the polar justification direction. + call clgpset (pp, "justify", Memc[aline], SZ_LINE) + call strlwr (Memc[aline]) + WL_POLAR_LABEL_DIRECTION(wd) = strdic (Memc[aline], Memc[aline], + SZ_LINE, GRAPHSIDES) + if (WL_POLAR_LABEL_DIRECTION(wd) <= 0) + WL_POLAR_LABEL_DIRECTION(wd) = INDEFI + + # Decode the graphing parameters. + call clgpset (pp, "axis1_int", Memc[aline], SZ_LINE) + WL_MAJOR_INTERVAL(wd,AXIS1) = wl_string_to_internal (Memc[aline], + WL_SYSTEM_TYPE(wd), AXIS1) + call clgpset (pp, "axis1_beg", Memc[aline], SZ_LINE) + WL_BEGIN(wd,AXIS1) = wl_string_to_internal (Memc[aline], + WL_SYSTEM_TYPE(wd), AXIS1) + call clgpset (pp, "axis1_end", Memc[aline], SZ_LINE) + WL_END(wd,AXIS1) = wl_string_to_internal (Memc[aline], + WL_SYSTEM_TYPE(wd), AXIS1) + + call clgpset (pp, "axis2_int", Memc[aline], SZ_LINE) + WL_MAJOR_INTERVAL(wd,AXIS2) = wl_string_to_internal (Memc[aline], + WL_SYSTEM_TYPE(wd), AXIS2) + call clgpset (pp, "axis2_beg", Memc[aline], SZ_LINE) + WL_BEGIN(wd,AXIS2) = wl_string_to_internal(Memc[aline], + WL_SYSTEM_TYPE(wd), AXIS2 ) + call clgpset (pp, "axis2_end", Memc[aline], SZ_LINE) + WL_END(wd,AXIS2) = wl_string_to_internal (Memc[aline], + WL_SYSTEM_TYPE(wd), AXIS2) + + # Get the polar label position. + call clgpset (pp, "axis2_dir", Memc[aline], SZ_LINE) + WL_POLAR_LABEL_POSITION(wd) = wl_string_to_internal( Memc[aline], + WL_SYSTEM_TYPE(wd), AXIS1) + + # Get the axis titles. + call clgpset (pp, "axis1_title_side", Memc[aline], SZ_LINE) + call strlwr (Memc[aline]) + WL_AXIS_TITLE_SIDE(wd,AXIS1) = strdic (Memc[aline], Memc[aline], + SZ_LINE, GRAPHSIDES) + if (WL_AXIS_TITLE_SIDE(wd,AXIS1) <= 0) + WL_AXIS_TITLE_SIDE(wd,AXIS1) = INDEFI + + call clgpset (pp, "axis2_title_side", Memc[aline], SZ_LINE) + call strlwr (Memc[aline]) + WL_AXIS_TITLE_SIDE(wd,AXIS2) = strdic (Memc[aline], Memc[aline], + SZ_LINE, GRAPHSIDES) + if (WL_AXIS_TITLE_SIDE(wd,AXIS2) <= 0) + WL_AXIS_TITLE_SIDE(wd,AXIS2) = INDEFI + + # Decode the grid line types. + call clgpset (pp, "major_line", Memc[aline], SZ_LINE) + WL_MAJ_LINE_TYPE(wd) = wl_line_type (Memc[aline]) + call clgpset (pp, "minor_line", Memc[aline], SZ_LINE) + WL_MIN_LINE_TYPE(wd) = wl_line_type (Memc[aline]) + + # Get the title side. + call clgpset (pp, "title_side", Memc[aline], SZ_LINE) + call strlwr (Memc[ aline]) + WL_TITLE_SIDE(wd) = strdic (Memc[aline], Memc[aline], SZ_LINE, + GRAPHSIDES) + + # Close the pset. + call clcpset (pp) + + # Free memory. + call sfree (sp) +end + + +# WL_GR_REMPARAMS -- Write out the graphing parameters. + +procedure wl_gr_remparams (wd) + +pointer wd # I: the WCSLAB descriptor. + +pointer sp, output, pp +pointer clopset() + +begin + # Get some memory. + call smark (sp) + call salloc (output, SZ_LINE, TY_CHAR) + + # Open the pset. + pp = clopset ("wlpars") + + # Set the graph type. + switch (WL_GRAPH_TYPE(wd)) { + case NORMAL: + call clppset (pp, "graph_type", "normal") + case POLAR: + call clppset (pp, "graph_type", "polar") + case NEAR_POLAR: + call clppset (pp, "graph_type", "near_polar") + default: + call clppset (pp, "graph_type", "default") + } + + # Write back the labelling parameters. + call wl_internal_to_string (WL_MAJOR_INTERVAL(wd,AXIS1), + WL_SYSTEM_TYPE(wd), AXIS1, Memc[output]) + call clppset (pp, "axis1_int", Memc[output]) + call wl_internal_to_string (WL_BEGIN(wd,AXIS1), WL_SYSTEM_TYPE(wd), + AXIS1, Memc[output]) + call clppset (pp, "axis1_beg", Memc[output]) + call wl_internal_to_string (WL_END(WD,AXIS1), WL_SYSTEM_TYPE(wd), + AXIS1, Memc[output]) + call clppset (pp, "axis1_end", Memc[output]) + call wl_internal_to_string (WL_MAJOR_INTERVAL(wd,AXIS2), + WL_SYSTEM_TYPE(wd), AXIS2, Memc[output]) + call clppset (pp, "axis2_int", Memc[output]) + call wl_internal_to_string (WL_BEGIN(wd,AXIS2), WL_SYSTEM_TYPE(wd), + AXIS2, Memc[output]) + call clppset (pp, "axis2_beg", Memc[output]) + call wl_internal_to_string (WL_END(wd,AXIS2), WL_SYSTEM_TYPE(wd), + AXIS2, Memc[output]) + call clppset (pp, "axis2_end", Memc[output]) + call wl_internal_to_string (WL_POLAR_LABEL_POSITION(wd), + WL_SYSTEM_TYPE(wd), AXIS1, Memc[output]) + call clppset (pp, "axis2_dir", Memc[output]) + + # Write back labelling justification. + call wl_side_to_string (WL_POLAR_LABEL_DIRECTION(wd), Memc[output], + SZ_LINE) + call clppset (pp, "justify", Memc[output]) + + # Put the axis title sides out. + call wl_side_to_string (WL_AXIS_TITLE_SIDE(wd,AXIS1), Memc[output], + SZ_LINE) + call clppset (pp, "axis1_title_side", Memc[output]) + call wl_side_to_string (WL_AXIS_TITLE_SIDE(wd,AXIS2), Memc[output], + SZ_LINE ) + call clppset (pp, "axis2_title_side", Memc[output]) + + # Put the label sides out. + call wl_put_label_sides (WL_LABEL_SIDE(wd,1,AXIS1), Memc[output], + SZ_LINE ) + call clppset (pp, "axis1_side", Memc[output]) + call wl_put_label_sides (WL_LABEL_SIDE(wd,1,AXIS2), Memc[output], + SZ_LINE) + call clppset (pp, "axis2_side", Memc[output]) + + # Close the pset. + call clcpset (pp) + + # Free memory. + call sfree (sp) +end + + +# WL_DESTROY -- Deallocate the WCSLAB descriptor. + +procedure wl_destroy (wd) + +pointer wd # I: the WCSLAB descriptor to be destroyed + +begin + # Deallocate all the subarrays. + call mfree (WL_WORLD_CENTER_PTR(wd), TY_DOUBLE) + call mfree (WL_TITLE_PTR(wd), TY_CHAR) + call mfree (WL_SCREEN_BOUNDARY_PTR(wd), TY_DOUBLE) + call mfree (WL_NV_PTR(wd), TY_REAL) + call mfree (WL_MIN_I_PTR(wd), TY_INT) + call mfree (WL_MAJ_I_PTR(wd), TY_DOUBLE) + call mfree (WL_LOGICAL_CENTER_PTR(wd), TY_DOUBLE) + call mfree (WL_LABEL_VALUE_PTR(wd), TY_DOUBLE) + call mfree (WL_LABEL_SIDE_PTR(wd), TY_BOOL) + call mfree (WL_LABEL_POSITION_PTR(wd), TY_DOUBLE) + call mfree (WL_LABEL_AXIS_PTR(wd), TY_INT) + call mfree (WL_LABEL_ANGLE_PTR(wd), TY_DOUBLE) + call mfree (WL_END_PTR(wd), TY_DOUBLE) + call mfree (WL_BEGIN_PTR(wd), TY_DOUBLE) + call mfree (WL_AXIS_TITLE_SIDE_PTR(wd), TY_BOOL) + call mfree (WL_AXIS_TITLE_PTR(wd), TY_CHAR) + + # Now deallocate the structure. + call mfree (wd, TY_STRUCT) +end + + +# WL_LABEL_SIDE -- Decode string into set of booleans sides. + +procedure wl_label_side (input, flag) + +char input[ARB] # I: string listing the sides to be labeled +bool flag[N_SIDES] # O: the flags indicating which sides wll be labeled + +int i +int strmatch() + +begin + # Initialize all the flags to false. + do i = 1, N_SIDES + flag[i] = false + + # Now set each side that is in the list. + if (strmatch (input, "right") != 0) + flag[RIGHT] = true + if (strmatch (input, "left") != 0) + flag[LEFT] = true + if (strmatch (input, "top") != 0) + flag[TOP] = true + if (strmatch (input, "bottom") != 0) + flag[BOTTOM] = true +end + + +# WL_STRING_TO_INTERVAL -- Convert from a string to a number. +# +# Description +# Since (ideally) the wcslab task should be able to handle any sky +# map transformation, there are a number of potential units that can be +# transformed from. The specification of coordinates in these systems +# are also quite varied. Thus, for input purposes, coordinates are entered +# as strings. This routine decodes the strings to a common unit (degrees) +# based on the type of system being graphed. +# +# Function Returns +# This returns the single coordinate value converted to a base system +# (degrees). + +double procedure wl_string_to_internal (input, axis_type, which_axis) + +char input[ARB] # I; the string containing the numerical value +int axis_type # I: the type of wcs +int which_axis # I: the axis number + +double value +int strlen(), nscan() + +begin + # It is possible that the value was not defined. + if (strlen (input) <= 0) + value = INDEFD + + # Decode based on the system. + else + switch (axis_type) { + + # The RA and DEC systems. + case RA_DEC: + + # Since SPP FMTIO can handle the HH:MM:SS format, just let it + # read in the value. However, there is no way to distinquish + # H:M:S from D:M:S. If the axis being read is RA, assume that + # it was H:M:S. + + call sscan (input) + call gargd (value) + + # If the axis is Longitude == RA, then convert the hours to + # degrees. + if (nscan() < 1) { + value = INDEFD + } else { + if (which_axis == AXIS1) + value = HRSTODEG (value) + } + + # Default- unknown system, just read the string as a double + # precision and return it. + default: + call sscan (input) + call gargd (value) + if (nscan() < 1) + value = INDEFD + } + + return (value) +end + + +# WL_LINE_TYPE -- Decode a string into an IRAF GIO polyline type. + +int procedure wl_line_type (line_type_string) + +char line_type_string[ARB] # I: the string specifying the line type + # "solid" -> GL_SOLID + # "dotted" -> GL_DOTTED + # "dashed" -> GL_DASHED + # "dotdash" -> GL_DOTDASH +int type +bool streq() + +begin + if (streq (line_type_string, "solid")) + type = GL_SOLID + else if (streq (line_type_string, "dotted")) + type = GL_DOTTED + else if (streq( line_type_string, "dashed")) + type = GL_DASHED + else if (streq (line_type_string, "dotdash")) + type = GL_DOTDASH + else { + call eprintf ("Pattern unknown, using 'solid'.\n") + type = GL_SOLID + } + + return (type) +end + + +# WL_INTERNAL_TO_STRING - Convert internal representation to a string. + +procedure wl_internal_to_string (value, system_type, which_axis, output) + +double value # I: the value to convert +int system_type # I: the wcs type +int which_axis # I: the axis +char output[ARB] # O: the output string + +begin + # If the value is undefined, write an empty string. + if (IS_INDEFD (value)) + output[1] = EOS + + # Else, convert the value depending on the axis types. + else + switch (system_type) { + + # Handle the RA, DEC + case RA_DEC: + + # If this is Axis1 == Right Ascension, then convert to hours. + if (which_axis == AXIS1) + value = value / 15.0D0 + + call sprintf (output, SZ_LINE, "%.6h") + call pargd (value) + + # Else, just write a value. + default: + call sprintf (output, SZ_LINE, "%.7g") + call pargd (value) + } + +end + + +# WL_SIDE_TO_STRING -- Convert a side to its string representation. + +procedure wl_side_to_string (side, output, max_len) + +int side # I: the side to convert +char output[max_len] # O: the string representation of the side +int max_len # I: the maximum length of the output string + +begin + switch (side) { + case RIGHT: + call strcpy ("right", output, max_len) + case LEFT: + call strcpy ("left", output, max_len) + case TOP: + call strcpy ("top", output, max_len) + case BOTTOM: + call strcpy ("bottom", output, max_len) + default: + call strcpy ("default", output, max_len) + } +end + + +# WL_PUT_LABEL_SIDES -- Create a string containing the sides specified. + +procedure wl_put_label_sides (side_flags, output, max_len) + +bool side_flags[N_SIDES] # I: the boolean array of sides +char output[ARB] # O: the output comma separated list of sides +int max_len # I: maximum length of the output string + +int i +pointer sp, side +int strlen() + +begin + # Get memory. + call smark (sp) + call salloc (side, max_len, TY_CHAR) + + # Build the list. + output[1] = EOS + do i = 1, N_SIDES + if (side_flags[i]) { + if (strlen (output) != 0) + call strcat (",", output, max_len) + call wl_side_to_string (i, Memc[side], max_len) + call strcat (Memc[side], output, max_len) + } + + if (strlen (output) == 0) + call strcat ("default", output, max_len) + + # Free memory. + call sfree (sp) +end |