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include <gset.h>
include <mach.h>
include "pexamine.h"
define MSIZE 2.0
# PT_DELPT -- Mark/unmark the point nearest the cursor.
procedure pt_delpt (gd, wx, wy, xpos, ypos, x, y, deleted, npix, undelete,
matchrad)
pointer gd # pointer to the graphics stream
real wx # X cursor position
real wy # Y cursor position
real xpos[ARB] # X coordinate array
real ypos[ARB] # Y coordinate array
real x[ARB] # X array of plotted data
real y[ARB] # Y array of plotted data
int deleted[ARB] # array of delete indicators
int npix # number of pixels
int undelete # undelete flag
real matchrad # matching radius
int i, row
real r2min, r2, mr2, wx0, wy0, xpos0, ypos0
begin
# Initialize.
row = 0
r2min = MAX_REAL
# Set matching radius for the image display or graph.
if (IS_INDEFR(matchrad)) {
mr2 = MAX_REAL
if (gd != NULL)
call gctran (gd, wx, wy, wx0, wy0, 1, 0)
else {
wx0 = wx
wy0 = wy
}
} else {
mr2 = matchrad ** 2
wx0 = wx
wy0 = wy
}
# Search for the point nearest the cursor.
do i = 1 , npix {
if (deleted[i] == PX_DELETE)
next
if ((deleted[i] == PX_MARK && undelete == NO) ||
(deleted[i] == PX_GOOD && undelete == YES))
next
if (! IS_INDEFR(xpos[i]) && ! IS_INDEFR(ypos[i])) {
if (IS_INDEFR(matchrad)) {
if (gd != NULL)
call gctran (gd, xpos[i], ypos[i], xpos0, ypos0, 1, 0)
else {
xpos0 = xpos[i]
ypos0 = ypos[i]
}
} else {
xpos0 = xpos[i]
ypos0 = ypos[i]
}
r2 = (wx0 - xpos0) ** 2 + (wy0 - ypos0) ** 2
} else
r2 = MAX_REAL
if (r2 >= r2min)
next
r2min = r2
row = i
}
# Return if point not found.
if ((row == 0) || (r2min > mr2))
return
# Delete the point.
if (undelete == NO) {
deleted[row] = PX_MARK
if (gd == NULL)
return
call gseti (gd, G_PMLTYPE, GL_SOLID)
call gmark (gd, x[row], y[row], GM_CROSS, MSIZE, MSIZE)
} else {
deleted[row] = PX_GOOD
if (gd == NULL)
return
call gseti (gd, G_PMLTYPE, GL_CLEAR)
call gmark (gd, x[row], y[row], GM_CROSS, MSIZE, MSIZE)
}
end
# PT_DYGTG -- Delete all points with Y > Y (cursor).
procedure pt_dygtg (gd, wy, ypos, x, y, deleted, npix, undelete)
pointer gd # pointer to graphics stream
real wy # Y cursor position
real ypos[ARB] # Y array of coordinate data
real x[ARB] # X array of plotted data
real y[ARB] # Y array of plotted data
int deleted[ARB] # array of delete indicators
int npix # number of pixels
int undelete # the delete or undelete flag
int i
begin
do i = 1 , npix {
if (ypos[i] <= wy)
next
if ((deleted[i] == PX_GOOD) && (undelete == NO)) {
deleted[i] = PX_MARK
if (gd == NULL)
next
call gseti (gd, G_PMLTYPE, GL_SOLID)
call gmark (gd, x[i], y[i], GM_CROSS, MSIZE, MSIZE)
} else if ((deleted[i] == PX_MARK) && (undelete == YES)) {
deleted[i] = PX_GOOD
if (gd == NULL)
next
call gseti (gd, G_PMLTYPE, GL_CLEAR)
call gmark (gd, x[i], y[i], GM_CROSS, MSIZE, MSIZE)
}
}
end
# PT_DYLTG -- Delete all points with Y < Y (cursor).
procedure pt_dyltg (gd, wy, ypos, x, y, deleted, npix, undelete)
pointer gd # pointer to graphics stream
real wy # Y cursor position
real ypos[ARB] # Y array of coordinate data
real x[ARB] # X array of plotted data
real y[ARB] # Y array of plotted data
int deleted[ARB] # array of delete indicators
int npix # number of pixels
int undelete # the delete or undelete flag
int i
begin
do i = 1 , npix {
if (ypos[i] >= wy)
next
if ((deleted[i] == PX_GOOD) && (undelete == NO)) {
deleted[i] = PX_MARK
if (gd == NULL)
next
call gseti (gd, G_PMLTYPE, GL_SOLID)
call gmark (gd, x[i], y[i], GM_CROSS, MSIZE, MSIZE)
} else if ((deleted[i] == PX_MARK) && (undelete == YES)) {
deleted[i] = PX_GOOD
if (gd == NULL)
next
call gseti (gd, G_PMLTYPE, GL_CLEAR)
call gmark (gd, x[i], y[i], GM_CROSS, MSIZE, MSIZE)
}
}
end
# PT_DXGTG -- Mark delete for all points with X > X (cursor)
procedure pt_dxgtg (gd, wx, xpos, x, y, deleted, npix, undelete)
pointer gd # pointer to graphics stream
real wx # X cursor position
real xpos[ARB] # X coordinate array
real x[ARB] # X array of plotted data
real y[ARB] # Y array of plotted data
int deleted[ARB] # array of delete indicators
int npix # number of pixels
int undelete # the delete or undelete flag
int i
begin
do i = 1 , npix {
if (xpos[i] <= wx)
next
if ((deleted[i] == PX_GOOD) && (undelete == NO)) {
deleted[i] = PX_MARK
if (gd == NULL)
next
call gseti (gd, G_PMLTYPE, GL_SOLID)
call gmark (gd, x[i], y[i], GM_CROSS, MSIZE, MSIZE)
} else if ((deleted[i] == PX_MARK) && (undelete == YES)) {
deleted[i] = PX_GOOD
if (gd == NULL)
next
call gseti (gd, G_PMLTYPE, GL_CLEAR)
call gmark (gd, x[i], y[i], GM_CROSS, MSIZE, MSIZE)
}
}
end
# PT_DXLTG -- Mark delete for all points with X < X (cursor).
procedure pt_dxltg (gd, wx, xpos, x, y, deleted, npix, undelete)
pointer gd # pointer to graphics stream
real wx # X cursor position
real xpos[ARB] # X coordinate array
real x[ARB] # X array of plotted data
real y[ARB] # Y array of plotted data
int deleted[ARB] # array of delete indicators
int npix # number of pixels
int undelete # the delete or undelete flag
int i
begin
do i = 1 , npix {
if (xpos[i] >= wx)
next
if ((deleted[i] == PX_GOOD) && (undelete == NO)) {
deleted[i] = PX_MARK
if (gd == NULL)
next
call gseti (gd, G_PMLTYPE, GL_SOLID)
call gmark (gd, x[i], y[i], GM_CROSS, MSIZE, MSIZE)
} else if ((deleted[i] == PX_MARK) && (undelete == YES)) {
deleted[i] = PX_GOOD
if (gd == NULL)
next
call gseti (gd, G_PMLTYPE, GL_CLEAR)
call gmark (gd, x[i], y[i], GM_CROSS, MSIZE, MSIZE)
}
}
end
# PT_DBOXG -- Delete all points inside a box
procedure pt_dboxg (gd, xpos, ypos, x, y, deleted, npix, x1, y1, x2, y2,
undelete)
pointer gd # pointer to the graphics stream
real xpos[ARB] # x coordinate array
real ypos[ARB] # y coordinate array
real x[ARB] # x array of plotted data
real y[ARB] # y array of plotted data
int deleted[ARB] # array of deletion indicators
int npix # number of pixels
real x1, y1, x2, y2 # corners of the box
int undelete # delete or undelete points
int i
real temp
begin
# Make sure the points are in the correct order.
if (x2 < x1) {
temp = x1
x1 = x2
x2 = temp
}
if (y2 < y1) {
temp = y1
y1 = y2
y2 = temp
}
# Search for points within the box and delete.
do i = 1 , npix {
if (xpos[i] < x1 || xpos[i] > x2 || ypos[i] < y1 || ypos[i] > y2)
next
if ((deleted[i] == PX_GOOD) && (undelete == NO)) {
deleted[i] = PX_MARK
if (gd == NULL)
next
call gseti (gd, G_PMLTYPE, GL_SOLID)
call gmark (gd, x[i], y[i], GM_CROSS, MSIZE, MSIZE)
} else if ((deleted[i] == PX_MARK) && (undelete == YES)) {
deleted[i] = PX_GOOD
if (gd == NULL)
next
call gseti (gd, G_PMLTYPE, GL_CLEAR)
call gmark (gd, x[i], y[i], GM_CROSS, MSIZE, MSIZE)
}
}
end
# PT_MDELETE -- Overplot crosses on those points which have been marked for
# deletion.
procedure pt_mdelete (gd, x, y, deleted, npix)
pointer gd # pointer to the graphics stream
real x[ARB] # the array plotted along the x axis
real y[ARB] # the array plotted along the y axis
int deleted[ARB] # the array of deletion indices
int npix # the number of pixels
int i
begin
do i = 1, npix {
if (deleted[i] != PX_MARK)
next
call gseti (gd, G_PMLTYPE, GL_SOLID)
call gmark (gd, x[i], y[i], GM_CROSS, MSIZE, MSIZE)
}
end
# PT_UPDATE -- Actually delete points currently marked for deletion.
procedure pt_update (deleted, npix)
int deleted[ARB] # array of deletions indices
int npix # the number of pixels
int i
begin
# Add the marked points to the deletions array.
do i = 1, npix {
if (deleted[i] != PX_MARK)
next
deleted[i] = PX_DELETE
}
end
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