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// $Id: cursor.cxx 748 2007-11-03 17:38:32Z martin $
//
// cursor.cxx - routine for DRAWxtl V5.4 - the GUI version
//
// Coded using the FLTK 1.1.6 widget set
//
// Larry W. Finger, Martin Kroeker and Brian Toby
//
// This module includes cursor support routines
//
// routines contained within this file:
//
// display_cursor_text - output the cursor position into the status line
// draw_cursor - put the cursor on the screen
// find_atom - find atom nearest the cursor position
// find_proj_atom - find atom that projects closest to the cursor
// move_cursor - move the cursor position
#include "drawxtl.h"
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
#include "draw_ext.h"
#include <FL/x.H>
#include "DRAWxtlViewUI.h"
#include "CrystalView.h"
#include "DRAWxtl_proto.h"
void display_cursor_text(void)
{
char Text[500];
char text[100];
char text2[100];
char Text2[100];
char Text3[100];
if (!cur_show) return;
strcpy(Text2,"");
strcpy(Text3,"");
if (! ReadFourMap)
sprintf (Text," Cursor: %.4f,%.4f,%.4f (step=%.2fA)",
cur_cen[0], cur_cen[1], cur_cen[2], drvui->cur_step);
else
sprintf (Text," Cursor: %.4f,%.4f,%.4f (step=%.2fA). Rho=%.3f",
cur_cen[0], cur_cen[1], cur_cen[2], drvui->cur_step,
InterpolateMap (cur_cen[0], cur_cen[1], cur_cen[2]));
if (cur_atom[0] > 0) {
sprintf(Text2," Atoms 1.%s",cur_name[0]);
}
if (cur_atom[1] > 0) {
sprintf(text2," 2.%s",cur_name[1]);
strcat(Text2,text2);
sprintf(Text3,"\n d12=%6.3fA",dist12);
if (cur_atom[2] > 0) {
sprintf(text2," 3.%s",cur_name[2]);
strcat(Text2,text2);
sprintf(text,", d23=%6.3fA, a123=%5.2f",dist23,ang123);
strcat(Text3,text);
if (cur_atom[3] > 0) {
sprintf(text2," 4.%s",cur_name[3]);
strcat(Text2,text2);
sprintf(text,", d34=%6.3fA, a234=%5.2f, tor1234=%5.2f",dist34,ang234,torsion_ang);
strcat(Text3,text);
}
}
}
strcat(Text,Text2);
strcat(Text,Text3);
drvui->Cursor_pos->value(Text);
}
void draw_cursor (void)
{
int i,j;
float vert[3];
if (!cur_show) return;
nvert = 0; /* initialize vertex list */
for (i = 0; i <= 2; ++i) {
for (j = 0; j < 3; j++)
vert[j] = cur_cen[j];
vert[i] = cur_cen[i] - 0.5f / drvui->lat_con[i];
add_vert_nc (vert);
vert[i] = cur_cen[i] + 0.5f / drvui->lat_con[i];
add_vert_nc (vert);
}
glPushMatrix ();
glDisable(GL_LIGHTING);
glColor3f (1.0, 0.0, 0.0);
glBegin (GL_LINES);
glVertex3f (s_vert[0], s_vert[1], s_vert[2]);
glVertex3f (s_vert[3], s_vert[4], s_vert[5]);
glVertex3f (s_vert[6], s_vert[7], s_vert[8]);
glVertex3f (s_vert[9], s_vert[10], s_vert[11]);
glVertex3f (s_vert[12], s_vert[13], s_vert[14]);
glVertex3f (s_vert[15], s_vert[16], s_vert[17]);
glEnd ();
glEnable(GL_LIGHTING);
glPopMatrix ();
}
int find_atom(void)
{
int i,j;
double distance = 1000.0,d;
int closest=0;
nvert=0;
for (i=0;i<natom;i++)
find_all_in_box(i);
for (j=0;j<nvert;j++) {
d= (o_vert[3*j]-cur_cen[0])*(o_vert[3*j]-cur_cen[0])
+(o_vert[3*j+1]-cur_cen[1])*(o_vert[3*j+1]-cur_cen[1])
+(o_vert[3*j+2]-cur_cen[2])*(o_vert[3*j+2]-cur_cen[2]);
if (d<distance) {
distance=d;
closest=j;
}
}
cur_cen[0]=o_vert[3*closest];
cur_cen[1]=o_vert[3*closest+1];
cur_cen[2]=o_vert[3*closest+2];
return closest;
}
int find_proj_atom(int x, int y)
{
int j,k;
double distance = 1.0e15,d;
int closest=0;
int clipped=0;
GLdouble winX, winY, winZ;
int saved_nvert = nvert;
for (j = 0; j < natom; ++j) { // get all atoms in display box
find_all_in_box (j);
}
for (j=saved_nvert;j<nvert;j++) { // loop through all atoms
clipped = 0;
if (clipflag == 1) {
for (k=0;k<3;k++)
if (o_vert[3*j+k] < drvui->frames[drvui->frame_no].clip_lim[k] - 0.01f
|| o_vert[3*j+k] >drvui->frames[drvui->frame_no].clip_lim[k+3] + 0.01f) clipped = 1;
}
if (clipped==1) continue;
gluProject(s_vert[3*j], s_vert[3*j + 1], s_vert[3*j + 2],
modelMatrix, projMatrix, viewport,
&winX, &winY, &winZ);
d = ((float)x - winX) * ((float) x - winX) +
((float) y + winY - viewport[3]) * ((float) y + winY - viewport[3]);
if (d<distance) { // find closest atom (in projection
distance=d;
closest=j;
}
}
nvert = saved_nvert;
cur_cen[0]=o_vert[3*closest]; // set cursor to atom coordinates
cur_cen[1]=o_vert[3*closest+1];
cur_cen[2]=o_vert[3*closest+2];
return closest;
}
void move_cursor (int axis, float inc_amt)
{
if (!cur_show) return;
cur_name[0][0]='\0';
cur_cen[axis] += inc_amt * drvui->cur_step / drvui->lat_con[axis];
}
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