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src/
controller/
selection_from_db.sqc (
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#define GL_GLEXT_PROTOTYPES
#include "selection_from_db.h"
#include "../view/exp004state0.h"
#include "../util/check_error.h"
#include <GL/glut.h>
#include "sqlca.h"
extern struct sqlca sqlca;
/*
* A simple alias to make the code more readable.
*/
#define S exp004state0
void
selection_from_db (void)
{
/*
* db2dclgn -d exp004 -t vis_sel_set
*/
EXEC SQL BEGIN DECLARE SECTION;
EXEC SQL INCLUDE 'controller/vis_sel_set.h';
EXEC SQL END DECLARE SECTION;
EXEC SQL DECLARE c3 CURSOR FOR
SELECT * FROM vis_sel_set
ORDER BY title, id DESC;
EXEC SQL OPEN c3;
check_error (__FILE__, __LINE__);
/*
* This loop currently assumes only one set in the table and does
* not use the title assigned to that set. This should be improved
* to allow the user to manage multiple sets by name.
*/
EXEC SQL FETCH c3 INTO :vis_sel_set;
while (sqlca.sqlcode != 100)
{
int i = vis_sel_set.id - 1;
S.selection.set[i] = true;
S.base_colors_data[i][0] = vis_sel_set.r;
S.base_colors_data[i][1] = vis_sel_set.g;
S.base_colors_data[i][2] = vis_sel_set.b;
S.base_colors_data[i][3] = 0.6;
EXEC SQL FETCH c3 INTO :vis_sel_set;
}
EXEC SQL CLOSE c3;
check_error (__FILE__, __LINE__);
EXEC SQL COMMIT;
check_error (__FILE__, __LINE__);
/*
* Update the graphics memory.
*/
glBindBuffer (GL_ARRAY_BUFFER, S.buffers[BASE_COLORS]);
glColorPointer (4, GL_FLOAT, 0, 0);
glBufferData (GL_ARRAY_BUFFER,
sizeof (S.base_colors_data), S.base_colors_data,
GL_STATIC_DRAW);
glutPostRedisplay ();
return;
}
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