Check the roam view before unprojecting

On win32 (and maybe others) the motion notify callback can occur before
the roam view is properly initialized.

diff --git a/src/grits-opengl.c b/src/grits-opengl.c
index 1b2cce95e362c4fc6c08978f298a3b27b61e2b35..0b4100a8f48672401d471895b26df4649b40f848 100644 (file)
--- a/src/grits-opengl.c
+++ b/src/grits-opengl.c
@@ -469,6 +469,8 @@ static void grits_opengl_unproject(GritsViewer *_opengl,
                gdouble *lat, gdouble *lon, gdouble *elev)
 {
        GritsOpenGL *opengl = GRITS_OPENGL(_opengl);
                gdouble *lat, gdouble *lon, gdouble *elev)
 {
        GritsOpenGL *opengl = GRITS_OPENGL(_opengl);

+       if (!opengl->sphere->view)
+               return;

        gdouble x, y, z;
        if (pz < 0) {
                gfloat tmp = 0;
        gdouble x, y, z;
        if (pz < 0) {
                gfloat tmp = 0;