diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/fracviewer.cxx | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/test/fracviewer.cxx b/test/fracviewer.cxx index e19fd568c..ca1c274ed 100644 --- a/test/fracviewer.cxx +++ b/test/fracviewer.cxx @@ -331,11 +331,37 @@ void agvSwitchMoveMode(int move) void agvHandleButton(int button, int state, int x, int y) { - if (button > GLUT_RIGHT_BUTTON)return; - if (state == GLUT_DOWN && downb == -1) { + // deal with mouse wheel events, that fltk sends as buttons 3 or 4 + //if (button > GLUT_RIGHT_BUTTON)return; + if ((state == GLUT_DOWN) && ((button == 3) || (button == 4))) { + // attempt to process scrollwheel as zoom in/out + float deltay = 0.25; + if (button == 3) { + deltay = (-0.25); + } + downb = -1; + downDist = EyeDist; + downEx = Ex; + downEy = Ey; + downEz = Ez; + downEyeMove = EyeMove; + EyeMove = 0; + + EyeDist = downDist + deltay; + Ex = downEx - E_SENS*deltay*sin(TORAD(EyeAz))*cos(TORAD(EyeEl)); + Ey = downEy - E_SENS*deltay*sin(TORAD(EyeEl)); + Ez = downEz + E_SENS*deltay*cos(TORAD(EyeAz))*cos(TORAD(EyeEl)); + + EyeMove = downEyeMove; + glutPostRedisplay(); + return; + } + else if (button > GLUT_RIGHT_BUTTON)return; // ignore any other button... + + if (state == GLUT_DOWN && downb == -1) { lastx = downx = x; lasty = downy = y; - downb = button; + downb = button; switch (button) { case GLUT_LEFT_BUTTON: |