Intel® Fortran Libraries Reference

Descriptions of the Library Routines 2wx1, y2(Input) INTEGER(2). Viewport coordinates for lower-right corner of bounding rectangle.x3, y3(Input) INTEGER(2). Viewport coordinates of start vector.x4, y4(Input) INTEGER(2). Viewport coordinates of end vector.wx1,wy1(Input) REAL(8). Window coordinates for upper-left corner of bounding rectangle.wx2,wy2(Input) REAL(8). Window coordinates for lower-right corner of bounding rectangle.wx3,wy3(Input) REAL(8). Window coordinates of start vector.wx4,wy4(Input) REAL(8). Window coordinates of end vector.Results:The result type is INTEGER(2). It is nonzero if successful; otherwise, 0. If the arc is clipped orpartially out of bounds, the arc is considered successfully drawn and the return is 1. If the arc isdrawn completely out of bounds, the return is 0.The center of the arc is the center of the bounding rectangle defined by the points (x1, y1) and (x2,y2) for ARC and (wx1, wy1) and (wx2, wy2) for ARC_W.The arc starts where it intersects an imaginary line extending from the center of the arc through(x3, y3) for ARC and (wx3, wy3) for ARC_W. It is drawn counterclockwise about the center of thearc, ending where it intersects an imaginary line extending from the center of the arc through (x4,y4) for ARC and (wx4, wy4) for ARC_W.ARC uses the view-coordinate system. ARC_W uses the window-coordinate system. In each case,the arc is drawn using the current color.NOTE. The ARC routine described here is a QuickWin graphics routine. Ifyou are trying to use the Microsoft* Platform SDK version of the Arc routine byincluding the IFWIN module, you need to specify the routine name asMSFWIN$Arc. For more information, see "Special Naming Convention forCertain QuickWin and Win32 Graphics Routines" in your user’s guide.2-9