#module BannerCube "V1.0" /* **++ ** FACILITY: ** ** The DECwindows Banner program ** ** ABSTRACT: ** ** This module contains all the code, to run the CPU histogram. ** ** AUTHORS: ** ** JIM SAUNDERS ** ** ** CREATION DATE: 20th June 1988 ** ** MODIFICATION HISTORY: **-- **/ /* ** ** INCLUDE FILES ** **/ #include "stdio.h" #include "MrmAppl.h" #include "Banner" /* ** ** MACRO DEFINITIONS ** **/ /* * now our runtime data structures */ extern Bnr$_Blk Bnr; extern Clk$_Blk Clk; extern GC BannerGC; extern XGCValues GcValues; extern void BannerSignalError(); void BannerCubeRotationSwitch (); void BannerCubeSetup (); void BannerCubeRefresh (); void BannerCube (); static int cube_init = 0; static int cube_paint = 2; static int cube_cycle = 0; static float one = 1; static float minus1 = -1; static int l[24] = { 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 }; static float init_x0[8] = {-0.5, 0.5, 0.5, -0.5, -0.5, 0.5, 0.5, -0.5}; static float init_y0[8] = {0.5, 0.5, -0.5, -0.5, 0.5, 0.5, -0.5, -0.5}; static float init_z0[8] = {-0.5, -0.5, -0.5, -0.5, 0.5, 0.5, 0.5, 0.5}; static int rotation_switch_constant = 10; /* Factors, alpha=beta=theta=1.2 */ static float rtc = 0.99978068; /* cos(2*pi*theta/360) */ static float rts = 0.02094242; /* sin(2*pi*theta/360) */ static float rac = 0.99978068; /* cos(2*pi*alpha/360) */ static float ras = 0.02094242; /* sin(2*pi*alpha/360) */ static float rbc = 0.99978068; /* cos(2*pi*beta/360) */ static float rbs = 0.02094242; /* sin(2*pi*beta/360) */ static int rotation_switch_count, rotation_switch_last; static float cube_zero, cube_minx, cube_maxx, cube_miny, cube_maxy; static float x0[8], y0[8], z0[8]; static float xr[8], yr[8], zr[8]; static float x[8], y[8], xx[8], yy[8]; /* **++ ** FUNCTIONAL DESCRIPTION: ** ** BannerRotationSwitch() ** ** This routine counts donw the rotation switch constant, which controls ** the switching of the cube rotation direction. ** ** FORMAL PARAMETERS: ** ** none ** ** IMPLICIT INPUTS: ** ** none ** ** IMPLICIT OUTPUTS: ** ** none ** ** COMPLETION CODES: ** ** none ** ** SIDE EFFECTS: ** ** none ** **-- **/ void BannerRotationSwitch() { rotation_switch_count++; if (rotation_switch_count == rotation_switch_constant) { rotation_switch_count = 0; if (rotation_switch_last == 0) { rts = minus1 * rts; rotation_switch_last = 1; } else if (rotation_switch_last == 1) { ras = minus1 * ras; rotation_switch_last = 2; } else { rbs = minus1 * rbs; rotation_switch_last = 0; } } } /* **++ ** FUNCTIONAL DESCRIPTION: ** ** BannerCubeSetup () ** ** ** this routine initialises all the banner cube data structures. ** ** FORMAL PARAMETERS: ** ** none ** ** IMPLICIT INPUTS: ** ** none ** ** IMPLICIT OUTPUTS: ** ** none ** ** COMPLETION CODES: ** ** none ** ** SIDE EFFECTS: ** ** none ** **-- **/ void BannerCubeSetup() { int i; cube_zero = Bnr.cube_width/2; if (Bnr.cube_width > Bnr.cube_height) cube_zero = Bnr.cube_height/2; cube_minx = 0; cube_miny = 0; cube_maxx = cube_minx + Bnr.cube_width; cube_maxy = cube_miny + Bnr.cube_height; cube_init = 1; memcpy(&x0[0],&init_x0[0],sizeof(init_x0) ); memcpy(&y0[0],&init_y0[0],sizeof(init_y0) ); memcpy(&z0[0],&init_z0[0],sizeof(init_z0) ); for (i=0; i<=7; i++) { xr[i] = yr[i] = zr[i] = x[i] = y[i] = xx[i] = yy[i] = 0; } Bnr.ws_purged = 0; cube_cycle = 0; } /* **++ ** FUNCTIONAL DESCRIPTION: ** ** BannerCube (); ** ** This rouitne actually draws and rotates the Banner cube. ** ** FORMAL PARAMETERS: ** ** none ** ** IMPLICIT INPUTS: ** ** none ** ** IMPLICIT OUTPUTS: ** ** none ** ** COMPLETION CODES: ** ** none ** ** SIDE EFFECTS: ** ** none ** **-- **/ void BannerCube() { int x_max, x_min, y_max, y_min; int i, j; float zmin; /* * first do the initialisation. */ if (! cube_init) BannerCubeSetup (); /* * Now calculate the new possitions of the cube */ for (i=0; i<=7; i++) { xr[i] = x0[i]; yr[i] = (y0[i] * rbc) + (z0[i] * rbs); zr[i] = (z0[i] * rbc) - (y0[i] * rbs); } for (i=0; i<=7; i++) { x0[i] = (xr[i] * rtc) + (yr[i] * rts); y0[i] = (yr[i] * rtc) - (xr[i] * rts); z0[i] = zr[i]; } for (i=0; i<=7; i++) { xr[i] = (x0[i] * rac) + (z0[i] * ras); yr[i] = y0[i]; zr[i] = (z0[i] * rac) - (x0[i] * ras); } if (cube_cycle++ != cube_paint) return; cube_cycle=0; zmin = 9999.0; for (i=0; i<=7; i++) if (zr[i] < zmin) zmin = zr[i]; for (i=0; i<=7; i++) { if (zmin == zr[i]) /* Interger check */ x[i] = y[i] = minus1; else { x[i] = xr[i]; y[i] = yr[i]; } } BannerCubeRefresh (); memcpy(&xx[0], &x[0], sizeof(xx)); memcpy(&yy[0], &y[0], sizeof(yy)); } /* **++ ** FUNCTIONAL DESCRIPTION: ** ** BannerCubeRefresh (); ** ** This rouitne actually draws and rotates the Banner cube. ** ** FORMAL PARAMETERS: ** ** none ** ** IMPLICIT INPUTS: ** ** none ** ** IMPLICIT OUTPUTS: ** ** none ** ** COMPLETION CODES: ** ** none ** ** SIDE EFFECTS: ** ** none ** **-- **/ void BannerCubeRefresh() { int x_max, x_min, y_max, y_min; int i, j; float zmin; /* * first do the initialisation. */ if (! cube_init) BannerCubeSetup (); GcValues.line_width = 0; XChangeGC (XtDisplay(Bnr.dp_id), BannerGC, GCLineWidth, &GcValues); for (j=0; j<=23; j=j+2) { if ( xx[l[j]] > minus1 && xx[l[j+1]] > minus1) { x_min = cube_minx + (xx[l[j]] * cube_zero) + cube_zero; y_min = cube_miny + (yy[l[j]] * cube_zero) + cube_zero; x_max = cube_minx + (xx[l[j+1]] * cube_zero) + cube_zero; y_max = cube_miny + (yy[l[j+1]] * cube_zero) + cube_zero; XSetForeground (XtDisplay (Bnr.cube_widget), BannerGC, Bnr.background); XSetBackground (XtDisplay (Bnr.cube_widget), BannerGC, Bnr.foreground); XDrawLine (XtDisplay(Bnr.cube_widget), XtWindow(Bnr.cube_widget), BannerGC, x_min, y_min, x_max, y_max); } if ( x[l[j]] > minus1 && x[l[j+1]] > minus1) { x_min = cube_minx + (x[l[j]] * cube_zero) + cube_zero; y_min = cube_miny + (y[l[j]] * cube_zero) + cube_zero; x_max = cube_minx + (x[l[j+1]] * cube_zero) + cube_zero; y_max = cube_miny + (y[l[j+1]] * cube_zero) + cube_zero; XSetBackground (XtDisplay (Bnr.cube_widget), BannerGC, Bnr.background); XSetForeground (XtDisplay (Bnr.cube_widget), BannerGC, Bnr.foreground); XDrawLine (XtDisplay(Bnr.cube_widget), XtWindow(Bnr.cube_widget), BannerGC, x_min, y_min, x_max, y_max); } } }