/* Compute the revolutions per minute of a gear. */ static void compute_rpm (ModeInfo *mi, gear *g) { double fps, rpf, rps; fps = (MI_PAUSE(mi) == 0 ? 999999 : 1000000.0 / MI_PAUSE(mi)); if (fps > 150) fps = 150; /* let's be reasonable... */ if (fps < 10) fps = 10; rpf = (g->ratio * spin_speed) / 360.0; /* rotations per frame */ rps = rpf * fps; /* rotations per second */ g->rpm = rps * 60; }
ENTRYPOINT void draw_triangle (ModeInfo * mi) { trianglestruct *tp = &triangles[MI_SCREEN(mi)]; int d, d2, i, j, delta; if (!tp->init_now) { draw_mesh(mi, tp, tp->d / 2, MAX_SIZE / tp->d); /* The init_now flag will pop up when the scene is complete. * Cycles specifies how long to wait, in 1/10 secs. TODO: This is wrong for multi-screens *** */ if (tp->init_now) { #ifndef STANDALONE MI_PAUSE(mi) = 2000000; #else if (tp->stage == -1) { XClearWindow(MI_DISPLAY(mi), MI_WINDOW(mi)); if (!mono_p) { free_colors(mi->xgwa.screen, mi->xgwa.colormap, mi->colors, mi->npixels); mi->npixels = get_integer_resource (mi->dpy, "ncolors", "Integer"); make_smooth_colormap (mi->xgwa.screen, mi->xgwa.visual, mi->xgwa.colormap, mi->colors, &mi->npixels, True, &mi->writable_p, True); } } #endif } return; } if (tp->delta[0] > 0) { if (!(++tp->stage)) { tp->h[0][0] = (short int) MAX(0, DISPLACE(0, tp->delta[0])); tp->h[tp->size][0] = (short int) MAX(0, DISPLACE(0, tp->delta[0])); tp->h[0][tp->size] = (short int) MAX(0, DISPLACE(0, tp->delta[0])); } else { d = 2 << (tp->steps - tp->stage); d2 = d / 2; delta = tp->delta[tp->stage - 1]; for (i = 0; i < tp->size; i += d) { for (j = 0; j < (tp->size - i); j += d) { tp->h[i + d2][j] = (short int) DISPLACE(tp->h[i][j] + tp->h[i + d][j], delta); tp->h[i][j + d2] = (short int) DISPLACE(tp->h[i][j] + tp->h[i][j + d], delta); tp->h[i + d2][j + d2] = (short int) DISPLACE(tp->h[i + d][j] + tp->h[i][j + d], delta); } tp->init_now = 0; tp->i = 0; tp->j = 0; tp->d = d; } } } if (tp->stage == tp->steps) { tp->stage = -1; } }