bitmaps05.c

////////////////////////////////////////////////////////////////////////////////
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// / /_(__  ) /__/ /_/ / /_/ /  __/  ____/ /  
// \__/____/\___/\____/ .___/\___/  /_____/   
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//     
// bitmaps05.c
// - Illustration of the bitmap drawing functions.
// - Draw circles on three memory bitmaps.
// - Cycle between the bitmaps to create an illusion of movement.
////////////////////////////////////////////////////////////////////////////////


#include <tscope5.h>
#include <math.h>

int main()
{
    // open a display
    double w, h;
    ts5_install_display();  
    ts5_get_display_size(1, &w, &h);
    
    
    // create three memory bitmaps
    TS5_BITMAP *map1 = ts5_alloc_bitmap(w, h);
    TS5_BITMAP *map2 = ts5_alloc_bitmap(w, h);
    TS5_BITMAP *map3 = ts5_alloc_bitmap(w, h);

    // draw concentric circles on each bitmap
    // 'start' diameter differs between the three bitmaps
    ts5_set_drawing_thickness(2);
    double i;
    for (i=0; i<(sqrt(w*w+h*h)); i+=6) {
        ts5_set_drawing_target(map1);
        ts5_draw_circle(0.0, 0.0, i);
        ts5_set_drawing_target(map2);
        ts5_draw_circle(0.0, 0.0, i+2.0);
        ts5_set_drawing_target(map3);
        ts5_draw_circle(0.0, 0.0, i+4.0);
    }

    // set the display as the drawing target
    ts5_set_active_display(1);
    
    
    // alternate between the three bitmaps
    for (i=0; i<100; i++) {
        
        ts5_clear_display();
        ts5_draw_bitmap(map1, 0.0, 0.0);
        ts5_flip_display();
        ts5_wait(0.05);
        
        ts5_clear_display();
        ts5_draw_bitmap(map2, 0.0, 0.0);
        ts5_flip_display();
        ts5_wait(0.05);

        ts5_clear_display();
        ts5_draw_bitmap(map3, 0.0, 0.0);
        ts5_flip_display();
        ts5_wait(0.05); 
    }
    
    // wait for a click
    ts5_draw_mouse_button(w/2.0-50.0, -h/2.0+50.0);
        
    // free the bitmaps
    ts5_free_bitmap(map1);
    ts5_free_bitmap(map2);
    ts5_free_bitmap(map3);
    
    return 0;
}