Mercurial > hg > minc-tools
changeset 44:e584bb49a591
*** empty log message ***
| author | david <david> |
|---|---|
| date | Thu, 10 Dec 1992 12:28:31 +0000 |
| parents | 0a61b54ea2d5 |
| children | a9d27a511517 |
| files | volume_io/Testing/test_graphics.c |
| diffstat | 1 files changed, 58 insertions(+), 46 deletions(-) [+] |
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--- a/volume_io/Testing/test_graphics.c +++ b/volume_io/Testing/test_graphics.c @@ -4,9 +4,6 @@ #define LIGHT_INDEX 0 -#define UPDATE_INTERVAL 0.1 -#define MIN_TIME_BETWEEN_EVENT_PROCESSING 0.01 - main() { Status status; @@ -14,35 +11,36 @@ text_struct text; lines_struct lines; polygons_struct polygons; - static Surfprop spr = { 0.4, 0.5, 0.0, 20.0, 1.0 }; - Point point; + pixels_struct pixels; + static Surfprop spr = { 0.3, 0.5, 0.5, 20.0, 1.0 }; + Point point, centre_of_rotation; Vector normal, light_direction; Event_types event_type; Boolean update_required, done; Status initialize_text(); Status initialize_lines(); - Status begin_adding_points_to_line(); - Status add_point_to_line(); + Status initialize_polygons(); + Status initialize_pixels(); Status delete_lines(); - Status initialize_polygons(); - Status begin_adding_points_to_polygon(); + Status delete_polygons(); + Status delete_pixels(); + Status start_new_polygon(); Status add_point_to_polygon(); - Status delete_polygons(); int key_pressed; int mouse_x, mouse_y; int current_mouse_x, current_mouse_y; int x_position, y_position, x_size, y_size; + int x_pixel, y_pixel; + int i, j, pixels_x_size, pixels_y_size; + int pixels_x_position, pixels_y_position; Real x, y; - Real time_since_last_events; - Real current_time, end_event_processing, previous_event_time; - Real current_realtime_seconds(); - void sleep_program(); Transform modeling_transform; Transform rotate_clockwise_transform; Transform rotate_counter_clockwise_transform; void make_identity_transform(); void make_rotation_transform(); void concat_transforms(); + void make_transform_relative_to_point(); static Point origin = { 0.0, 0.0, 2.0 }; static Vector up_direction = { 0.0, 1.0, 0.0 }; static Vector line_of_sight = { 0.0, 0.0, -1.0 }; @@ -52,6 +50,13 @@ G_set_3D_view( window, &origin, &line_of_sight, &up_direction, 0.01, 4.0, ON, 2.0, 2.0, 2.0 ); + fill_Point( point, -0.3, 0.3, 0.0 ); + G_transform_point( window, &point, MODEL_VIEW, &x_pixel, &y_pixel ); + + (void) printf( "(%g,%g,%g) maps to %d %d in pixels\n", + Point_x(point), Point_y(point), Point_z(point), + x_pixel, y_pixel ); + /* ------- define text to be drawn (text.string filled in later ----- */ fill_Point( point, 10.0, 10.0, 0.0 ); @@ -86,23 +91,42 @@ lines.indices[4] = 0; lines.indices[5] = 3; + /* ------------ define pixels to be drawn ------------- */ + + pixels_x_size = 256; + pixels_y_size = 256; + + status = initialize_pixels( &pixels, pixels_x_size, pixels_y_size, + RGB_PIXEL ); + + for_less( i, 0, pixels_x_size ) + { + for_less( j, 0, pixels_y_size ) + { + PIXEL_RGB_COLOUR(pixels,i,j) = make_Colour( i % 256, j % 256, 0 ); + } + } + + pixels_x_position = 10; + pixels_y_position = 10; + /* ------------ define polygons to be drawn ------------- */ status = initialize_polygons( &polygons, make_Colour(0,255,255), &spr ); - status = begin_adding_points_to_polygon( &polygons ); + status = start_new_polygon( &polygons ); fill_Point( point, -0.3, -0.3, 0.0 ); - fill_Vector( normal, -1.0, -1.0, 1.0 ); + fill_Vector( normal, -0.3, -0.3, 1.0 ); status = add_point_to_polygon( &polygons, &point, &normal ); fill_Point( point, 0.3, -0.3, 0.0 ); - fill_Vector( normal, 1.0, -1.0, 1.0 ); + fill_Vector( normal, 0.3, -0.3, 1.0 ); status = add_point_to_polygon( &polygons, &point, &normal ); fill_Point( point, 0.3, 0.3, 0.0 ); - fill_Vector( normal, 1.0, 1.0, 1.0 ); + fill_Vector( normal, 0.3, 0.3, 1.0 ); status = add_point_to_polygon( &polygons, &point, &normal ); fill_Point( point, -0.3, 0.3, 0.0 ); - fill_Vector( normal, -1.0, 1.0, 1.0 ); + fill_Vector( normal, -0.3, 0.3, 1.0 ); status = add_point_to_polygon( &polygons, &point, &normal ); /* ------------ define lights ----------------- */ @@ -125,31 +149,21 @@ make_rotation_transform( -5.0 * DEG_TO_RAD, Y, &rotate_counter_clockwise_transform ); + fill_Point( centre_of_rotation, 0.5, 0.5, 0.0 ); + make_transform_relative_to_point( ¢re_of_rotation, + &rotate_clockwise_transform, + &rotate_clockwise_transform ); + make_transform_relative_to_point( ¢re_of_rotation, + &rotate_counter_clockwise_transform, + &rotate_counter_clockwise_transform ); + update_required = TRUE; done = FALSE; (void) printf( "Hit middle mouse button to exit\n" ); - previous_event_time = -1000.0; - do { - /* to avoid using cpu time to do a busy wait, go to sleep before - processing events */ - - current_time = current_realtime_seconds(); - time_since_last_events = current_time - previous_event_time; - - if( time_since_last_events < MIN_TIME_BETWEEN_EVENT_PROCESSING ) - { - sleep_program( MIN_TIME_BETWEEN_EVENT_PROCESSING - - time_since_last_events ); - } - - /* process events for up to UPDATE_INTERVAL seconds */ - - end_event_processing = current_time + UPDATE_INTERVAL; - do { event_type = G_get_event( &event_window, &key_pressed, @@ -164,7 +178,6 @@ break; case LEFT_MOUSE_DOWN_EVENT: - (void) printf( "Left mouse DOWN\n" ); concat_transforms( &modeling_transform, &modeling_transform, &rotate_clockwise_transform ); G_set_modeling_transform( window, &modeling_transform ); @@ -172,11 +185,9 @@ break; case LEFT_MOUSE_UP_EVENT: - (void) printf( "Left mouse UP\n" ); break; case RIGHT_MOUSE_DOWN_EVENT: - (void) printf( "Right mouse DOWN\n" ); concat_transforms( &modeling_transform, &modeling_transform, &rotate_counter_clockwise_transform ); G_set_modeling_transform( window, &modeling_transform ); @@ -184,7 +195,6 @@ break; case RIGHT_MOUSE_UP_EVENT: - (void) printf( "Right mouse UP\n" ); break; case MIDDLE_MOUSE_DOWN_EVENT: @@ -218,16 +228,16 @@ break; } } - } - while( event_type != NO_EVENT && - current_realtime_seconds() < end_event_processing ); - - previous_event_time = current_realtime_seconds(); + } /* break to do update when no events */ + while( event_type != NO_EVENT ); /* if one or more events caused an update, redraw the screen */ if( update_required ) { + G_draw_pixels( window, pixels_x_position, pixels_y_position, + &pixels ); + G_set_view_type( window, MODEL_VIEW ); G_draw_polygons( window, &polygons ); G_draw_lines( window, &lines ); @@ -247,6 +257,8 @@ status = delete_polygons( &polygons ); + status = delete_pixels( &pixels ); + status = G_delete_window( window ); return( status != OK );