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test-cogl-path: Add tests for changing the fill rule

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This creates a path with an outer clockwise and two internal sub
paths, one clockwise and one counter-clockwise. The path is then
painted twice, once with each fill rule.
This commit is contained in:
Neil Roberts 2010-06-23 17:17:40 +01:00
parent 3a1456f34e
commit 6341ba98f9
1 changed files with 31 additions and 0 deletions
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31
tests/conform/test-cogl-path.c
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@ -147,6 +147,35 @@ on_paint (ClutterActor *actor, TestState *state)
cogl_path_rectangle (BLOCK_SIZE / 2, BLOCK_SIZE / 2, BLOCK_SIZE, BLOCK_SIZE);
draw_path_at (9, 0);
/* Draw a clockwise outer path */
cogl_path_move_to (0, 0);
cogl_path_line_to (BLOCK_SIZE, 0);
cogl_path_line_to (BLOCK_SIZE, BLOCK_SIZE);
cogl_path_line_to (0, BLOCK_SIZE);
cogl_path_close ();
/* Add a clockwise sub path in the upper left quadrant */
cogl_path_move_to (0, 0);
cogl_path_line_to (BLOCK_SIZE / 2, 0);
cogl_path_line_to (BLOCK_SIZE / 2, BLOCK_SIZE / 2);
cogl_path_line_to (0, BLOCK_SIZE / 2);
cogl_path_close ();
/* Add a counter-clockwise sub path in the upper right quadrant */
cogl_path_move_to (BLOCK_SIZE / 2, 0);
cogl_path_line_to (BLOCK_SIZE / 2, BLOCK_SIZE / 2);
cogl_path_line_to (BLOCK_SIZE, BLOCK_SIZE / 2);
cogl_path_line_to (BLOCK_SIZE, 0);
cogl_path_close ();
/* Retain the path for the next test */
path_a = cogl_handle_ref (cogl_get_path ());
draw_path_at (10, 0);
/* Draw the same path again with the other fill rule */
cogl_set_path (path_a);
cogl_path_set_fill_rule (COGL_PATH_FILL_RULE_NON_ZERO);
draw_path_at (11, 0);
cogl_handle_unref (path_a);
verify_block (0, 0, 0x8 /* bottom right */);
verify_block (1, 0, 0xf /* all of them */);
verify_block (2, 0, 0x8 /* bottom right */);
@ -157,6 +186,8 @@ on_paint (ClutterActor *actor, TestState *state)
verify_block (7, 0, 0x9 /* top_left and bottom right */);
verify_block (8, 0, 0xe /* all but top left */);
verify_block (9, 0, 0x7 /* all but bottom right */);
verify_block (10, 0, 0xc /* bottom two */);
verify_block (11, 0, 0xd /* all but top right */);
/* Comment this out if you want visual feedback of what this test
* paints.