pixman mesa git update 16 Feb 2011

1 files changed, 0 insertions, 198 deletions

diff --git a/pixman/test/radial-test.c b/pixman/test/radial-test.c
deleted file mode 100644
index 5d716c339..000000000
--- a/pixman/test/radial-test.c
+++ /dev/null
@@ -1,198 +0,0 @@
-#include "utils.h"
-#include "gtk-utils.h"
-
-#define NUM_GRADIENTS 7
-#define NUM_STOPS 3
-#define NUM_REPEAT 4
-#define SIZE 128
-#define WIDTH (SIZE * NUM_GRADIENTS)
-#define HEIGHT (SIZE * NUM_REPEAT)
-
-/*
- * We want to test all the possible relative positions of the start
- * and end circle:
- *
- *  - The start circle can be smaller/equal/bigger than the end
- *    circle. A radial gradient can be classified in one of these
- *    three cases depending on the sign of dr.
- *
- *  - The smaller circle can be completely inside/internally
- *    tangent/outside (at least in part) of the bigger circle. This
- *    classification is the same as the one which can be computed by
- *    examining the sign of a = (dx^2 + dy^2 - dr^2).
- *
- *  - If the two circles have the same size, neither can be inside or
- *    internally tangent
- *
- * This test draws radial gradients whose circles always have the same
- * centers (0, 0) and (1, 0), but with different radiuses. From left
- * to right:
- *
- * - Small start circle completely inside the end circle
- *     0.25 -> 1.75; dr =  1.5 > 0; a = 1 - 1.50^2 < 0
- *
- * - Small start circle internally tangent to the end circle
- *     0.50 -> 1.50; dr =  1.0 > 0; a = 1 - 1.00^2 = 0
- *
- * - Small start circle outside of the end circle
- *     0.50 -> 1.00; dr =  0.5 > 0; a = 1 - 0.50^2 > 0
- *
- * - Start circle with the same size as the end circle
- *     1.00 -> 1.00; dr =  0.0 = 0; a = 1 - 0.00^2 > 0
- *
- * - Small end circle outside of the start circle
- *     1.00 -> 0.50; dr = -0.5 > 0; a = 1 - 0.50^2 > 0
- *
- * - Small end circle internally tangent to the start circle
- *     1.50 -> 0.50; dr = -1.0 > 0; a = 1 - 1.00^2 = 0
- *
- * - Small end circle completely inside the start circle
- *     1.75 -> 0.25; dr = -1.5 > 0; a = 1 - 1.50^2 < 0
- *
- */
-
-const static double radiuses[NUM_GRADIENTS] = {
-    0.25,
-    0.50,
-    0.50,
-    1.00,
-    1.00,
-    1.50,
-    1.75
-};
-
-#define double_to_color(x)					\
-    (((uint32_t) ((x)*65536)) - (((uint32_t) ((x)*65536)) >> 16))
-
-#define PIXMAN_STOP(offset,r,g,b,a)		\
-    { pixman_double_to_fixed (offset),		\
-	{					\
-	double_to_color (r),			\
-	double_to_color (g),			\
-	double_to_color (b),			\
-	double_to_color (a)			\
-	}					\
-    }
-
-static const pixman_gradient_stop_t stops[NUM_STOPS] = {
-    PIXMAN_STOP (0.0,        1, 0, 0, 0.75),
-    PIXMAN_STOP (0.70710678, 0, 1, 0, 0),
-    PIXMAN_STOP (1.0,        0, 0, 1, 1)
-};
-
-static pixman_image_t *
-create_radial (int index)
-{
-    pixman_point_fixed_t p0, p1;
-    pixman_fixed_t r0, r1;
-    double x0, x1, radius0, radius1, left, right, center;
-
-    x0 = 0;
-    x1 = 1;
-    radius0 = radiuses[index];
-    radius1 = radiuses[NUM_GRADIENTS - index - 1];
-
-    /* center the gradient */
-    left = MIN (x0 - radius0, x1 - radius1);
-    right = MAX (x0 + radius0, x1 + radius1);
-    center = (left + right) * 0.5;
-    x0 -= center;
-    x1 -= center;
-
-    /* scale to make it fit within a 1x1 rect centered in (0,0) */
-    x0 *= 0.25;
-    x1 *= 0.25;
-    radius0 *= 0.25;
-    radius1 *= 0.25;
-
-    p0.x = pixman_double_to_fixed (x0);
-    p0.y = pixman_double_to_fixed (0);
-
-    p1.x = pixman_double_to_fixed (x1);
-    p1.y = pixman_double_to_fixed (0);
-
-    r0 = pixman_double_to_fixed (radius0);
-    r1 = pixman_double_to_fixed (radius1);
-
-    return pixman_image_create_radial_gradient (&p0, &p1,
-						r0, r1,
-						stops, NUM_STOPS);
-}
-
-static const pixman_repeat_t repeat[NUM_REPEAT] = {
-    PIXMAN_REPEAT_NONE,
-    PIXMAN_REPEAT_NORMAL,
-    PIXMAN_REPEAT_REFLECT,
-    PIXMAN_REPEAT_PAD
-};
-
-int
-main (int argc, char **argv)
-{
-    pixman_transform_t transform;
-    pixman_image_t *src_img, *dest_img;
-    int i, j;
-
-    enable_fp_exceptions ();
-
-    dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,
-					 WIDTH, HEIGHT,
-					 NULL, 0);
-
-    pixman_transform_init_identity (&transform);
-
-    /*
-     * The create_radial() function returns gradients centered in the
-     * origin and whose interesting part fits a 1x1 square. We want to
-     * paint these gradients on a SIZExSIZE square and to make things
-     * easier we want the origin in the top-left corner of the square
-     * we want to see.
-     */
-    pixman_transform_translate (NULL, &transform,
-				pixman_double_to_fixed (0.5),
-				pixman_double_to_fixed (0.5));
-
-    pixman_transform_scale (NULL, &transform,
-			    pixman_double_to_fixed (SIZE),
-			    pixman_double_to_fixed (SIZE));
-
-    /*
-     * Gradients are evaluated at the center of each pixel, so we need
-     * to translate by half a pixel to trigger some interesting
-     * cornercases. In particular, the original implementation of PDF
-     * radial gradients tried to divide by 0 when using this transform
-     * on the "tangent circles" cases.
-     */
-    pixman_transform_translate (NULL, &transform,
-				pixman_double_to_fixed (0.5),
-				pixman_double_to_fixed (0.5));
-
-    for (i = 0; i < NUM_GRADIENTS; i++)
-    {
-	src_img = create_radial (i);
-	pixman_image_set_transform (src_img, &transform);
-
-	for (j = 0; j < NUM_REPEAT; j++)
-	{
-	    pixman_image_set_repeat (src_img, repeat[j]);
-
-	    pixman_image_composite32 (PIXMAN_OP_OVER,
-				      src_img,
-				      NULL,
-				      dest_img,
-				      0, 0,
-				      0, 0,
-				      i * SIZE, j * SIZE,
-				      SIZE, SIZE);
-
-	}
-
-	pixman_image_unref (src_img);
-    }
-
-    show_image (dest_img);
-
-    pixman_image_unref (dest_img);
-
-    return 0;
-}