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-rw-r--r--src/gallium/state_trackers/vega/bezier.h81
1 files changed, 0 insertions, 81 deletions
diff --git a/src/gallium/state_trackers/vega/bezier.h b/src/gallium/state_trackers/vega/bezier.h
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--- a/src/gallium/state_trackers/vega/bezier.h
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-/**************************************************************************
- *
- * Copyright 2009 VMware, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-
-#ifndef BEZIER_H
-#define BEZIER_H
-
-struct polygon;
-struct matrix;
-
-struct bezier {
- float x1, y1;
- float x2, y2;
- float x3, y3;
- float x4, y4;
-};
-
-
-#define BEZIER_DEFAULT_ERROR 0.01
-
-/* kappa as being l of a circle with r = 1, we can emulate any
- * circle of radius r by using the formula
- * l = r . kappa
- * More at:
- * http://www.whizkidtech.redprince.net/bezier/circle/ */
-#define KAPPA 0.5522847498
-
-void bezier_init(struct bezier *bez,
- float x1, float y1,
- float x2, float y2,
- float x3, float y3,
- float x4, float y4);
-
-struct polygon *bezier_to_polygon(struct bezier *bez);
-void bezier_add_to_polygon(const struct bezier *bez,
- struct polygon *poly);
-float bezier_length(struct bezier *bez, float error);
-void bezier_transform(struct bezier *bez,
- struct matrix *mat);
-
-int bezier_translate_by_normal(struct bezier *b,
- struct bezier *curves,
- int max_curves,
- float normal_len,
- float threshold);
-void bezier_bounds(const struct bezier *bez,
- float *bounds/*x/y/width/height*/);
-void bezier_exact_bounds(const struct bezier *bez,
- float *bounds/*x/y/width/height*/);
-
-void bezier_start_tangent(const struct bezier *bez,
- float *tangent);
-
-void bezier_point_at_length(struct bezier *bez, float length,
- float *point, float *normal);
-void bezier_point_at_t(struct bezier *bez, float t,
- float *point, float *normal);
-
-#endif