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nr-gradient.h

#ifndef __NR_GRADIENT_H__
#define __NR_GRADIENT_H__

/*
 * Pixel buffer rendering library
 *
 * Authors:
 *   Lauris Kaplinski <lauris@kaplinski.com>
 *
 * This code is in public domain
 */

#include <libnr/nr-matrix.h>
#include <libnr/nr-render.h>

#define NR_GRADIENT_VECTOR_LENGTH 1024

enum {
      NR_GRADIENT_SPREAD_PAD,
      NR_GRADIENT_SPREAD_REFLECT,
      NR_GRADIENT_SPREAD_REPEAT
};

/* Radial */

struct NRRGradientRenderer {
      NRRenderer renderer;
      const unsigned char *vector;
      unsigned int spread;
      NRMatrix px2gs;
      float cx, cy;
      float fx, fy;
      float r;
      float C;
};

NRRenderer *nr_rgradient_renderer_setup (NRRGradientRenderer *rgr,
                               const unsigned char *cv,
                               unsigned int spread,
                               const NRMatrix *gs2px,
                               float cx, float cy,
                               float fx, float fy,
                               float r);



#endif

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