Dogcows Code - chaz/rasterize/blob - raster.h

   1
   2 /*
   3  * CS5600 University of Utah
   4  * Charles McGarvey
   5  * mcgarvey@eng.utah.edu
   6  */
   7
   8 #ifndef _RASTER_H_
   9 #define _RASTER_H_
  10
  11 #include "color.h"
  12 #include "common.h"
  13 #include "light.h"
  14 #include "tri.h"
  15
  16
  17 /*
  18  * A pixel map for storing and manipulating a 2D grid of color values.
  19  */
  20 typedef struct raster raster_t;
  21
  22
  23 /*
  24  * Create a new raster on the heap.
  25  */
  26 raster_t* raster_alloc(int width, int height, color_t fill);
  27
  28 /*
  29  * Free up the memory associated with the raster.
  30  */
  31 void raster_destroy(raster_t* p);
  32
  33
  34 /*
  35  * Print some optimization statistics.
  36  */
  37 void raster_printstats(raster_t* p);
  38
  39
  40 /*
  41  * Set the viewport rectangle.  This effectively sets up a clipping rectangle
  42  * where nothing is drawn outside of the rectangle.  The default viewport is
  43  * [0, 0, width, height], or the entire raster area.
  44  */
  45 void raster_viewport(raster_t* p, int x, int y, int width, int height);
  46
  47 /*
  48  * Set the model matrix.  This positions the model, providing the
  49  * transformation for converting to eye coordinates.
  50  */
  51 void raster_model(raster_t* p, const mat_t* transform);
  52
  53 /*
  54  * Set the view matrix.  This positions the camera, providing the
  55  * transformation for converting to world coordinates.
  56  */
  57 void raster_view(raster_t* p, const mat_t* transform);
  58
  59 /*
  60  * Set the projection matrix.  This provides the transformation for converting
  61  * to canonical coordinates.
  62  */
  63 void raster_projection(raster_t* p, const mat_t* transform);
  64
  65
  66 /*
  67  * Set the location of the viewer in world coordinates.  This is used in
  68  * specular lighting calculations.
  69  */
  70 void raster_eye(raster_t* p, vec_t eye);
  71
  72 /*
  73  * Add a light to the scene.
  74  */
  75 void raster_light(raster_t* p, light_t light);
  76
  77
  78 /*
  79  * Save the raster to a PPM file.
  80  */
  81 int raster_export_ppm(const raster_t* p, const char* filename);
  82
  83 /*
  84  * Save the raster to a BMP file.
  85  */
  86 int raster_export_bmp(const raster_t* p, const char* filename);
  87
  88
  89 /*
  90  * Fill the entire raster with a solid color and reset the raster statistics.
  91  */
  92 void raster_clear(raster_t* p, color_t fill);
  93
  94 /*
  95  * Draw a smooth gradient triangle to the raster.
  96  */
  97 void raster_draw_tri(raster_t* p, const tri_t* triangle);
  98
  99
 100 #endif // _RASTER_H_
 101