gm3Image Struct Reference

Structure representing the 2D projected output of a 3D scene. More...

#include <image.h>

Data Fields
gmPos *	vertices
gmColor *	colors
size_t *	triangles
double *	depths
size_t	n_vertices
size_t	n_colors
size_t	n_triangles
size_t	cap_vertices
size_t	cap_colors
size_t	cap_triangles
size_t	cap_depths
struct {
gm3Pos *   world_verts
size_t   cap_world
void *   sort_buf
size_t   cap_sort
double *   tri
gmColor *   cols
size_t   cap_tri
}	_internal

Detailed Description

Structure representing the 2D projected output of a 3D scene.

This struct acts as a buffer containing the 2D screen-space coordinates, colors, and indices of triangles generated by the 3D projection pipeline. It also manages internal scratch buffers for optimization.

Field Documentation

[struct]

struct { ... } gm3Image::_internal

Internal scratch buffers for rendering optimizations.

cap_colors

size_t gm3Image::cap_colors

Allocated capacity for colors array.

cap_depths

size_t gm3Image::cap_depths

Allocated capacity for depths array.

cap_sort

size_t gm3Image::cap_sort

Allocated capacity for sort_buf.

cap_tri

size_t gm3Image::cap_tri

Allocated capacity for tri and cols.

cap_triangles

size_t gm3Image::cap_triangles

Allocated capacity for triangles (indices) array.

cap_vertices

size_t gm3Image::cap_vertices

Allocated capacity for vertices array.

cap_world

size_t gm3Image::cap_world

Allocated capacity for world_verts.

colors

gmColor* gm3Image::colors

Array of colors, one per triangle.

cols

gmColor* gm3Image::cols

Temp storage for sorted triangle colors.

depths

double* gm3Image::depths

Array of average Z-depths, one per triangle, used for sorting.

n_colors

size_t gm3Image::n_colors

Current number of colors stored (should match n_triangles).

n_triangles

size_t gm3Image::n_triangles

Current number of triangles stored.

n_vertices

size_t gm3Image::n_vertices

Current number of vertices stored.

sort_buf

void* gm3Image::sort_buf

Temp storage for sorting triangles by depth.

tri

double* gm3Image::tri

Temp storage for sorted triangle vertex data (x1,y1,x2,y2,x3,y3).

triangles

size_t* gm3Image::triangles

Array of vertex indices, 3 per triangle.

vertices

gmPos* gm3Image::vertices

Array of 2D screen-space vertex positions.

world_verts

gm3Pos* gm3Image::world_verts

Temp storage for 3D world coordinates before projection.

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The documentation for this struct was generated from the following file:

• lib/gama/3d/image.h