int draw_outline(void)
{
int raster_size;
row = col = top = 0; /* get started for read of first */
bottom = 1; /* line from raster map */
scan_length = read_next();
k = 0;
raster_size = Rast_cell_size(map_type);
while (read_next()) { /* read rest of file, one row at *//* a time */
n1 = Rast_row_to_northing((double)row - 1., &(PS.w));
n2 = Rast_row_to_northing((double)row, &(PS.w));
n3 = Rast_row_to_northing((double)row + 1., &(PS.w));
for (col = 0; col < scan_length - 1; col++) {
e1 = Rast_col_to_easting((double)col - 1., &(PS.w));
e2 = Rast_col_to_easting((double)col, &(PS.w));
e3 = Rast_col_to_easting((double)col + 1., &(PS.w));
tl = G_incr_void_ptr(buffer[top], col * raster_size);
/* top left in window */
tr = G_incr_void_ptr(buffer[top], (col + 1) * raster_size);
/* top right in window */
bl = G_incr_void_ptr(buffer[bottom], col * raster_size);
/* bottom left in window */
br = G_incr_void_ptr(buffer[bottom], (col + 1) * raster_size);
/* bottom right in window */
draw_boundaries();
if (k == 3)
k = 0;
}
row++;
}
return 0;
} /* draw_outlines */
void Button::draw_focus()
{
STACKTRACE;
if (!draw(bmp_focus)) {
draw_default();
draw_boundaries(bmp_default);
}
}
void TriMeshView::draw_mesh()
{
// These are static so the memory isn't reallocated on every frame
static vector<float> ndotv, kr;
static vector<float> sctest_num, sctest_den, shtest_num;
static vector<float> q1, Dt1q1;
static vector<vec2> t1;
compute_perview(ndotv, kr, sctest_num, sctest_den, shtest_num,
q1, t1, Dt1q1, true);
// compute_perview(ndotv, kr);
// Enable antialiased lines
glEnable(GL_POINT_SMOOTH);
glEnable(GL_LINE_SMOOTH);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// 外部轮廓,仅使用ndotv，不做其它测试
if (isDrawSilhouette)
draw_silhouette(ndotv);
// The mesh itself, possibly colored and/or lit
glDisable(GL_BLEND);
draw_base_mesh();
glEnable(GL_BLEND);
if(isDrawRVFaces)
rv_fLines.drawFaces(triMesh, vec4(0.0f, 0.8f, 0.0f, 1.0f));
if(isDrawRVLines)
rv_fLines.drawLines();
if(isDrawOCFaces)
c_fLines.drawFaces(triMesh, vec4(0.7f, 0.5f, 0.5f, 1.0f));
if(isDrawOCLines)
c_fLines.drawLines();
if(isDrawApparentRidges)
draw_apparent_ridges(ndotv, q1, t1, Dt1q1, ar_thresh / sqr(feature_size));
if(isDrawOccludingContours)
draw_occluding_contours(ndotv, kr);
if(isDrawSuggestiveContours)
draw_suggestive_contours(ndotv, kr, sctest_num, sctest_den);
if(isDrawRidges)
draw_ridges(ndotv, rv_thresh / feature_size);
if(isDrawValleys)
draw_valleys(ndotv, rv_thresh / feature_size);
if(isDrawBoundaries)
draw_boundaries(false);
glDisable(GL_LINE_SMOOTH);
glDisable(GL_POINT_SMOOTH);
glDisable(GL_BLEND);
glDepthMask(GL_TRUE);
}