void roadmap_canvas3_ogl_prepare() {
if (!isInitialized) {
isInitialized= TRUE;
}
if ( !is_canvas_ready() )
return;
roadmap_canvas3_ogl_updateScale(roadmap_math_get_zoom());
roadmap_canvas_ogl_rotateMe(0);
}
void roadmap_layer_adjust (void) {
int i;
int j;
int k;
int future_thickness;
int thickness;
struct roadmap_canvas_category *category;
if (last_zoom == roadmap_math_get_zoom()) return;
if (!RoadMapCategoryCount) return;
last_zoom = roadmap_math_get_zoom();
for (i = RoadMapCategoryCount; i > 0; --i) {
category = RoadMapCategory + i;
for (k=0; k<LAYER_PROJ_AREAS; k++) {
if (roadmap_layer_is_visible(i, k)) {
thickness =
roadmap_math_thickness (category->thickness,
category->declutter,
k+1,
category->pen_count > 1);
if (thickness <= 0) thickness = 1;
#ifdef VIEW_MODE_3D_OGL
if (roadmap_screen_get_view_mode() == VIEW_MODE_3D)
thickness *= 2;
#endif
if (thickness > 40) thickness = 40;
#if !defined (OPENGL) && !defined (J2ME)
if (roadmap_screen_fast_refresh()) {
if (thickness && (thickness <= 4))
thickness = 1;
#elif defined(J2ME)
if (thickness && (thickness <= 4)) {
thickness = 1;
} else
#endif
{
/* As a matter of taste, I do dislike roads with a filler
* of 1 pixel. Lets force at least a filler of 2.
*/
future_thickness = thickness;
for (j = 1; j < category->pen_count; ++j) {
if (category->delta_thickness[j] > 0) break;
future_thickness = category->thickness + category->delta_thickness[j];
if (future_thickness == 1) {
thickness += 1;
}
}
}
#if !defined (OPENGL) && !defined (J2ME)
}
#endif
if (k == 0) {
roadmap_plugin_adjust_layer (i, thickness, category->pen_count);
}
if (thickness > 0) {
roadmap_canvas_select_pen (category->pen[k][0]);
roadmap_canvas_set_thickness (thickness);
}
category->in_use[k][0] = 1;
for (j = 1; j < category->pen_count; ++j) {
/* The previous thickness was already the minimum:
* the pens that follow should not be used.
*/
if (thickness <= 1) {
category->in_use[k][j] = 0;
continue;
}
if (category->delta_thickness[j] < 0) {
thickness += category->delta_thickness[j];
#ifdef VIEW_MODE_3D_OGL
if (roadmap_screen_get_view_mode() == VIEW_MODE_3D/* &&
!roadmap_screen_fast_refresh()*/)
thickness += category->delta_thickness[j]*2; //increase the delta
#endif
} else {
/* Don't end with a road mostly drawn with the latter
* pen.
*/
if ((category->delta_thickness[j] >= thickness / 2) && (j != 2)) {
category->in_use[k][j] = 0;
thickness = 1;
continue;
}
thickness = category->delta_thickness[j];
}
/* If this pen is not visible, there is no reason
* to draw it.
*/
if (thickness < 1) {
category->in_use[k][j] = 0;
continue;
}
roadmap_canvas_select_pen (category->pen[k][j]);
roadmap_canvas_set_thickness (thickness);
category->in_use[k][j] = 1;
}
}
}
}
}
