void
DrawGeoBitmap(const RawBitmap &bitmap, PixelSize bitmap_size,
const GeoBounds &bounds,
const Projection &projection)
{
assert(bounds.IsValid());
const BulkPixelPoint vertices[] = {
projection.GeoToScreen(bounds.GetNorthWest()),
projection.GeoToScreen(bounds.GetNorthEast()),
projection.GeoToScreen(bounds.GetSouthWest()),
projection.GeoToScreen(bounds.GetSouthEast()),
};
const ScopeVertexPointer vp(vertices);
const GLTexture &texture = bitmap.BindAndGetTexture();
const PixelSize allocated = texture.GetAllocatedSize();
const GLfloat src_x = 0, src_y = 0, src_width = bitmap_size.cx,
src_height = bitmap_size.cy;
GLfloat x0 = src_x / allocated.cx;
GLfloat y0 = src_y / allocated.cy;
GLfloat x1 = (src_x + src_width) / allocated.cx;
GLfloat y1 = (src_y + src_height) / allocated.cy;
const GLfloat coord[] = {
x0, y0,
x1, y0,
x0, y1,
x1, y1,
};
#ifdef USE_GLSL
OpenGL::texture_shader->Use();
glEnableVertexAttribArray(OpenGL::Attribute::TEXCOORD);
glVertexAttribPointer(OpenGL::Attribute::TEXCOORD, 2, GL_FLOAT, GL_FALSE,
0, coord);
#else
const GLEnable<GL_TEXTURE_2D> scope;
OpenGL::glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, 0, coord);
#endif
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
#ifdef USE_GLSL
glDisableVertexAttribArray(OpenGL::Attribute::TEXCOORD);
OpenGL::solid_shader->Use();
#else
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
#endif
}
FlatBoundingBox
OrderedTask::GetBoundingBox(const GeoBounds &bounds) const
{
if (!TaskSize()) {
// undefined!
return FlatBoundingBox(FlatGeoPoint(0,0),FlatGeoPoint(0,0));
}
FlatGeoPoint ll = task_projection.ProjectInteger(bounds.GetSouthWest());
FlatGeoPoint lr = task_projection.ProjectInteger(bounds.GetSouthEast());
FlatGeoPoint ul = task_projection.ProjectInteger(bounds.GetNorthWest());
FlatGeoPoint ur = task_projection.ProjectInteger(bounds.GetNorthEast());
FlatGeoPoint fmin(std::min(ll.longitude, ul.longitude),
std::min(ll.latitude, lr.latitude));
FlatGeoPoint fmax(std::max(lr.longitude, ur.longitude),
std::max(ul.latitude, ur.latitude));
// note +/- 1 to ensure rounding keeps bb valid
fmin.longitude -= 1; fmin.latitude -= 1;
fmax.longitude += 1; fmax.latitude += 1;
return FlatBoundingBox (fmin, fmax);
}