// Called on a decorator to generate any required per-element data for a newly decorated element.
DecoratorDataHandle DecoratorTiledImage::GenerateElementData(Element* element)
{
// Calculate the tile's dimensions for this element.
tile.CalculateDimensions(element, *GetTexture(tile.texture_index));
Geometry* data = new Geometry(element);
data->SetTexture(GetTexture());
// Generate the geometry for the tile.
tile.GenerateGeometry(data->GetVertices(), data->GetIndices(), element, Vector2f(0, 0), element->GetBox().GetSize(Box::PADDING), tile.GetDimensions(element));
return reinterpret_cast<DecoratorDataHandle>(data);
}
// Called on a decorator to generate any required per-element data for a newly decorated element.
DecoratorDataHandle DecoratorTiledImage::GenerateElementData(Element* element)
{
// Calculate the tile's dimensions for this element.
tile.CalculateDimensions(element, *GetTexture(tile.texture_index));
Geometry* data = new Geometry(element);
data->SetTexture(GetTexture());
Vector2f dest = element->GetBox().GetSize(Box::PADDING);
Vector2f source = tile.GetDimensions(element);
// Generate the geometry for the tile.
switch(tile.scaling_mode) {
case IGNORE /* default */: tile.GenerateGeometry(data->GetVertices(), data->GetIndices(), element, Vector2f(0, 0), dest, source, color_multiplier); break;
case FILL:
case FIT: {
Vector2f offset(0, 0); float f;
switch(tile.scaling_mode) {
case FILL: {
RenderInterface* render_interface = element->GetRenderInterface();
Vector2i texture_dimensions = GetTexture(tile.texture_index)->GetDimensions(render_interface);
f = max(dest.y / source.y, dest.x / source.x);
}; break;
case FIT:
f = min(dest.y / source.y, dest.x / source.x);
source *= f;
offset.x = (dest.x - source.x)/2;
offset.y = (dest.y - source.y)/2;
dest = source;
break;
}
tile.GenerateGeometry(data->GetVertices(), data->GetIndices(), element, offset, dest, source, color_multiplier);
}; break;
case CENTER:
Vector2f offset(0, 0);
Vector2i texture_dimension;
if (!tile.texcoords_absolute[0][0] || !tile.texcoords_absolute[1][0] || !tile.texcoords_absolute[0][1] || !tile.texcoords_absolute[1][1]) {
RenderInterface* render_interface = element->GetRenderInterface();
texture_dimension = GetTexture(tile.texture_index)->GetDimensions(render_interface);
}
if (source.x > dest.x) { // crop width of image
float diff_begin = (source.x - dest.x)/2, diff_end = diff_begin;
if (!tile.texcoords_absolute[0][0] || !tile.texcoords_absolute[1][0]) {
if (!tile.texcoords_absolute[0][0]) diff_begin /= texture_dimension.x;
if (!tile.texcoords_absolute[1][0]) diff_end /= texture_dimension.x;
}
tile.texcoords[0].x += diff_begin; // -s-begin
tile.texcoords[1].x -= diff_end; // -s-end
source.x = dest.x;
} else { // center image
offset.x = (dest.x - source.x)/2;
dest.x = source.x;
}
if (source.y > dest.y) { // crop height of image
float diff_begin = (source.y - dest.y)/2, diff_end = diff_begin;
if (!tile.texcoords_absolute[0][1] || !tile.texcoords_absolute[1][1]) {
if (!tile.texcoords_absolute[0][1]) diff_begin /= texture_dimension.y;
if (!tile.texcoords_absolute[1][1]) diff_end /= texture_dimension.y;
}
tile.texcoords[0].y += diff_begin; // -s-begin
tile.texcoords[1].y -= diff_end; // -s-end
source.y = dest.y;
} else { // center image
offset.y = (dest.y - source.y)/2;
dest.y = source.y;
}
tile.GenerateGeometry(data->GetVertices(), data->GetIndices(), element, offset, dest, source, color_multiplier);
break;
}
return reinterpret_cast<DecoratorDataHandle>(data);
}