/*************************************************************************
Queues an area of the associated Texture the be drawn on the screen.
Low-level routine not normally used!
*************************************************************************/
void Imageset::draw(GeometryBuffer& buffer, const Rect& source_rect,
const Rect& dest_rect, const Rect* clip_rect,const ColourRect& colours,
QuadSplitMode quad_split_mode) const
{
// get the rect area that we will actually draw to (i.e. perform clipping)
Rect final_rect(clip_rect ? dest_rect.getIntersection(*clip_rect) : dest_rect );
// check if rect was totally clipped
if ((final_rect.getWidth() == 0) || (final_rect.getHeight() == 0))
return;
// Fix bug #45
// Obtain correct scale values from the texture
const float x_scale = d_texture->getTexelScaling().d_x;
const float y_scale = d_texture->getTexelScaling().d_y;
float tex_per_pix_x = source_rect.getWidth() / dest_rect.getWidth();
float tex_per_pix_y = source_rect.getHeight() / dest_rect.getHeight();
// calculate final, clipped, texture co-ordinates
Rect tex_rect((source_rect.d_left + ((final_rect.d_left - dest_rect.d_left) * tex_per_pix_x)) * x_scale,
(source_rect.d_top + ((final_rect.d_top - dest_rect.d_top) * tex_per_pix_y)) * y_scale,
(source_rect.d_right + ((final_rect.d_right - dest_rect.d_right) * tex_per_pix_x)) * x_scale,
(source_rect.d_bottom + ((final_rect.d_bottom - dest_rect.d_bottom) * tex_per_pix_y)) * y_scale);
final_rect.d_left = PixelAligned(final_rect.d_left);
final_rect.d_right = PixelAligned(final_rect.d_right);
final_rect.d_top = PixelAligned(final_rect.d_top);
final_rect.d_bottom = PixelAligned(final_rect.d_bottom);
Vertex vbuffer[6];
// vertex 0
vbuffer[0].position = Vector3(final_rect.d_left, final_rect.d_top, 0.0f);
vbuffer[0].colour_val = colours.d_top_left;
vbuffer[0].tex_coords = Vector2(tex_rect.d_left, tex_rect.d_top);
// vertex 1
vbuffer[1].position = Vector3(final_rect.d_left, final_rect.d_bottom, 0.0f);
vbuffer[1].colour_val = colours.d_bottom_left;
vbuffer[1].tex_coords = Vector2(tex_rect.d_left, tex_rect.d_bottom);
// vertex 2
vbuffer[2].position.d_x = final_rect.d_right;
vbuffer[2].position.d_z = 0.0f;
vbuffer[2].colour_val = colours.d_bottom_right;
vbuffer[2].tex_coords.d_x = tex_rect.d_right;
// top-left to bottom-right diagonal
if (quad_split_mode == TopLeftToBottomRight)
{
vbuffer[2].position.d_y = final_rect.d_bottom;
vbuffer[2].tex_coords.d_y = tex_rect.d_bottom;
}
// bottom-left to top-right diagonal
else
{
vbuffer[2].position.d_y = final_rect.d_top;
vbuffer[2].tex_coords.d_y = tex_rect.d_top;
}
// vertex 3
vbuffer[3].position = Vector3(final_rect.d_right, final_rect.d_top, 0.0f);
vbuffer[3].colour_val = colours.d_top_right;
vbuffer[3].tex_coords = Vector2(tex_rect.d_right, tex_rect.d_top);
// vertex 4
vbuffer[4].position.d_x = final_rect.d_left;
vbuffer[4].position.d_z = 0.0f;
vbuffer[4].colour_val = colours.d_top_left;
vbuffer[4].tex_coords.d_x = tex_rect.d_left;
// top-left to bottom-right diagonal
if (quad_split_mode == TopLeftToBottomRight)
{
vbuffer[4].position.d_y = final_rect.d_top;
vbuffer[4].tex_coords.d_y = tex_rect.d_top;
}
// bottom-left to top-right diagonal
else
{
vbuffer[4].position.d_y = final_rect.d_bottom;
vbuffer[4].tex_coords.d_y = tex_rect.d_bottom;
}
// vertex 5
vbuffer[5].position = Vector3(final_rect.d_right, final_rect.d_bottom, 0.0f);
vbuffer[5].colour_val= colours.d_bottom_right;
vbuffer[5].tex_coords = Vector2(tex_rect.d_right, tex_rect.d_bottom);
// TODO: Remove cast when GeometryBuffer gets it's APIs fixed!
buffer.setActiveTexture((Texture*)d_texture);
buffer.appendGeometry(vbuffer, 6);
}
//----------------------------------------------------------------------------//
void BasicImage::render(GeometryBuffer& buffer, const Rectf& dest_area,
const Rectf* clip_area, const ColourRect& colours) const
{
const QuadSplitMode quad_split_mode(TopLeftToBottomRight);
Rectf dest(dest_area);
// apply rendering offset to the destination Rect
dest.offset(d_scaledOffset);
// get the rect area that we will actually draw to (i.e. perform clipping)
Rectf final_rect(clip_area ? dest.getIntersection(*clip_area) : dest );
// check if rect was totally clipped
if ((final_rect.getWidth() == 0) || (final_rect.getHeight() == 0))
return;
// Obtain correct scale values from the texture
const Vector2f& scale = d_texture->getTexelScaling();
const Vector2f tex_per_pix(d_area.getWidth() / dest.getWidth(), d_area.getHeight() / dest.getHeight());
// calculate final, clipped, texture co-ordinates
const Rectf tex_rect((d_area.d_min + ((final_rect.d_min - dest.d_min) * tex_per_pix)) * scale,
(d_area.d_max + ((final_rect.d_max - dest.d_max) * tex_per_pix)) * scale);
// URGENT FIXME: Shouldn't this be in the hands of the user?
final_rect.d_min.d_x = CoordConverter::alignToPixels(final_rect.d_min.d_x);
final_rect.d_min.d_y = CoordConverter::alignToPixels(final_rect.d_min.d_y);
final_rect.d_max.d_x = CoordConverter::alignToPixels(final_rect.d_max.d_x);
final_rect.d_max.d_y = CoordConverter::alignToPixels(final_rect.d_max.d_y);
Vertex vbuffer[6];
// vertex 0
vbuffer[0].position = Vector3f(final_rect.left(), final_rect.top(), 0.0f);
vbuffer[0].colour_val = colours.d_top_left;
vbuffer[0].tex_coords = Vector2f(tex_rect.left(), tex_rect.top());
// vertex 1
vbuffer[1].position = Vector3f(final_rect.left(), final_rect.bottom(), 0.0f);
vbuffer[1].colour_val = colours.d_bottom_left;
vbuffer[1].tex_coords = Vector2f(tex_rect.left(), tex_rect.bottom());
// vertex 2
vbuffer[2].position.d_x = final_rect.right();
vbuffer[2].position.d_z = 0.0f;
vbuffer[2].colour_val = colours.d_bottom_right;
vbuffer[2].tex_coords.d_x = tex_rect.right();
// top-left to bottom-right diagonal
if (quad_split_mode == TopLeftToBottomRight)
{
vbuffer[2].position.d_y = final_rect.bottom();
vbuffer[2].tex_coords.d_y = tex_rect.bottom();
}
// bottom-left to top-right diagonal
else
{
vbuffer[2].position.d_y = final_rect.top();
vbuffer[2].tex_coords.d_y = tex_rect.top();
}
// vertex 3
vbuffer[3].position = Vector3f(final_rect.right(), final_rect.top(), 0.0f);
vbuffer[3].colour_val = colours.d_top_right;
vbuffer[3].tex_coords = Vector2f(tex_rect.right(), tex_rect.top());
// vertex 4
vbuffer[4].position.d_x = final_rect.left();
vbuffer[4].position.d_z = 0.0f;
vbuffer[4].colour_val = colours.d_top_left;
vbuffer[4].tex_coords.d_x = tex_rect.left();
// top-left to bottom-right diagonal
if (quad_split_mode == TopLeftToBottomRight)
{
vbuffer[4].position.d_y = final_rect.top();
vbuffer[4].tex_coords.d_y = tex_rect.top();
}
// bottom-left to top-right diagonal
else
{
vbuffer[4].position.d_y = final_rect.bottom();
vbuffer[4].tex_coords.d_y = tex_rect.bottom();
}
// vertex 5
vbuffer[5].position = Vector3f(final_rect.right(), final_rect.bottom(), 0.0f);
vbuffer[5].colour_val= colours.d_bottom_right;
vbuffer[5].tex_coords = Vector2f(tex_rect.right(), tex_rect.bottom());
buffer.setActiveTexture(d_texture);
buffer.appendGeometry(vbuffer, 6);
}