xrb_render.hpp

// ///////////////////////////////////////////////////////////////////////////
// xrb_render.hpp by Victor Dods, created 2004/07/01
// ///////////////////////////////////////////////////////////////////////////
// Unless a different license was explicitly granted in writing by the
// copyright holder (Victor Dods), this software is freely distributable under
// the terms of the GNU General Public License, version 2.  Any works deriving
// from this work must also be released under the GNU GPL.  See the included
// file LICENSE for details.
// ///////////////////////////////////////////////////////////////////////////

#if !defined(_XRB_RENDER_HPP_)
#define _XRB_RENDER_HPP_

#include "xrb.hpp"

#include "xrb_color.hpp"
#include "xrb_gl.hpp"
#include "xrb_matrix2.hpp"
#include "xrb_rect.hpp"
#include "xrb_rendercontext.hpp"
#include "xrb_vector.hpp"
#include "xrb_simpletransform2.hpp"

namespace Xrb
{

class Screen;
class GLTexture;

namespace Render
{
    // ///////////////////////////////////////////////////////////////////////
    // in-WorldView rendering functions
    // ///////////////////////////////////////////////////////////////////////

    void DrawLine (
        RenderContext const &render_context,
        FloatVector2 const &from,
        FloatVector2 const &to,
        Color const &color);
    void DrawArrow (
        RenderContext const &render_context,
        FloatVector2 const &from,
        FloatVector2 const &to,
        Color const &color);
    void DrawPolygon (
        RenderContext const &render_context,
        FloatVector2 const &center,
        Float radius,
        Float angle,
        Color const &color,
        Uint32 vertex_count);
    void DrawCircle (
        RenderContext const &render_context,
        FloatMatrix2 const &transformation,
        FloatVector2 const &center,
        Float radius,
        Color const &color);
    void DrawCircularArc (
        RenderContext const &render_context,
        FloatMatrix2 const &transformation,
        FloatVector2 const &center,
        Float radius,
        Float start_angle,
        Float end_angle,
        Color const &color);

    // ///////////////////////////////////////////////////////////////////////
    // in-Widget rendering functions
    // ///////////////////////////////////////////////////////////////////////

    void DrawScreenRect (
        RenderContext const &render_context,
        Color const &color,
        ScreenCoordRect const &screen_rect);
    void DrawScreenRectTexture (
        RenderContext const &render_context,
        GLTexture const *gl_texture,
        ScreenCoordRect const &screen_rect,
        FloatSimpleTransform2 const &transformation =
            FloatSimpleTransform2::ms_identity);

    // ///////////////////////////////////////////////////////////////////////
    // Render helper functions
    // ///////////////////////////////////////////////////////////////////////

    void SetupTextureUnits (
        GLuint gltexture_handle,
        Color const &color_mask,
        Color const &color_bias); 
} // end of namespace Render

} // end of namespace Xrb

#endif // !defined(_XRB_RENDER_HPP_)

---