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/**
* @file llhudrender.cpp
* @brief LLHUDRender class implementation
*
* $LicenseInfo:firstyear=2002&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "llviewerprecompiledheaders.h"
#include "llhudrender.h"
#include "llrender.h"
#include "llgl.h"
#include "llviewercamera.h"
#include "v3math.h"
#include "llquaternion.h"
#include "llfontgl.h"
#include "llglheaders.h"
#include "llviewerwindow.h"
#include "llui.h"
#include <glm/gtc/matrix_transform.hpp>
#include <glm/gtc/type_ptr.hpp>
void hud_render_utf8text(const std::string &str, const LLVector3 &pos_agent,
const LLFontGL &font,
const U8 style,
const LLFontGL::ShadowType shadow,
const F32 x_offset, const F32 y_offset,
const LLColor4& color,
const bool orthographic)
{
LLWString wstr(utf8str_to_wstring(str));
hud_render_text(wstr, pos_agent, font, style, shadow, x_offset, y_offset, color, orthographic);
}
void hud_render_text(const LLWString &wstr, const LLVector3 &pos_agent,
const LLFontGL &font,
const U8 style,
const LLFontGL::ShadowType shadow,
const F32 x_offset, const F32 y_offset,
const LLColor4& color,
const bool orthographic)
{
LLViewerCamera* camera = LLViewerCamera::getInstance();
// Do cheap plane culling
LLVector3 dir_vec = pos_agent - camera->getOrigin();
dir_vec /= dir_vec.magVec();
if (wstr.empty() || (!orthographic && dir_vec * camera->getAtAxis() <= 0.f))
{
return;
}
LLVector3 right_axis;
LLVector3 up_axis;
if (orthographic)
{
right_axis.setVec(0.f, -1.f / gViewerWindow->getWorldViewHeightScaled(), 0.f);
up_axis.setVec(0.f, 0.f, 1.f / gViewerWindow->getWorldViewHeightScaled());
}
else
{
camera->getPixelVectors(pos_agent, up_axis, right_axis);
}
LLCoordFrame render_frame = *camera;
LLQuaternion rot;
if (!orthographic)
{
rot = render_frame.getQuaternion();
rot = rot * LLQuaternion(-F_PI_BY_TWO, camera->getYAxis());
rot = rot * LLQuaternion(F_PI_BY_TWO, camera->getXAxis());
}
else
{
rot = LLQuaternion(-F_PI_BY_TWO, LLVector3(0.f, 0.f, 1.f));
rot = rot * LLQuaternion(-F_PI_BY_TWO, LLVector3(0.f, 1.f, 0.f));
}
F32 angle;
LLVector3 axis;
rot.getAngleAxis(&angle, axis);
LLVector3 render_pos = pos_agent + (floorf(x_offset) * right_axis) + (floorf(y_offset) * up_axis);
//get the render_pos in screen space
LLRect world_view_rect = gViewerWindow->getWorldViewRectRaw();
glm::ivec4 viewport(world_view_rect.mLeft, world_view_rect.mBottom, world_view_rect.getWidth(), world_view_rect.getHeight());
glm::vec3 win_coord = glm::project(glm::make_vec3(render_pos.mV), get_current_modelview(), get_current_projection(), viewport);
//fonts all render orthographically, set up projection``
gGL.matrixMode(LLRender::MM_PROJECTION);
gGL.pushMatrix();
gGL.matrixMode(LLRender::MM_MODELVIEW);
gGL.pushMatrix();
LLUI::pushMatrix();
gl_state_for_2d(world_view_rect.getWidth(), world_view_rect.getHeight());
gViewerWindow->setup3DViewport();
win_coord.x -= world_view_rect.mLeft;
win_coord.y -= world_view_rect.mBottom;
LLUI::loadIdentity();
gGL.loadIdentity();
LLUI::translate((F32) win_coord.x*1.0f/LLFontGL::sScaleX, (F32) win_coord.y*1.0f/(LLFontGL::sScaleY), -(((F32) win_coord.z*2.f)-1.f));
F32 right_x;
font.render(wstr, 0, 0, 1, color, LLFontGL::LEFT, LLFontGL::BASELINE, style, shadow, static_cast<S32>(wstr.length()), 1000, &right_x, /*use_ellipses*/false, /*use_color*/true);
LLUI::popMatrix();
gGL.popMatrix();
gGL.matrixMode(LLRender::MM_PROJECTION);
gGL.popMatrix();
gGL.matrixMode(LLRender::MM_MODELVIEW);
}
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