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/**
* @file lldrawfrustum.cpp
* @brief Implementation of lldrawfrustum
*
* $LicenseInfo:firstyear=2019&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2019, 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 "lldrawfrustum.h"
#include "llviewercontrol.h"
LLDrawFrustum::LLDrawFrustum()
: mContextConeOpacity(0.f)
{
mContextConeInAlpha = gSavedSettings.getF32("ContextConeInAlpha"); // 0.0f
mContextConeOutAlpha = gSavedSettings.getF32("ContextConeOutAlpha"); // 1.f
mContextConeFadeTime = gSavedSettings.getF32("ContextConeFadeTime"); // 0.08f
}
LLDrawFrustum::LLDrawFrustum(LLView *origin)
: mContextConeOpacity(0.f)
{
mContextConeInAlpha = gSavedSettings.getF32("ContextConeInAlpha");
mContextConeOutAlpha = gSavedSettings.getF32("ContextConeOutAlpha");
mContextConeFadeTime = gSavedSettings.getF32("ContextConeFadeTime");
setFrustumOrigin(origin);
}
void LLDrawFrustum::setFrustumOrigin(LLView *origin)
{
if (origin)
{
mFrustumOrigin = origin->getHandle();
}
}
void LLDrawFrustum::drawFrustum(const LLRect &derived_local_rect, const LLView *root_view, const LLView *drag_handle, bool has_focus)
{
if (mFrustumOrigin.get())
{
LLView * frustumOrigin = mFrustumOrigin.get();
LLRect origin_rect;
frustumOrigin->localRectToOtherView(frustumOrigin->getLocalRect(), &origin_rect, root_view);
// draw context cone connecting derived floater (ex: color picker) with view (ex: color swatch) in parent floater
if (has_focus && frustumOrigin->isInVisibleChain() && mContextConeOpacity > 0.001f)
{
gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
LLGLEnable(GL_CULL_FACE);
gGL.begin(LLRender::QUADS);
{
gGL.color4f(0.f, 0.f, 0.f, mContextConeInAlpha * mContextConeOpacity);
gGL.vertex2i(origin_rect.mLeft, origin_rect.mTop);
gGL.vertex2i(origin_rect.mRight, origin_rect.mTop);
gGL.color4f(0.f, 0.f, 0.f, mContextConeOutAlpha * mContextConeOpacity);
gGL.vertex2i(derived_local_rect.mRight, derived_local_rect.mTop);
gGL.vertex2i(derived_local_rect.mLeft, derived_local_rect.mTop);
gGL.color4f(0.f, 0.f, 0.f, mContextConeOutAlpha * mContextConeOpacity);
gGL.vertex2i(derived_local_rect.mLeft, derived_local_rect.mTop);
gGL.vertex2i(derived_local_rect.mLeft, derived_local_rect.mBottom);
gGL.color4f(0.f, 0.f, 0.f, mContextConeInAlpha * mContextConeOpacity);
gGL.vertex2i(origin_rect.mLeft, origin_rect.mBottom);
gGL.vertex2i(origin_rect.mLeft, origin_rect.mTop);
gGL.color4f(0.f, 0.f, 0.f, mContextConeOutAlpha * mContextConeOpacity);
gGL.vertex2i(derived_local_rect.mRight, derived_local_rect.mBottom);
gGL.vertex2i(derived_local_rect.mRight, derived_local_rect.mTop);
gGL.color4f(0.f, 0.f, 0.f, mContextConeInAlpha * mContextConeOpacity);
gGL.vertex2i(origin_rect.mRight, origin_rect.mTop);
gGL.vertex2i(origin_rect.mRight, origin_rect.mBottom);
gGL.color4f(0.f, 0.f, 0.f, mContextConeOutAlpha * mContextConeOpacity);
gGL.vertex2i(derived_local_rect.mLeft, derived_local_rect.mBottom);
gGL.vertex2i(derived_local_rect.mRight, derived_local_rect.mBottom);
gGL.color4f(0.f, 0.f, 0.f, mContextConeInAlpha * mContextConeOpacity);
gGL.vertex2i(origin_rect.mRight, origin_rect.mBottom);
gGL.vertex2i(origin_rect.mLeft, origin_rect.mBottom);
}
gGL.end();
}
if (gFocusMgr.childHasMouseCapture(drag_handle))
{
mContextConeOpacity = lerp(mContextConeOpacity, gSavedSettings.getF32("PickerContextOpacity"), LLCriticalDamp::getInterpolant(mContextConeFadeTime));
}
else
{
mContextConeOpacity = lerp(mContextConeOpacity, 0.f, LLCriticalDamp::getInterpolant(mContextConeFadeTime));
}
}
}
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