118 lines
2.8 KiB
C++
118 lines
2.8 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2013 CERN
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* @author Maciej Suminski <maciej.suminski@cern.ch>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/**
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* @file vbo_item.cpp
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* @brief Class to handle an item held in a Vertex Buffer Object.
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*/
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#include <gal/opengl/vbo_container.h>
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#include <gal/opengl/vbo_item.h>
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#include <cstring>
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using namespace KiGfx;
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VBO_ITEM::VBO_ITEM( VBO_CONTAINER* aContainer ) :
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m_offset( 0 ),
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m_size( 0 ),
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m_container( aContainer ),
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m_isDirty( true )
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{
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// The item's size is not known yet, so we just start an item in the container
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aContainer->StartItem( this );
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}
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VBO_ITEM::~VBO_ITEM()
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{
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m_container->Free( this );
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}
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void VBO_ITEM::PushVertex( const VBO_VERTEX* aVertex )
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{
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m_container->Add( this, aVertex );
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m_size++;
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m_isDirty = true;
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}
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void VBO_ITEM::PushVertices( const VBO_VERTEX* aVertices, GLuint aSize )
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{
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for( unsigned int i = 0; i < aSize; ++i )
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{
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PushVertex( &aVertices[i] );
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}
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}
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VBO_VERTEX* VBO_ITEM::GetVertices()
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{
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if( m_isDirty )
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Finish();
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return m_container->GetVertices( m_offset );
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}
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void VBO_ITEM::ChangeColor( const COLOR4D& aColor )
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{
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VBO_VERTEX* vertexPtr = GetVertices();
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for( unsigned int i = 0; i < m_size; ++i )
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{
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vertexPtr->r = aColor.r * 255;
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vertexPtr->g = aColor.g * 255;
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vertexPtr->b = aColor.b * 255;
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vertexPtr->a = aColor.a * 255;
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// Move on to the next vertex
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vertexPtr++;
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}
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}
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void VBO_ITEM::ChangeDepth( int aDepth )
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{
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VBO_VERTEX* vertexPtr = GetVertices();
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for( unsigned int i = 0; i < m_size; ++i )
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{
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vertexPtr->z = aDepth;
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// Move on to the next vertex
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vertexPtr++;
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}
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}
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void VBO_ITEM::Finish()
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{
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// The unknown-sized item has just ended, so we need to inform the container about it
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m_container->EndItem();
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m_isDirty = false;
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}
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