Thread: [Hgengine-cvs] SF.net SVN: hgengine:[359] Mercury2/modules

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Revision: 359
          http://hgengine.svn.sourceforge.net/hgengine/?rev=359&view=rev
Author:   cnlohr
Date:     2009-06-23 04:53:46 +0000 (Tue, 23 Jun 2009)

Log Message:
-----------
woot text node

Modified Paths:
--------------
    Mercury2/modules/Makefile

Added Paths:
-----------
    Mercury2/modules/TextNode.cpp

Modified: Mercury2/modules/Makefile
===================================================================

--- Mercury2/modules/Makefile	2009-06-23 00:23:23 UTC (rev 358)
+++ Mercury2/modules/Makefile	2009-06-23 04:53:46 UTC (rev 359)
@@ -2,7 +2,7 @@
 CXXFLAGS=${CFLAGS}
 LDFLAGS=-shared
 
-all : BillboardNode.so
+all : BillboardNode.so TextNode.so
 
 clean :
 	rm -rf *~ *.o *.so
@@ -10,3 +10,5 @@
 BillboardNode.so : BillboardNode.o
 	g++ -o$@ $^ ${LDFLAGS}
 
+TextNode.so : TextNode.o
+	g++ -o$@ $^ ${LDFLAGS}

Added: Mercury2/modules/TextNode.cpp
===================================================================
--- Mercury2/modules/TextNode.cpp	                        (rev 0)
+++ Mercury2/modules/TextNode.cpp	2009-06-23 04:53:46 UTC (rev 359)
@@ -0,0 +1,285 @@
+#include "TextNode.h"
+#include <MercuryVertex.h>
+#include <Viewport.h>
+#include <MercuryFile.h>
+#include <MercuryVBO.h>
+#include <Texture.h>
+#include <vector>
+
+REGISTER_NODE_TYPE(TextNode);
+
+TextNode::TextNode()
+	:MercuryNode(),m_fSize(1.),m_bDirty(0), m_kVBO(0), m_kTEX(0)
+{
+}
+
+void TextNode::Update(float dTime)
+{
+	if( m_bDirty )
+	{
+		RenderText();
+	}
+
+	MercuryNode::Update( dTime );
+}
+
+void TextNode::LoadFromXML(const XMLNode& node)
+{
+	MercuryNode::LoadFromXML(node);
+
+	if ( !node.Attribute("font").empty() )
+		LoadFont( node.Attribute("font") );
+	if ( !node.Attribute("size").empty() )
+		SetSize( StrToFloat( node.Attribute("size") ) );
+	if ( !node.Attribute("text").empty() )
+		SetText( node.Attribute("text") );
+}
+
+void TextNode::RenderText()
+{
+	std::vector< DChar > chars;
+	float xps = 0;
+	float yps = 0;
+
+	if( !m_pThisFont )
+		return;
+
+//	AddAsset( AssetFactory::GetInstance().Generate( "Quad", "MyQuad" ) );
+
+	if( !m_kTEX )
+	{
+		m_kTEX = MAutoPtr< MercuryAsset >( Texture::LoadFromFile( m_pThisFont->m_sImage ) );
+		if( !m_kTEX )
+		{
+			fprintf( stderr, "Could not create Texture for text.\n" );
+			return;
+		}
+		m_kTEX->Init( this );
+	}
+
+	//Setup FBO and Texture
+	if( !m_kVBO )
+	{
+		m_kVBO = new MercuryVBO;
+		if( !m_kVBO )
+		{
+			fprintf( stderr, "Could not create VBO for text.\n" );
+			return;
+		}
+		AddAsset( m_kVBO );
+	}
+
+	//Pass 1: Figure out actual char positions and count
+	for( const char * c = &m_sText[0]; *c != 0; c++ )
+	{
+		if( *c == 9 )
+			xps+=80;
+		else if( *c == 10 )
+		{
+			xps = 0;
+			yps += m_pThisFont->m_fHeight;	//??XXXX NEED TO SET TO RIGHT VALUE!
+		}
+		else if( *c == 32 )
+			xps+=20;
+		else
+		{
+			if( m_pThisFont->m_mGlyphs.find( *c ) != m_pThisFont->m_mGlyphs.end() )
+			{
+				Glyph & g = m_pThisFont->m_mGlyphs[*c];
+
+				chars.push_back( DChar( &g, *c, xps, yps ) );
+				//Here is the right place to do line-splitting if need be.
+
+				xps += g.ilx+4;	//Why 4?
+			}
+		}
+	}
+
+	//Stage 2: Actually generate the geometry.
+	((MercuryVBO*)m_kVBO.Ptr())->AllocateIndexSpace(chars.size()*6);
+	((MercuryVBO*)m_kVBO.Ptr())->AllocateVertexSpace(chars.size()*4);
+
+	for( unsigned i = 0; i < chars.size(); i++ )
+	{
+		DChar & dc = chars[i];
+		Glyph * g = dc.glyph;
+		float * vd = ((MercuryVBO*)m_kVBO.Ptr())->GetVertexHandle();
+		short unsigned int * id = ((MercuryVBO*)m_kVBO.Ptr())->GetIndexHandle();
+
+		float sx = (-g->iox       + dc.xps)*m_fSize;
+		float sy = -(-g->ioy        + dc.yps)*m_fSize;
+		float ex = (g->ilx-g->iox + dc.xps)*m_fSize;
+		float ey = -(g->ily-g->ioy + dc.yps)*m_fSize;
+
+		//Vertex1: Upper Left
+		vd[(i*4+0)*8+0] = g->fsx;
+		vd[(i*4+0)*8+1] = g->fsy;	//U,V
+		vd[(i*4+0)*8+2] = 0;
+		vd[(i*4+0)*8+3] = 0;
+		vd[(i*4+0)*8+4] = -1;	//Normal <0,0,-1>
+		vd[(i*4+0)*8+5] = sx;
+		vd[(i*4+0)*8+6] = sy;
+		vd[(i*4+0)*8+7] = 0;
+
+		//Vertex 2: Upper Right
+		vd[(i*4+1)*8+0] = g->fex;
+		vd[(i*4+1)*8+1] = g->fsy;
+		vd[(i*4+1)*8+2] = 0;
+		vd[(i*4+1)*8+3] = 0;
+		vd[(i*4+1)*8+4] = -1;	//Normal <0,0,-1>
+		vd[(i*4+1)*8+5] = ex;
+		vd[(i*4+1)*8+6] = sy;
+		vd[(i*4+1)*8+7] = 0;
+
+		//Vertex 3: Lower Right
+		vd[(i*4+2)*8+0] = g->fex;
+		vd[(i*4+2)*8+1] = g->fey;
+		vd[(i*4+2)*8+2] = 0;
+		vd[(i*4+2)*8+3] = 0;
+		vd[(i*4+2)*8+4] = -1;	//Normal <0,0,-1>
+		vd[(i*4+2)*8+5] = ex;
+		vd[(i*4+2)*8+6] = ey;
+		vd[(i*4+2)*8+7] = 0;
+
+		//Vertex 4: Lower Left
+		vd[(i*4+3)*8+0] = g->fsx;
+		vd[(i*4+3)*8+1] = g->fey;
+		vd[(i*4+3)*8+2] = 0;
+		vd[(i*4+3)*8+3] = 0;
+		vd[(i*4+3)*8+4] = -1;	//Normal <0,0,-1>
+		vd[(i*4+3)*8+5] = sx;
+		vd[(i*4+3)*8+6] = ey;
+		vd[(i*4+3)*8+7] = 0;
+
+		printf( "%f %f   %f %f   %f %f   %f %f\n", vd[(i*4+0)*8+5], vd[(i*4+0)*8+6], vd[(i*4+1)*8+5], vd[(i*4+1)*8+6], vd[(i*4+2)*8+5], vd[(i*4+2)*8+6], vd[(i*4+3)*8+5], vd[(i*4+3)*8+6] );
+		id[i*6+0] = i * 4 + 2;
+		id[i*6+1] = i * 4 + 1;
+		id[i*6+2] = i * 4 + 0;
+		id[i*6+3] = i * 4 + 0;
+		id[i*6+4] = i * 4 + 3;
+		id[i*6+5] = i * 4 + 2;
+	}
+
+	m_bDirty = false;
+	m_kVBO->Init( this );
+}
+
+bool TextNode::LoadFont( const MString & sFont )
+{
+	if( g_AllFonts.get( sFont ) == 0 )
+	{
+		m_pThisFont = &g_AllFonts[sFont];
+		if( !m_pThisFont->LoadFromFile( sFont ) )
+		{
+			fprintf( stderr, "Error: Could not load font: \"%s\".", sFont.c_str() );
+			g_AllFonts.remove( sFont );
+			return false;
+		}
+	} else
+		m_pThisFont = &g_AllFonts[sFont];
+	SetDirtyText();
+
+	return true;
+}
+
+void TextNode::SetSize( float fSize )
+{
+	m_fSize = fSize;
+	SetDirtyText();
+}
+
+void TextNode::SetText( const MString & sText )
+{
+	m_sText = sText;
+	SetDirtyText();
+}
+
+
+bool TextNode::Font::LoadFromFile( const MString & fName )
+{
+	int line = 0;
+	MString sLine;
+
+	MercuryFile * f = FILEMAN.Open( fName );
+	if( !f )
+		return false;
+
+	if( !f->ReadLine( m_sImage ) )
+	{
+		delete f;
+		return false;
+	}
+
+	if( !f->ReadLine( sLine ) )
+	{
+		delete f;
+		return false;
+	}
+
+	if( sscanf( sLine.c_str(), "%f", &m_fHeight ) != 1 )
+	{
+		fprintf( stderr, "Malformatted font size.\n" );
+		delete f;
+		return false;
+	}
+
+	while( !f->Eof() )
+	{
+		int res;
+		line++;
+
+		Glyph g;
+		int ch;
+
+		f->ReadLine( sLine );
+		if( ( res = sscanf( sLine.c_str(), "%d %f %f %f %f %f %f %f %f", &ch,
+			&g.fsx, &g.fsy, &g.fex, &g.fey, &g.ilx, &g.ily, &g.iox, &g.ioy ) ) != 9 )
+		{
+			if( res == 0 || res == -1 ) continue;
+			fprintf( stderr, "Error on line %d of font \"%s\" (invalid number of args) (%d args).\n", line, fName.c_str(), res );
+			delete f;
+			return false;
+		}
+
+		//Insert the glyph into the map.
+		m_mGlyphs[ch] = g;
+	}
+
+	delete f;
+	return true;
+}
+
+MHash< TextNode::Font > TextNode::g_AllFonts;
+
+
+/****************************************************************************
+ *   Copyright (C) 2009 by Charles Lohr                                     *
+ *                                                                          *
+ *                                                                          *
+ *   All rights reserved.                                                   *
+ *                                                                          *
+ *   Redistribution and use in source and binary forms, with or without     *
+ *   modification, are permitted provided that the following conditions     *
+ *   are met:                                                               *
+ *     * Redistributions of source code must retain the above copyright     *
+ *      notice, this list of conditions and the following disclaimer.       *
+ *     * Redistributions in binary form must reproduce the above            *
+ *      copyright notice, this list of conditions and the following         *
+ *      disclaimer in the documentation and/or other materials provided     *
+ *      with the distribution.                                              *
+ *     * Neither the name of the Mercury Engine nor the names of its        *
+ *      contributors may be used to endorse or promote products derived     *
+ *      from this software without specific prior written permission.       *
+ *                                                                          *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS    *
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT      *
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR  *
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT   *
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,  *
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT       *
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,  *
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY  *
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT    *
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE  *
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.   *
+ ***************************************************************************/


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Thread: [Hgengine-cvs] SF.net SVN: hgengine:[359] Mercury2/modules

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