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glfunctiongraph.cpp
00001 /*************************************************************************** 00002 glfunctiongraph.cpp - description 00003 ------------------- 00004 begin : Fri Oct 18 2002 00005 copyright : (C) 2002-03 by Fungmeista 00006 email : mizunoami44@users.sourceforge.net 00007 ***************************************************************************/ 00008 00009 /*************************************************************************** 00010 * * 00011 * This program is free software; you can redistribute it and/or modify * 00012 * it under the terms of the GNU General Public License as published by * 00013 * the Free Software Foundation; either version 2 of the License, or * 00014 * (at your option) any later version. * 00015 * * 00016 ***************************************************************************/ 00017 00018 #include "glfunctiongraph.h" 00019 00020 #include "fungparser.h" 00021 #include "fungmath.h" 00022 00023 GLFunctionGraph::GLFunctionGraph(QWidget *parent, const char *name) : GLExpressionGraph(parent,name) 00024 { 00025 } 00026 00027 GLFunctionGraph::~GLFunctionGraph() 00028 { 00029 } 00030 00031 void GLFunctionGraph::trace(GLfloat mouseX, GLfloat mouseY, FungParser &parser, GLfloat *x, GLfloat *y, GLfloat *z) 00032 { 00033 double values[] = {mouseX,mouseY,animatorValue()}; 00034 GLfloat _z = parser.Eval(values); 00035 00036 emit activeCoordinateChanged(QString("x = %1").arg(mouseX),QString("y = %1").arg(mouseY),QString("z = %1").arg(_z)); 00037 00038 *x = mouseX; 00039 *y = mouseY; 00040 *z = _z; 00041 } 00042 00043 std::vector< std::vector<Cartesian3DCoord> > GLFunctionGraph::getValues( FungParser &fp, GLfloat *min, GLfloat *max ) 00044 { 00045 qDebug("GLFunctionGraph::getValues()"); 00046 Cartesian3DCoord2DVector values; 00047 00048 GLfloat x, y, z, current_min = 0.0, current_max = 0.0; 00049 int x_index, y_index; 00050 for (x = getXMin(), x_index = 0; x < getXMax() - xScale; x_index++, x+=xScale) 00051 { 00052 values.push_back( std::vector<Cartesian3DCoord>() ); 00053 for (y = getYMin(), y_index = 0; y < getYMax() - yScale; y_index++, y+=yScale) 00054 { 00055 double d[] = {x,y,animatorValue()}; 00056 z = fp.Eval(d); 00057 00058 current_min = MIN(current_min,z); 00059 current_max = MAX(current_max,z); 00060 00061 values[x_index].push_back( Cartesian3DCoord(x,y,z) ); 00062 } 00063 } 00064 00065 if ( min != 0 ) 00066 *min = current_min; 00067 if ( max != 0 ) 00068 *max = current_max; 00069 00070 return values; 00071 } 00072 00073