SmolGraph
Posted by Anonymous on Tue 19th Dec 2017 23:11
raw | new post

class smolGraph
{

        public $screenWidth=1000;
        public $screenHeight=1000;

        //what is the incoming data going to look like
        public $minValueX;
        public $maxValueX;
        public $minValueY;
        public $maxValueY;

        //Where does it live physicall on the screen
        public $startX;
        public $widthX;
        public $startY;
        public $heightY;

        //cartesian center relative to the X Y of physical screen
        public $cartCenterX;
        public $cartCenterY;
}


        $AGraph=new smolGraph();
        $AGraph->minValueX=-25;
        $AGraph->maxValueX=25;
        $AGraph->minValueY=-25;
        $AGraph->maxValueY=25;

        $AGraph->startX=100;
        $AGraph->startY=100;
        $AGraph->widthX=100;
        $AGraph->heightY=100;

        $AGraph->cartCenterX=50;
        $AGraph->cartCenterY=50;

        print_r($AGraph);

        graphBounds($AGraph,2,"#0000ff");

        graphLine($AGraph,0,0,25,25,1,"#000000");
        graphLine($AGraph,-25,25,12,12,1,"#00ff00");
        //graphLine($AGraph,0,0,25,0,1,"#000000");
        //graphLine($AGraph,-25,-25,25,25,1,"#ff0000");


        function graphBounds($GSET,$width,$color)
        {
                global $SVGDOCUMENT;
                $x1=$GSET->startX;
                $x2=$GSET->startX+$GSET->widthX;

                $y1=$GSET->startY;
                $y2=$GSET->startY+$GSET->heightY;
                $SVGDOCUMENT.="<line x1=\"$x1\" y1=\"$y1\" x2=\"$x2\" y2=\"$y1\" style=\"stroke:$color;stroke-width:$width;\" />\n"; //top
                $SVGDOCUMENT.="<line x1=\"$x2\" y1=\"$y1\" x2=\"$x2\" y2=\"$y2\" style=\"stroke:$color;stroke-width:$width;\" />\n"; //right
                $SVGDOCUMENT.="<line x1=\"$x1\" y1=\"$y2\" x2=\"$x2\" y2=\"$y2\" style=\"stroke:$color;stroke-width:$width;\" />\n"; //bottom
                $SVGDOCUMENT.="<line x1=\"$x1\" y1=\"$y1\" x2=\"$x1\" y2=\"$y2\" style=\"stroke:$color;stroke-width:$width;\" />\n"; //left
        }

        function graphLine($GSET,$x,$y,$h,$v,$width,$color)
        {
                global $SVGDOCUMENT;

                $x1=map($x,$GSET->minValueX,$GSET->maxValueX,$GSET->startX,$GSET->startX+$GSET->widthX)-($GSET->cartCenterX);
                $x2=map($h,$GSET->minValueX,$GSET->maxValueX,$GSET->startX,$GSET->startX+$GSET->widthX)-($GSET->cartCenterX);

                // $y1=map($y,$GSET->minValueY,$GSET->maxValueY,$GSET->startY,$GSET->startY+$GSET->heightY)+$GSET->cartCenterY;
                // $y2=map($v,$GSET->minValueY,$GSET->maxValueY,$GSET->startY,$GSET->startY+$GSET->heightY)+$GSET->cartCenterY;
                $y1=map($y,$GSET->minValueY,$GSET->maxValueY,$GSET->startY+$GSET->heightY,$GSET->startY)+$GSET->cartCenterY;
                $y2=map($v,$GSET->minValueY,$GSET->maxValueY,$GSET->startY+$GSET->heightY,$GSET->startY)+$GSET->cartCenterY;
                $SVGDOCUMENT.="<line x1=\"$x1\" y1=\"$y1\" x2=\"$x2\" y2=\"$y2\" style=\"stroke:$color;stroke-width:$width;\" />\n";
        }