From 651b6c612db4e809c506973996f2580c4158ac3a Mon Sep 17 00:00:00 2001
From: mickeyl <mickeyl>
Date: Sat, 27 Sep 2003 11:29:26 +0000
Subject: merge dasher which has been introduced in BRANCH first (wtf?) into HEAD

---
(limited to 'inputmethods/dasher/DasherViewSquare.inl')

diff --git a/inputmethods/dasher/DasherViewSquare.inl b/inputmethods/dasher/DasherViewSquare.inl
new file mode 100644
index 0000000..c22c32c
--- a/dev/null
+++ b/inputmethods/dasher/DasherViewSquare.inl
@@ -0,0 +1,142 @@
+// DasherViewSquare.inl
+//
+/////////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2001-2002 David Ward
+//
+/////////////////////////////////////////////////////////////////////////////
+
+namespace Dasher {
+
+inline const void CDasherViewSquare::screen2dasher(int *mousex, int *mousey)
+{
+	int dashery=*mousey;
+
+	double x=1.0*(CanvasX-*mousex)/CanvasX;
+	dashery*=DasherModel().DasherY();
+	dashery/=CanvasY;
+
+	if (DasherModel().Dimensions()==false) {
+		if (dashery>m_Y2)
+			dashery= (dashery-m_Y2)*m_Y1 + m_Y2;
+		else if (dashery<m_Y3)
+			dashery= (dashery-m_Y3)*m_Y1+m_Y3;
+	}
+
+	x=ixmap(x)*DasherModel().DasherY();
+
+	if (DasherModel().Dimensions()==true) {
+		double distx, disty;	
+		
+		distx=2048-x;
+		disty=DasherModel().DasherY()/2-dashery;
+
+		if (disty>1500) {
+			dashery=548+(548-dashery);
+			disty=1298-dashery;
+			if(disty<-750) {
+				x=2048;
+				dashery=2048;
+			} else {
+				x=2048+pow(pow(750,2)-pow(disty,2),0.5)*10;
+			}
+			*mousex=int(x);
+			*mousey=dashery;
+			return;
+		}
+		else if (disty <-1500) {
+			dashery=3548+(3548-dashery);
+			disty=2798-dashery;
+			if(disty>750) {
+				x=2048;
+				dashery=2048;
+			} else {
+				x=2048+pow(pow(750,2)-pow(disty,2),0.5)*10;
+			}
+			*mousex=int(x);
+			*mousey=dashery;
+			return;
+		} else {
+			x=pow(pow(1500,2)-pow(disty,2),0.5);
+		}
+		x=2048-x;
+	}
+	*mousex=int(x);
+	*mousey=dashery;
+}
+
+inline const int CDasherViewSquare::dasherx2screen(const myint sx)
+{
+	double x=1.0*sx/(DasherModel().DasherY());
+	x=xmap(x);
+//	return CanvasX-int(x*CanvasY);
+	return CanvasX-int(x*CanvasX);
+
+}
+
+
+inline const int CDasherViewSquare::dashery2screen(myint y)
+{
+	if (y > m_Y2 )
+		y= m_Y2 +  (y-m_Y2)/m_Y1;
+	else if (y<m_Y3)
+		y= m_Y3+   (y-m_Y3 )/m_Y1;
+
+//	y*=CanvasY*Screen().GetFontSize();
+	y*=CanvasY;
+	y/=DasherModel().DasherY();
+//	y-=(CanvasY*Screen().GetFontSize()-CanvasY)/2;
+	return int(y);
+}
+
+
+inline void CDasherViewSquare::Crosshair(myint sx)
+{
+	CDasherScreen::point crosshair[2];
+	
+	crosshair[0].x = dasherx2screen(sx);
+	crosshair[0].y = 0;
+	crosshair[1].x = crosshair[0].x;
+	crosshair[1].y = CanvasY;
+	
+	MapScreen(&crosshair[0].x, &crosshair[0].y);
+	MapScreen(&crosshair[1].x, &crosshair[1].y);
+	Screen().Polyline(crosshair,2);
+	
+	crosshair[0].x = dasherx2screen(12*sx/14);
+	crosshair[0].y = CanvasY/2;
+	crosshair[1].x = dasherx2screen(17*sx/14);
+	crosshair[1].y = CanvasY/2;
+	
+	MapScreen(&crosshair[0].x, &crosshair[0].y);
+	MapScreen(&crosshair[1].x, &crosshair[1].y);
+	Screen().Polyline(crosshair,2);
+}
+
+
+
+
+
+inline double CDasherViewSquare::ixmap(double x)
+// invert x non-linearity
+{
+	if (x<m_dXmpb*m_dXmpc)
+		return x/m_dXmpc;
+	else
+		return m_dXmpb-m_dXmpa + m_dXmpa * exp( (x/m_dXmpc - m_dXmpb) / m_dXmpa);
+	
+}
+
+
+inline double CDasherViewSquare::xmap(double x)
+// x non-linearity
+{
+	if (x<m_dXmpb)
+		return m_dXmpc*x;
+	else
+		return m_dXmpc*(m_dXmpa*log((x+m_dXmpa-m_dXmpb)/m_dXmpa) +m_dXmpb);
+}
+
+
+
+} // namespace Dasher
--
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