made dependency analysis work without errors for magic-new (except for a few script functions); implemented the rest of the ScriptManager

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@71 0fc631ac-6414-0410-93d0-97cfa31319b6

src/render/symbol/filter.cpp

@@ -97,6 +97,9 @@ IMPLEMENT_REFLECTION(GradientSymbolFilter) {
 
 // ----------------------------------------------------------------------------- : LinearGradientSymbolFilter
 
+// TODO: move to some general util header
+inline double sqr(double x) { return x * x; }
+
 String LinearGradientSymbolFilter::fillType() const { return _("linear gradient"); }
 
 LinearGradientSymbolFilter::LinearGradientSymbolFilter()
@@ -105,12 +108,14 @@ LinearGradientSymbolFilter::LinearGradientSymbolFilter()
 {}
 
 AColor LinearGradientSymbolFilter::color(double x, double y, SymbolSet point) const {
+	len = sqr(end_x - center_x) + sqr(end_y - center_y);
+	if (len == 0) len = 1; // prevent div by 0
 	return GradientSymbolFilter::color(x,y,point,this);
 }
 
 double LinearGradientSymbolFilter::t(double x, double y) const {
-	//return abs( int(x - center_x) * dirX + int(y - centerY) * dirY)  * scale;
-	return 0; // todo
+	double t= abs( (x - center_x) * (end_x - center_x) + (y - center_y) * (end_y - center_y)) / len;
+	return min(1.,max(0.,t));
 }
 
 IMPLEMENT_REFLECTION(LinearGradientSymbolFilter) {
@@ -127,9 +132,6 @@ AColor RadialGradientSymbolFilter::color(double x, double y, SymbolSet point) co
 	return GradientSymbolFilter::color(x,y,point,this);
 }
 
-// TODO: move to some general util header
-inline double sqr(double x) { return x * x; }
-
 double RadialGradientSymbolFilter::t(double x, double y) const {
 	return sqrt( (sqr(x - 0.5) + sqr(y - 0.5)) * 2); 
 }

src/render/symbol/filter.hpp

@@ -94,6 +94,7 @@ class LinearGradientSymbolFilter : public GradientSymbolFilter {
   private:
 	double center_x, center_y;
 	double end_x,    end_y;
+	mutable double len;
 	DECLARE_REFLECTION();
 };