shithub: musw

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added zoom.

--- a/vmodeled/main.c

+++ b/vmodeled/main.c

@@ -24,6 +24,7 @@

 RFrame worldrf;

 VModel *model;

+int scale = 1;

 void resized(void);

@@ -126,17 +127,22 @@

 	char *s;

 	Point pts[3];

 	Point2 *p;

+	Matrix S = {

+		scale, 0, 1,

+		0, scale, 1,

+		0, 0, 1,

+	};

 	p = mdl->pts;

 	for(s = mdl->strokefmt; s != 0 && p-mdl->pts < mdl->npts; s++)

 		switch(*s){

 		case 'l':

-			line(dst, toscreen(p[0]), toscreen(p[1]), 0, 0, 0, display->white, ZP);

+			line(dst, toscreen(xform(p[0], S)), toscreen(xform(p[1], S)), 0, 0, 0, display->white, ZP);

 			p += 2;

 			break;

 		case 'c':

 			for(i = 0; i < nelem(pts); i++)

-				pts[i] = toscreen(p[i]);

+				pts[i] = toscreen(xform(p[i], S));

 			bezspline(dst, pts, nelem(pts), 0, 0, 0, display->white, ZP);

 			p += 3;

 			break;

@@ -176,6 +182,20 @@

 }

 void

+zoomin(void)

+{

+	scale++;

+	fprint(2, "scale %d\n", scale);

+}

+

+void

+zoomout(void)

+{

+	scale--;

+	fprint(2, "scale %d\n", scale);

+}

+

+void

 mouse(Mousectl *mc, Keyboardctl *kc)

 {

 	if((mc->buttons&1) != 0)

@@ -182,6 +202,10 @@

 		lmb(mc, kc);

 	if((mc->buttons&4) != 0)

 		rmb(mc, kc);

+	if((mc->buttons&8) != 0)

+		zoomin();

+	if((mc->buttons&16) != 0)

+		zoomout();

 }

 void