void View::transform(
Transformer& t, const Allocation& a, const Allocation&
) const {
scene2view(a);
const Allotment& ax = a.x_allotment();
const Allotment& ay = a.y_allotment();
csize(ax.begin(), ax.span(), ay.begin(), ay.span());
float sx = ax.span()/XYView::width();
float sy = ay.span()/XYView::height();
// if (sx > sy) sx = sy;
t.translate( -x(), -y());
t.scale(sx, sx);
View* v = (View*)this;
v->x_pick_epsilon_ = pick_epsilon/sx;
v->y_pick_epsilon_ = pick_epsilon/sx;
t.translate((ax.begin() + ax.end())/2,(ay.begin() + ay.end())/2);
//printf("\nx origin=%g span=%g alignment=%g begin=%g end=%g\n", ax.origin(), ax.span(), ax.alignment(), ax.begin(), ax.end());
//printf("\ny origin=%g span=%g alignment=%g begin=%g end=%g\n", ay.origin(), ay.span(), ay.alignment(), ay.begin(), ay.end());
Coord x1,y1;
t.transform(x() - x_span_/2, y() - y_span_/2, x1, y1);
if (!Math::equal(ax.begin(), x1, 1) || !Math::equal(ay.begin(), y1, 1)) {
t.inverse_transform(ax.begin(), ay.begin(), x1, y1);
v->x_span_ = 2*(x() - x1);
v->y_span_ = 2*(y() - y1);
v->size(x1,y1,x1+v->x_span_, y1+v->y_span_);
}
}
static void invXform_gs (Coord& tx, Coord& ty, Graphic31* g) {
Transformer* t = g->transformer();
if (t != nil) {
t->inverse_transform(tx, ty);
}
}
boolean Graphic31::manipulating (const Event& e, Tool31& tool) {
if (e.type() == Event::up) {
return false;
} else if (e.type() == Event::motion) {
unsigned int tool_type = tool.tool();
ToolState& ts = tool.toolstate();
if (tool_type != Tool31::nop) {
float pi = 3.14159;
Graphic31 gs;
Transformer* tx = ts._gs.transformer();
Coord x, y, lx, ly;
x = ts._last.pointer_x();
y = ts._last.pointer_y();
lx = e.pointer_x();
ly = e.pointer_y();
switch(tool_type) {
case Tool31::select:
break;
case Tool31::move:
{
if (tx != nil) {
tx->inverse_transform(lx, ly);
tx->inverse_transform(x, y);
}
translate(lx-x, ly-y);
ts._last = e;
}
break;
case Tool31::scale:
{
Coord cx, cy;
cx = (ts._l + ts._r)/2.0;
cy = (ts._b + ts._t)/2.0;
scale((lx-cx)/(x-cx), (ly-cy)/(y-cy), cx, cy);
ts._last = e;
}
break;
case Tool31::rotate:
{
Coord cx, cy;
cx = (ts._l + ts._r)/2.0;
cy = (ts._b + ts._t)/2.0;
float ldy = ly-cy; float ldx = lx-cx;
float dy = y-cy; float dx = x-cx;
float cur = degrees(atan2f(ldy, ldx));
float last = degrees(atan2f(dy, dx));
rotate(cur-last, cx, cy);
ts._last = e;
}
break;
}
}
}
return true;
}