Operators

void operator= (const Picture& p)

Assignment operator

Makes *this a copy of p, destroying the old contents of *this.

void operator+= (const Picture& p)

Operator

Adds the contents of p to *this. p remains unchanged.

void operator+= (Shape* s)

Operator

Puts s onto shapes. Note that the pointer s itself is put onto shapes, so any allocation and copying must be performed first. This is a low-level function that users normally won't need to use directly.

void operator+= (Label* label)

Operator

Puts label onto labels. Note that the pointer label itself is put onto labels, so any allocation and copying must be performed first. This is a low-level function that users normally won't need to invoke directly.

Transform operator*= (const Transform& t)

Operator

Multiplies transform by t. This has the effect of transforming all of the Shapes on shapes and all of the Points of the Labels on labels by t upon output. Transform t; t.rotate(0, 0, 180); t.shift(3); Reg_Polygon pl(origin, 5, 3, 90); pl.draw(); pl.label(); current_picture.output(Projections::PARALLEL_X_Y); current_picture *= t; current_picture.output(Projections::PARALLEL_X_Y); Fig. 78.