109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
|
/**
|
||
|
|
* PANDA 3D SOFTWARE
|
||
|
|
* Copyright (c) Carnegie Mellon University. All rights reserved.
|
||
|
|
*
|
||
|
|
* All use of this software is subject to the terms of the revised BSD
|
||
|
|
* license. You should have received a copy of this license along
|
||
|
|
* with this source code in a file named "LICENSE."
|
||
|
|
*
|
||
|
|
* @file scissorAttrib.h
|
||
|
|
* @author drose
|
||
|
|
* @date 2008-07-29
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef SCISSORATTRIB_H
|
||
|
|
#define SCISSORATTRIB_H
|
||
|
|
|
||
|
|
#include "pandabase.h"
|
||
|
|
|
||
|
|
#include "renderAttrib.h"
|
||
|
|
#include "luse.h"
|
||
|
|
|
||
|
|
class FactoryParams;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This restricts rendering to within a rectangular region of the scene,
|
||
|
|
* without otherwise affecting the viewport or lens properties. Geometry that
|
||
|
|
* falls outside the scissor region is not rendered. It is akin to the OpenGL
|
||
|
|
* glScissor() function.
|
||
|
|
*
|
||
|
|
* The ScissorAttrib always specifies its region relative to its enclosing
|
||
|
|
* DisplayRegion, in screen space, and performs no culling.
|
||
|
|
*
|
||
|
|
* See ScissorEffect if you wish to define a region relative to 2-D or 3-D
|
||
|
|
* coordinates in the scene graph, with culling.
|
||
|
|
*/
|
||
|
|
class EXPCL_PANDA_PGRAPH ScissorAttrib : public RenderAttrib {
|
||
|
|
private:
|
||
|
|
ScissorAttrib(const LVecBase4 &frame);
|
||
|
|
|
||
|
|
PUBLISHED:
|
||
|
|
static CPT(RenderAttrib) make_off();
|
||
|
|
INLINE static CPT(RenderAttrib) make(PN_stdfloat left, PN_stdfloat right, PN_stdfloat bottom, PN_stdfloat top);
|
||
|
|
static CPT(RenderAttrib) make(const LVecBase4 &frame);
|
||
|
|
static CPT(RenderAttrib) make_default();
|
||
|
|
|
||
|
|
INLINE bool is_off() const;
|
||
|
|
|
||
|
|
INLINE const LVecBase4 &get_frame() const;
|
||
|
|
|
||
|
|
PUBLISHED:
|
||
|
|
MAKE_PROPERTY(frame, get_frame);
|
||
|
|
|
||
|
|
public:
|
||
|
|
virtual void output(std::ostream &out) const;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
virtual int compare_to_impl(const RenderAttrib *other) const;
|
||
|
|
virtual size_t get_hash_impl() const;
|
||
|
|
virtual CPT(RenderAttrib) compose_impl(const RenderAttrib *other) const;
|
||
|
|
|
||
|
|
private:
|
||
|
|
LVecBase4 _frame;
|
||
|
|
bool _off;
|
||
|
|
static CPT(RenderAttrib) _off_attrib;
|
||
|
|
|
||
|
|
PUBLISHED:
|
||
|
|
static int get_class_slot() {
|
||
|
|
return _attrib_slot;
|
||
|
|
}
|
||
|
|
virtual int get_slot() const {
|
||
|
|
return get_class_slot();
|
||
|
|
}
|
||
|
|
MAKE_PROPERTY(class_slot, get_class_slot);
|
||
|
|
|
||
|
|
public:
|
||
|
|
static void register_with_read_factory();
|
||
|
|
virtual void write_datagram(BamWriter *manager, Datagram &dg);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
static TypedWritable *make_from_bam(const FactoryParams ¶ms);
|
||
|
|
void fillin(DatagramIterator &scan, BamReader *manager);
|
||
|
|
|
||
|
|
public:
|
||
|
|
static TypeHandle get_class_type() {
|
||
|
|
return _type_handle;
|
||
|
|
}
|
||
|
|
static void init_type() {
|
||
|
|
RenderAttrib::init_type();
|
||
|
|
register_type(_type_handle, "ScissorAttrib",
|
||
|
|
RenderAttrib::get_class_type());
|
||
|
|
|
||
|
|
ScissorAttrib *attrib = new ScissorAttrib(LVecBase4(0, 1, 0, 1));
|
||
|
|
attrib->_off = true;
|
||
|
|
_attrib_slot = register_slot(_type_handle, 100, attrib);
|
||
|
|
}
|
||
|
|
virtual TypeHandle get_type() const {
|
||
|
|
return get_class_type();
|
||
|
|
}
|
||
|
|
virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
|
||
|
|
|
||
|
|
private:
|
||
|
|
static TypeHandle _type_handle;
|
||
|
|
static int _attrib_slot;
|
||
|
|
};
|
||
|
|
|
||
|
|
#include "scissorAttrib.I"
|
||
|
|
|
||
|
|
#endif
|