103 lines
3.9 KiB
C++
103 lines
3.9 KiB
C++
// Filename: texturePeeker.h
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// Created by: drose (26Aug08)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) Carnegie Mellon University. All rights reserved.
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//
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// All use of this software is subject to the terms of the revised BSD
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// license. You should have received a copy of this license along
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// with this source code in a file named "LICENSE."
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//
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////////////////////////////////////////////////////////////////////
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#ifndef TEXTUREPEEKER_H
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#define TEXTUREPEEKER_H
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#include "pandabase.h"
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#include "referenceCount.h"
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#include "texture.h"
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////////////////////////////////////////////////////////////////////
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// Class : TexturePeeker
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// Description : An instance of this object is returned by
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// Texture::peek(). This object allows quick and easy
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// inspection of a texture's texels by (u, v)
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// coordinates.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA_GOBJ TexturePeeker : public ReferenceCount {
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private:
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TexturePeeker(Texture *tex);
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public:
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INLINE bool is_valid() const;
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PUBLISHED:
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INLINE int get_x_size() const;
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INLINE int get_y_size() const;
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INLINE int get_z_size() const;
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void lookup(Colorf &color, float u, float v) const;
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void lookup(Colorf &color, float u, float v, float w) const;
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void filter_rect(Colorf &color,
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float min_u, float min_v,
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float max_u, float max_v) const;
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void filter_rect(Colorf &color,
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float min_u, float min_v, float min_w,
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float max_u, float max_v, float max_w) const;
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private:
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static void init_rect_minmax(int &min_x, int &max_x,
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float &min_u, float &max_u,
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int x_size);
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void accum_filter_z(Colorf &color, float &net,
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int min_x, int max_x, float min_u, float max_u,
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int min_y, int max_y, float min_v, float max_v,
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int min_z, int max_z, float min_w, float max_w) const;
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void accum_filter_y(Colorf &color, float &net, int zi,
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int min_x, int max_x, float min_u, float max_u,
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int min_y, int max_y, float min_v, float max_v,
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float weight) const;
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void accum_filter_x(Colorf &color, float &net, int yi, int zi,
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int min_x, int max_x, float min_u, float max_u,
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float weight) const;
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void accum_texel(Colorf &color, float &net, const unsigned char *&p,
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float weight) const;
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typedef double GetComponentFunc(const unsigned char *&p);
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typedef void GetTexelFunc(Colorf &color, const unsigned char *&p,
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GetComponentFunc *get_component);
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static void get_texel_r(Colorf &color, const unsigned char *&p, GetComponentFunc *get_component);
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static void get_texel_g(Colorf &color, const unsigned char *&p, GetComponentFunc *get_component);
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static void get_texel_b(Colorf &color, const unsigned char *&p, GetComponentFunc *get_component);
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static void get_texel_a(Colorf &color, const unsigned char *&p, GetComponentFunc *get_component);
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static void get_texel_l(Colorf &color, const unsigned char *&p, GetComponentFunc *get_component);
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static void get_texel_la(Colorf &color, const unsigned char *&p, GetComponentFunc *get_component);
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static void get_texel_rgb(Colorf &color, const unsigned char *&p, GetComponentFunc *get_component);
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static void get_texel_rgba(Colorf &color, const unsigned char *&p, GetComponentFunc *get_component);
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int _x_size;
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int _y_size;
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int _z_size;
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int _component_width;
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int _num_components;
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int _pixel_width;
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Texture::Format _format;
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Texture::ComponentType _component_type;
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CPTA_uchar _image;
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GetComponentFunc *_get_component;
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GetTexelFunc *_get_texel;
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friend class Texture;
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};
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#include "texturePeeker.I"
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#endif
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