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KJB
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KJB
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#include <i_opengl_buf.h>
Public Member Functions | |
| Opengl_framebuffer_image (uint32_t x, uint32_t y, uint32_t height, uint32_t width) | |
 Public Member Functions inherited from kjb::Image | |
| Image (int rows=0, int cols=0) | |
| Construct image of specified size, defaults to zero by zero. More... | |
| Image (const kjb_c::Matrix &src) | |
| Construct grayscale image from c-style matrix. More... | |
| Image (const Matrix &src) | |
| Construct grayscale image from matrix. More... | |
| Image (const Image &src) | |
| Copy ctor, performs a deep copy (use sparingly) More... | |
| Image (const std::string &fname) | |
| Read image from a named file. More... | |
| Image (Impl_type *wrap_me) | |
| Wrap up an "unsafe" image so it is certain to be destroyed. More... | |
| Image (int num_rows, int num_cols, int r, int g, int b) | |
| Create an image with pixels initialized to the given value. More... | |
| virtual | ~Image () |
| Dtor simply wraps kjb_free_image() More... | |
| void | swap (Image &other) |
| Swap the implementation of two images. More... | |
| Image & | scale (double factor) |
| Scale the image by factor using imagemagick (deprecated). More... | |
| Image & | crop (int r, int c, int num_rows, int num_cols) |
| Crop this image. More... | |
| void | write (const std::string &fname) const |
| Write to a file. More... | |
| int | get_num_rows () const |
| Return the number of rows in the image. More... | |
| int | get_num_cols () const |
| Return the number of columns in the image. More... | |
| int | get_length () const |
| Return the number of elements (pixels) in the image. More... | |
| Image & | operator= (const kjb_c::KJB_image &src) |
| Deep copy assignment from C-type image. More... | |
| Image & | operator= (const Image &src) |
| Deep copy assignment. More... | |
| Image & | operator+= (const Image &op2) |
| Add an image from this image, in place. More... | |
| Image & | operator-= (const Image &op2) |
| Subtract an image from this image, in place. More... | |
| Image & | operator*= (double op2) |
| Multiply this image by a scalar; i.e., scale this image in channel space. More... | |
| Image & | operator/= (double op2) |
| Divide this image by a scalar; i.e., scale this image in channel space. More... | |
| float & | operator() (int row, int col, int channel) |
| Unchecked access of lvalue at given row, column, and RGB_channel. More... | |
| float | operator() (int row, int col, int channel) const |
| Unchecked access of rvalue at given row, column, and RGB_channel. More... | |
| Pixel_type & | operator() (int row, int col) |
| Lvalue pixel access at given row & column, no bounds-checking. The coordinates are row,column NOT x,y ! More... | |
| const Pixel_type & | operator() (int row, int col) const |
| Rvalue pixel access at given row & column, no bounds-checking. The coordinates are row,column NOT x,y ! More... | |
| Pixel_type & | operator() (int index) |
| Access lvalue at row-major index, without bounds-checking. More... | |
| const Pixel_type & | operator() (int index) const |
| Access rvalue at row-major index, without bounds-checking. More... | |
| void | invert () |
| Invert this image; i.e., dark becomes light and vice-versa. More... | |
| Image | get_inverted () const |
| Generate an inverted version of this image (deprecated). More... | |
| Matrix | get_channel (int index) const |
| void | check_bounds (int row, int col) const |
| Test whether row, column coordinates are valid. More... | |
| float & | at (int row, int col, int channel) |
| Access lvalue of pixel channel at row, column coordinates. More... | |
| float | at (int row, int col, int channel) const |
| Access rvalue of pixel channel at row, column coordinates. More... | |
| Pixel_type & | at (int row, int col) |
| Access pixel lvalue at row, column coordinates. More... | |
| const Pixel_type & | at (int row, int col) const |
| Access pixel rvalue at row, column coordinates. More... | |
| const Pixel_type & | at (int index) const |
| Access pixel rvalue at row-major index. More... | |
| Pixel_type & | at (int index) |
| Access pixel lvalue at row-major index. More... | |
| const Impl_type * | c_ptr () const |
| Access a pointer to the underlying implementation. More... | |
| Impl_type * | non_const_c_ptr () const |
| Access a pointer to the underlying implementation, use with care. More... | |
| void | set_c_ptr (Impl_type *iimage) |
| set this matrix to point to a different c memory, freeing the previously pointed area More... | |
| Matrix | to_grayscale_matrix () const |
| Convert this image to a single matrix by simple averaging of the pixels. More... | |
| Matrix | to_grayscale_matrix (double r_w, double g_w, double b_w) const |
| Convert this image to a single matrix by weighted averaging of the pixels. More... | |
| Matrix | to_channel_matrix (RGB_channel channel) const |
| Convert this image to a single matrix by simple averaging of the pixels. More... | |
| Int_matrix | to_color_matrix (double scale=1.0) const |
| Convert this image to a single matrix containing RGBA values. The first eight least significant bits are red, the next least least significant octet is green, and so on. More... | |
| void | from_color_matrix (const Int_matrix &m) |
| Construct an image from a matrix containing RGBA values. Each element of matrix m is an integer which consists of ... More... | |
| void | from_color_matrices (const Matrix &red, const Matrix &green, const Matrix &blue) |
| Contruct an image from three matrices representing red, green, blue channels. More... | |
| template<class InputIterator > | |
| Vector | intensity_histogram (InputIterator first, InputIterator last) const |
| Computes the intensity histogram of a region – given by a range of pairs – of this image. More... | |
| void | draw_point (int row, int col, int width, Pixel_type p) |
| Draw a point on the image. More... | |
| void | draw_line_segment (int row_from, int col_from, int row_to, int col_to, int width, Pixel_type p) |
| Draw a line segment on the image. More... | |
| void | draw_arrow (const Vector &src, const Vector &dest, const Image::Pixel_type pixel) |
| Draw an arrow from src to dest. More... | |
| template<class Iterator > | |
| void | draw_polyline (Iterator begin, Iterator end, int width, Pixel_type p) |
| Draw a polyline on the image, i.e., a chain of line segments. More... | |
| void | draw_aa_rectangle (int first_row, int first_col, int last_row, int last_col, Pixel_type p) |
| Draw a solid, axis-aligned rectangle on the image. More... | |
| void | draw_aa_rectangle_outline (int first_row, int first_col, int last_row, int last_col, Pixel_type p) |
| Draw the outline of an, axis-aligned rectangle on the image. More... | |
| void | draw_circle (int center_row, int center_col, int radius, int line_width, Pixel_type p) |
| Draw a circle on the image. More... | |
| void | draw_disk (int center_row, int center_col, int radius, Pixel_type p) |
| draw a disk (a filled circle) on the image, of a given color. More... | |
| int | draw_text_center (int row, int col, const std::string &text, const std::string &font_file="times14") |
| Draw the text on the image. More... | |
| int | draw_text_top_left (int row, int col, const std::string &text, const std::string &font_file="times14") |
| Draw the text on the image. More... | |
| void | draw_image (const kjb_c::KJB_image *overlay, int row=0, int col=0, int scale=1) |
| Overlay another image on this image, with an optional offset. More... | |
| void | draw_image (const Image &overlay, int row=0, int col=0, int scale=1) |
| This is an overload of draw_image() taking a C-style pointer. More... | |
| int | display (const std::string &title=std::string()) const |
| Show the image and return an image number (for closing later). More... | |
| int | get_flags () const |
| return copy of the "flags" field of underlying KJB_image object More... | |
| int | set_flags (int new_flags) |
| set "flags" field of underlying KJB_image; return previous flags More... | |
Additional Inherited Members | |
| Public Types inherited from kjb::Image | |
| enum | RGB_channel { RED, GREEN, BLUE, END_CHANNELS } |
| Constants for accessing color channels via number, with at(). More... | |
| typedef kjb_c::KJB_image | Impl_type |
| typedef kjb_c::Pixel | Pixel_type |
| Static Public Member Functions inherited from kjb::Image | |
| static Image | create_zero_image (int rows, int cols) |
| Create an empty image of valid zero pixels, r=g=b=0. More... | |
| static Image | create_initialized_image (int rows, int cols, int r, int g, int b) |
| Create an empty image with pixels initialized to (r, g, b) More... | |
| Protected Attributes inherited from kjb::Image | |
| Impl_type * | m_image |
Class for constructing an image from the opengl framebuffer
Do not use this class in new code.
| kjb::Opengl_framebuffer_image::Opengl_framebuffer_image | ( | uint32_t | x, |
| uint32_t | y, | ||
| uint32_t | width, | ||
| uint32_t | height | ||
| ) |
Initialize image from opengl framebuffer
1.8.6