From e59d89f39f090f8feb16a48ed150e5ac48c2858f Mon Sep 17 00:00:00 2001
From: Masaya Tojo <masaya@tojo.tokyo>
Date: Sat, 10 Aug 2024 22:53:12 +0900
Subject: Rename procedures from `image-*` to `pnm-image-*`

---
 README.md | 51 ++++++++++++++++++++++++++-------------------------
 1 file changed, 26 insertions(+), 25 deletions(-)

(limited to 'README.md')

diff --git a/README.md b/README.md
index 35cbc47..34ec222 100644
--- a/README.md
+++ b/README.md
@@ -14,93 +14,94 @@ accessing and modifying pixel data.
 
 ### Image
 
-#### `(image? x) → boolean`
+#### `(pnm-image? x) → boolean`
 
-Returns `#t` if `x` is a valid image object; otherwise, it returns
+Returns `#t` if `x` is a valid pnm-image object; otherwise, it returns
 `#f`.
 
-#### `(image-type image) → 'pbm | 'pgm | 'ppm`
+#### `(pnm-image-type pnm-image) → 'pbm | 'pgm | 'ppm`
 
-Returns the type of the given image.
+Returns the type of the given pnm-image.
 
 - `pbm`: Portable Bit Map
 - `pgm`: Portable Gray Map
 - `ppm`: Portable Pixel Map
 
-#### `(image-width image) → integer`
+#### `(pnm-image-width pnm-image) → integer`
 
-Returns the width of `image`.
+Returns the width of `pnm-image`.
 
-#### `(image-height image) → integer`
+#### `(pnm-image-height pnm-image) → integer`
 
-Returns the height of `image`.
+Returns the height of `pnm-image`.
 
 ### PBM (Portable Bit Map)
 
-#### `(make-pbm-image width height) → <image>`
+#### `(make-pbm-image width height) → <pnm-image>`
 
 Returns a new Portable Bit Map (PBM) image with the specified width
 and height.
 
-#### `(image-maxval pbm-image) → #t`
+#### `(pnm-image-maxval pbm-image) → #t`
 
 Returns the maximum value for pixel intensity in a PBM image, which is
+
 always `#t` for PBM images, indicating binary values (black and
 white).
 
-#### `(image-ref pbm-image x y) → boolean`
+#### `(pnm-image-ref pbm-image x y) → boolean`
 
 Returns the value of the pixel at coordinates `(x, y)` in the
 specified `image`. The return value is `#t` for a white pixel and `#f`
 for a black pixel.
 
-#### `(image-set! pbm-image x y b)`
+#### `(pnm-image-set! pbm-image x y b)`
 
-Sets the pixel at coordinates `(x, y)` in the specified `image` to
+Sets the pixel at coordinates `(x, y)` in the specified `pnm-image` to
 the boolean value `b`. If `b` is `#t`, the pixel is set to white; if
 `#f`, it is set to black.
 
 ### PGM (Portable PGM Map)
 
-#### `(make-pgm-image width height [maxval]) → <image>`
+#### `(make-pgm-image width height [maxval]) → <pnm-image>`
 
 Creates a new Portable Gray Map (PGM) image with the specified width
 and height. The optional `maxval` parameter defines the maximum pixel
 intensity, defaulting to 255 if not provided.
 
-#### `(image-maxval pgm-image) → integer`
+#### `(pnm-image-maxval pgm-image) → integer`
 
 Returns the maximum pixel intensity value for the specified PGM image.
 
-#### `(image-ref pgm-image x y) → integer`
+#### `(pnm-image-ref pgm-image x y) → integer`
 
 Returns the gray value of the pixel at coordinates `(x, y)` in the
 specified PGM image. The value is an integer between 0 and `maxval`.
 
-#### `(image-set! pgm-image x y v)`
+#### `(pnm-image-set! pgm-image x y v)`
 
 Sets the pixel at coordinates `(x, y)` in the specified PGM image to
 the given integer value `v`, which must be between 0 and `maxval`.
 
 ### PPM (Portable PPM Map)
 
-#### `(make-ppm-image width height [maxval]) → <image>`
+#### `(make-ppm-image width height [maxval]) → <pnm-image>`
 
 Creates a new Portable Pixel Map (PPM) image with the specified width
 and height. The optional `maxval` parameter defines the maximum color
 intensity, defaulting to 255 if not provided.
 
-#### `(image-maxval ppm-image) → integer`
+#### `(pnm-image-maxval ppm-image) → integer`
 
 Returns the maximum color intensity value for the specified PPM image.
 
-#### `(image-ref ppm-image x y) → (values integer integer integer)`
+#### `(pnm-image-ref ppm-image x y) → (values integer integer integer)`
 
 Returns the RGB values of the pixel at coordinates `(x, y)` in the
 specified PPM image as three integers, representing the red, green,
 and blue components, respectively.
 
-### `(image-set! ppm-image x y r g b)`
+### `(pnm-image-set! ppm-image x y r g b)`
 
 Sets the pixel at coordinates `(x, y)` in the specified PPM image to
 the given RGB values `r`, `g`, and `b`, which must be integers between
@@ -109,7 +110,7 @@ the given RGB values `r`, `g`, and `b`, which must be integers between
 
 ### Reading
 
-#### `(image-read port) → <image>`
+#### `(pnm-image-read port) → <pnm-image>`
 
 Reads a PNM image from the specified input `port` and returns the
 corresponding image object (PBM, PGM, or PPM).
@@ -117,14 +118,14 @@ corresponding image object (PBM, PGM, or PPM).
 ### `(pnm-parse-error? exn) → boolean`
 
 Returns `#t` if the exception `exn` is a parse error that occurred
-during the execution of the `image-read` procedure; otherwise, it
+during the execution of the `pnm-image-read` procedure; otherwise, it
 returns `#f`.
 
 ### Writing
 
-### `(image-write image port)`
+### `(pnm-image-write pnm-image port)`
 
-Writes the specified `image` (PBM, PGM, or PPM) to the given output
+Writes the specified `pnm-image` (PBM, PGM, or PPM) to the given output
 `port`.
 
 ### Downloading Code with Git
-- 
cgit v1.2.3