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[CHG] Documentation improvement
[CHG] Avoid divisions by zero in GRRLIB_InitTileSet
This commit is contained in:
Crayon2000
parent
ca422e6867
commit
971bc0f9b5
2 changed files with 24 additions and 23 deletions
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@ -13,7 +13,7 @@
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#include "../lib/libjpeg/jpeglib.h"
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#include "GRRLIB.h"
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#define DEFAULT_FIFO_SIZE (256 * 1024)
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#define DEFAULT_FIFO_SIZE (256 * 1024) /**< GX fifo buffer size. */
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u32 fb = 0;
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static void *xfb[2] = {NULL, NULL};
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@ -36,7 +36,7 @@ inline void GRRLIB_FillScreen(u32 color) {
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* Draw a dot.
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* @param x specifies the x-coordinate of the dot.
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* @param y specifies the y-coordinate of the dot.
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* @param color the color of the dot.
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* @param color the color of the dot in RGBA format.
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*/
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inline void GRRLIB_Plot(f32 x, f32 y, u32 color) {
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Vector v[] = {{x,y,0.0f}};
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@ -60,7 +60,7 @@ void GRRLIB_NPlot(Vector v[], u32 color, long n) {
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* @param y1 start point for line for the y coordinate.
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* @param x2 end point for line for the x coordinate.
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* @param y2 end point for line for the x coordinate.
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* @param color line color.
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* @param color line color in RGBA format.
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*/
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inline void GRRLIB_Line(f32 x1, f32 y1, f32 x2, f32 y2, u32 color) {
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Vector v[] = {{x1,y1,0.0f}, {x2,y2,0.0f}};
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@ -74,7 +74,7 @@ inline void GRRLIB_Line(f32 x1, f32 y1, f32 x2, f32 y2, u32 color) {
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* @param y specifies the y-coordinate of the upper-left corner of the rectangle.
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* @param width the width of the rectangle.
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* @param height the height of the rectangle.
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* @param color the color of the rectangle.
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* @param color the color of the rectangle in RGBA format.
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* @param filled true to fill the rectangle with a color.
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*/
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inline void GRRLIB_Rectangle(f32 x, f32 y, f32 width, f32 height, u32 color, u8 filled) {
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@ -93,7 +93,7 @@ inline void GRRLIB_Rectangle(f32 x, f32 y, f32 width, f32 height, u32 color, u8
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/**
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* Draw a polygon.
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* @param v
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* @param color
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* @param color the color of the polygon in RGBA format.
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* @param n
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*/
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void GRRLIB_NGone(Vector v[], u32 color, long n) {
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@ -103,7 +103,7 @@ void GRRLIB_NGone(Vector v[], u32 color, long n) {
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/**
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* Draw a filled polygon.
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* @param v
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* @param color
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* @param color the color of the filled polygon in RGBA format.
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* @param n
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*/
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void GRRLIB_NGoneFilled(Vector v[], u32 color, long n) {
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@ -112,15 +112,17 @@ void GRRLIB_NGoneFilled(Vector v[], u32 color, long n) {
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/**
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* Initialize a tile set.
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* @param tex
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* @param tilew
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* @param tileh
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* @param tilestart
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* @param tex texture to initialize.
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* @param tilew widht of the tile.
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* @param tileh height of the tile.
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* @param tilestart offset for starting position.
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*/
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void GRRLIB_InitTileSet(struct GRRLIB_texImg *tex, unsigned int tilew, unsigned int tileh, unsigned int tilestart) {
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tex->tilew = tilew;
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tex->tileh = tileh;
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if(tilew) // Avoid division by zero
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tex->nbtilew = tex->w / tilew;
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if(tileh) // Avoid division by zero
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tex->nbtileh = tex->h / tileh;
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tex->tilestart = tilestart;
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}
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@ -369,7 +371,6 @@ void GRRLIB_FreeBMF(GRRLIB_bytemapFont bmf)
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* @return A GRRLIB_texImg structure filled with imgage informations.
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*/
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GRRLIB_texImg GRRLIB_LoadTexture(const unsigned char my_img[]) {
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if(my_img[0]==0xFF && my_img[1]==0xD8 && my_img[2]==0xFF) {
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return(GRRLIB_LoadTextureJPG(my_img));
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}
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@ -601,7 +602,7 @@ bool GRRLIB_RectOnRect(int rect1x, int rect1y, int rect1w, int rect1h, int rect2
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* @param x specifies the x-coordinate of the pixel in the texture.
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* @param y specifies the y-coordinate of the pixel in the texture.
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* @param tex texture to get the color from.
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* @return The color of a pixel.
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* @return The color of a pixel in RGBA format.
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*/
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u32 GRRLIB_GetPixelFromtexImg(int x, int y, GRRLIB_texImg tex) {
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u8 *truc = (u8*)tex.data;
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@ -624,7 +625,7 @@ u32 GRRLIB_GetPixelFromtexImg(int x, int y, GRRLIB_texImg tex) {
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* @param x specifies the x-coordinate of the pixel in the texture.
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* @param y specifies the y-coordinate of the pixel in the texture.
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* @param tex texture to set the color to.
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* @param color the color of the pixel.
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* @param color the color of the pixel in RGBA format.
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*/
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void GRRLIB_SetPixelTotexImg(int x, int y, GRRLIB_texImg tex, u32 color) {
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u8 *truc = (u8*)tex.data;
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@ -23,14 +23,14 @@
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* Structure to hold the texture informations.
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*/
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typedef struct GRRLIB_texImg{
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unsigned int w; /**< width of the texture. */
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unsigned int h; /**< height of the texture. */
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unsigned int tilew; /**< widht of a tile. */
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unsigned int tileh; /**< height of a tile. */
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unsigned int nbtilew; /**< number of tiles for the x axis. */
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unsigned int nbtileh; /**< number of tiles for the y axis. */
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unsigned int tilestart; /**< offset for starting position. */
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void *data; /**< pointer to the texture data. */
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unsigned int w; /**< Width of the texture. */
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unsigned int h; /**< Height of the texture. */
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unsigned int tilew; /**< Widht of a tile. */
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unsigned int tileh; /**< Height of a tile. */
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unsigned int nbtilew; /**< Number of tiles for the x axis. */
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unsigned int nbtileh; /**< Number of tiles for the y axis. */
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unsigned int tilestart; /**< Offset for starting position. */
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void *data; /**< Pointer to the texture data. */
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} GRRLIB_texImg;
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/**
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