herbglitch/archeus
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

point centering functions added for rectangle and point

Browse source
This commit is contained in:
herbglitch 2025-04-13 05:36:54 -06:00
parent d89c95688e
commit a829b656f3
4 changed files with 64 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

19
include/arc/math/point.h
View file

@ -27,8 +27,27 @@ typedef struct ARC_DPoint {
double y;
} ARC_DPoint;
typedef struct ARC_Rect ARC_Rect;
typedef struct ARC_FRect ARC_FRect;
ARC_FPoint ARC_FPoint_Lerp(ARC_FPoint *start, ARC_FPoint *end, float t);
/**
* @brief centers point on given bounds
*
* @param point ARC_Point to be centered
* @param bounds ARC_Rect area to center point on
*/
void ARC_Point_CenterOn(ARC_Point *point, ARC_Rect bounds);
/**
* @brief centers fpoint on given bounds
*
* @param point ARC_FPoint to be centered
* @param bounds ARC_FRect area to center point on
*/
void ARC_FPoint_CenterOn(ARC_FPoint *point, ARC_FRect bounds);
#ifdef __cplusplus
}
#endif

16
include/arc/math/rectangle.h
View file

@ -47,6 +47,22 @@ void ARC_Rect_CenterOn(ARC_Rect *rect, ARC_Rect bounds);
*/
void ARC_FRect_CenterOn(ARC_FRect *rect, ARC_FRect bounds);
/**
* @brief centers rect on a given point
*
* @param rect ARC_Rect to be centered
* @param bounds ARC_Point point to center rect on
*/
void ARC_Rect_CenterOnPoint(ARC_Rect *rect, ARC_Point center);
/**
* @brief centers rect on a given point
*
* @param rect ARC_FRect to be centered
* @param bounds ARC_FPoint point to center rect on
*/
void ARC_FRect_CenterOnPoint(ARC_FRect *rect, ARC_FPoint center);
/**
* @brief casts Rect to FRect
*

18
src/math/point.c
View file

@ -1,8 +1,26 @@
#include "arc/math/point.h"
#include "arc/math/rectangle.h"
ARC_FPoint ARC_FPoint_Lerp(ARC_FPoint *start, ARC_FPoint *end, float t){
return (ARC_FPoint){
(1.0f - t) * start->x + t * end->x,
(1.0f - t) * start->y + t * end->y
};
}
void ARC_Point_CenterOn(ARC_Point *point, ARC_Rect bounds){
*point = (ARC_Point){
(bounds.w / 2) + bounds.x,
(bounds.h / 2) + bounds.y
};
}
void ARC_FPoint_CenterOn(ARC_FPoint *point, ARC_FRect bounds){
*point = (ARC_FPoint){
(bounds.w / 2.0f) + bounds.x,
(bounds.h / 2.0f) + bounds.y
};
}

13
src/math/rectangle.c
View file

@ -1,9 +1,6 @@
#include "arc/math/rectangle.h"
#include "arc/std/bool.h"
//VERY TEMP
// #include <SDL.h>
void ARC_Rect_CenterOn(ARC_Rect *rect, ARC_Rect bounds){
rect->x = (bounds.x + (bounds.w / 2)) - (rect->w / 2);
rect->y = (bounds.y + (bounds.h / 2)) - (rect->h / 2);
@ -14,6 +11,16 @@ void ARC_FRect_CenterOn(ARC_FRect *rect, ARC_FRect bounds){
rect->y = (bounds.y + (bounds.h / 2.0f)) - (rect->h / 2.0f);
}
void ARC_Rect_CenterOnPoint(ARC_Rect *rect, ARC_Point center){
rect->x = center.x - (rect->w / 2);
rect->y = center.y - (rect->h / 2);
}
void ARC_FRect_CenterOnPoint(ARC_FRect *rect, ARC_FPoint center){
rect->x = center.x - (rect->w / 2.0f);
rect->y = center.y - (rect->h / 2.0f);
}
ARC_FRect ARC_Rect_CastToFRect(ARC_Rect rect){
return (ARC_FRect){
.x = (float)rect.x,