From c41ff6df4dfac0feba88f0f359b7347a36301bba Mon Sep 17 00:00:00 2001
From: JM <crewgan@pop-os.localdomain>
Date: Mon, 2 May 2022 11:38:34 +0200
Subject: [PATCH] struct + drawline + makefile
---
Makefile | 53 +++++++++++++++----------------------------------
src/draw.c | 49 +++++++++++++++++++++++++++++++++++++++++++++
src/draw.h | 9 +++++++++
src/field.c | 2 +-
src/main.c | 8 ++++++++
utils/gfx/gfx.c | 31 ++++++++---------------------
utils/gfx/gfx.h | 7 -------
7 files changed, 91 insertions(+), 68 deletions(-)
create mode 100644 src/draw.c
create mode 100644 src/draw.h
diff --git a/Makefile b/Makefile
index c2fa0b1..bfd0005 100644
--- a/Makefile
+++ b/Makefile
@@ -1,45 +1,24 @@
-CC := gcc
-CFLAGS := -std=c11 -Wall -Wextra -fsanitize=address -fsanitize=leak -pedantic -Ofast -g
-LDFLAGS := ${CFLAGS} -lm -lSDL2
+#The compiler
+CC:=gcc
+#The flags passed to the compiler
+CFLAGS:=-g -O3 -Wall -Wextra -fsanitize=address -fsanitize=leak -std=gnu11
+#The flags passed to the linker
+LDFLAGS:=-lm
+VPATH:=utils utils/vec2 utils/gfx src
-SRCDIR := src
-OUTDIR := build
+main: main.o vec2.o utils.o field.o gfx.o
+ $(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS) -lSDL2
-TARGET := ${OUTDIR}/main
+tests: vec_tests.o vec2.o
+ $(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
-SRC := $(wildcard ${SRCDIR}/*.c)
-HDR := $(wildcard ${SRCDIR}/*.h)
-OBJ := $(patsubst %.c,${OUTDIR}/%.o,${SRC})
+field.o: field.h
+vec2.o: vec2.h
-all: ${TARGET} ${DOC}
+utils.o: utils.h
-
-${TARGET}: ${OBJ} utils ${OUTDIR}
- ${CC} ${LDFLAGS} -o $@ ${OBJ}
-
-
-${OBJ}: ${OUTDIR}/%.o: %.c ${HDR} ${OUTDIR}
- ${CC} ${CFLAGS} -c -o $@ $<
-
-
-${OUTDIR}:
- mkdir -p ${OUTDIR}
-
-
-
-.PHONY: all clean doc exec utils
-
-doc:
- make -C doc
-
-utils:
- make -C utils
+gfx.o: gfx.h
clean:
- rm -rf ${OUTDIR}
- make -C doc clean
- make -C utils clean
-
-exec: ${TARGET}
- ./${TARGET}
+ rm -f *.o main tests
diff --git a/src/draw.c b/src/draw.c
new file mode 100644
index 0000000..0f1d9c2
--- /dev/null
+++ b/src/draw.c
@@ -0,0 +1,49 @@
+#include <utils/gfx/gfx.h>
+#include <field.h>
+/*
+(50, 50) → (75, 50)1 , (50, 50) → (72, 62), (50, 50) → (62, 72)
+(50, 50) → (50, 75), (50, 50) → (38, 72), (50, 50) → (28, 62)
+(50, 50) → (25, 50), (50, 50) → (28, 38), (50, 50) → (37, 28)
+(50, 50) → (50, 25), (50, 50) → (62, 28), (50, 50) → (72, 37)
+*/
+
+void gfx_draw_line(struct gfx_context_t *ctxt, coordinates p0, coordinates p1, uint32_t color) {
+ // x =col, y = row
+ // x0 p0.column
+ // x1 p1.column
+ // y0 p0.row
+ // y1 p1.row
+ int dx = abs(p1.column - p0.column);
+ int sx = p0.column < p1.column ? 1 : -1;
+ int dy = -abs(p1.row - p0.row);
+ int sy = p0.row < p1.row ? 1 : -1;
+ int error = dx + dy;
+
+ while (true) {
+ //plot(p0.column, p0.row);
+ gfx_putpixel(ctxt, p0.column, p0.row, color);
+
+ if (p0.column == p1.column && p0.row == p1.row)
+ break;
+
+ int e2 = 2 * error;
+
+ if (e2 >= dy) {
+ if (p0.column == p1.column)
+ break;
+ error = error + dy;
+ p0.column = p0.column + sx;
+ }
+
+ if (e2 <= dx) {
+ if (p0.row == p1.row)
+ break;
+ error = error + dx;
+ p0.row = p0.row + sy;
+ }
+ }
+
+}
+
+void gfx_draw_circle(struct gfx_context_t *ctxt, coordinates c, uint32_t r, uint32_t color) {
+}
diff --git a/src/draw.h b/src/draw.h
new file mode 100644
index 0000000..dd02f59
--- /dev/null
+++ b/src/draw.h
@@ -0,0 +1,9 @@
+#ifndef DRAW_H
+#define DRAW_H
+
+#include <field.h>
+
+void gfx_draw_line(struct gfx_context_t *ctxt, coordinates p0, coordinates p1, uint32_t color);
+void gfx_draw_circle(struct gfx_context_t *ctxt, coordinates c, uint32_t r, uint32_t color);
+
+#endif
\ No newline at end of file
diff --git a/src/field.c b/src/field.c
index 8bff078..18a18c2 100644
--- a/src/field.c
+++ b/src/field.c
@@ -1,4 +1,4 @@
-#include "physics.h"
+#include "field.h"
#include <math.h>
#include <stdlib.h>
diff --git a/src/main.c b/src/main.c
index d77a0e8..2fbb85c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,5 +1,13 @@
#include <stdlib.h>
+//#include <utils/gfx/gfx.h>
int main() {
+ /*
+ (50, 50) → (75, 50)1 , (50, 50) → (72, 62), (50, 50) → (62, 72)
+ (50, 50) → (50, 75), (50, 50) → (38, 72), (50, 50) → (28, 62)
+ (50, 50) → (25, 50), (50, 50) → (28, 38), (50, 50) → (37, 28)
+ (50, 50) → (50, 25), (50, 50) → (62, 28), (50, 50) → (72, 37)
+ */
+ //struct gfx_content_t* gfx = gfx_create("main", 100, 100);
return EXIT_SUCCESS;
}
diff --git a/utils/gfx/gfx.c b/utils/gfx/gfx.c
index a77eb85..27aeb30 100644
--- a/utils/gfx/gfx.c
+++ b/utils/gfx/gfx.c
@@ -5,6 +5,7 @@
/// Uses the SDL2 library.
#include "gfx.h"
+
#include <assert.h>
/// Create a fullscreen graphic window.
@@ -12,8 +13,7 @@
/// @param width Width of the window in pixels.
/// @param height Height of the window in pixels.
/// @return a pointer to the graphic context or NULL if it failed.
-struct gfx_context_t *gfx_create(char *title, uint32_t width, uint32_t height)
-{
+struct gfx_context_t *gfx_create(char *title, uint32_t width, uint32_t height) {
if (SDL_Init(SDL_INIT_VIDEO) != 0)
goto error;
SDL_Window *window = SDL_CreateWindow(title, SDL_WINDOWPOS_UNDEFINED,
@@ -47,8 +47,7 @@ error:
/// @param column X coordinate of the pixel.
/// @param row Y coordinate of the pixel.
/// @param color Color of the pixel.
-void gfx_putpixel(struct gfx_context_t *ctxt, uint32_t column, uint32_t row, uint32_t color)
-{
+void gfx_putpixel(struct gfx_context_t *ctxt, uint32_t column, uint32_t row, uint32_t color) {
if (column < ctxt->width && row < ctxt->height)
ctxt->pixels[ctxt->width * row + column] = color;
}
@@ -56,8 +55,7 @@ void gfx_putpixel(struct gfx_context_t *ctxt, uint32_t column, uint32_t row, uin
/// Clear the specified graphic context.
/// @param ctxt Graphic context to clear.
/// @param color Color to use.
-void gfx_clear(struct gfx_context_t *ctxt, uint32_t color)
-{
+void gfx_clear(struct gfx_context_t *ctxt, uint32_t color) {
int n = ctxt->width * ctxt->height;
while (n)
ctxt->pixels[--n] = color;
@@ -65,8 +63,7 @@ void gfx_clear(struct gfx_context_t *ctxt, uint32_t color)
/// Display the graphic context.
/// @param ctxt Graphic context to clear.
-void gfx_present(struct gfx_context_t *ctxt)
-{
+void gfx_present(struct gfx_context_t *ctxt) {
SDL_UpdateTexture(
ctxt->texture, NULL, ctxt->pixels, ctxt->width * sizeof(uint32_t));
SDL_RenderCopy(ctxt->renderer, ctxt->texture, NULL, NULL);
@@ -75,8 +72,7 @@ void gfx_present(struct gfx_context_t *ctxt)
/// Destroy a graphic window.
/// @param ctxt Graphic context of the window to close.
-void gfx_destroy(struct gfx_context_t *ctxt)
-{
+void gfx_destroy(struct gfx_context_t *ctxt) {
SDL_ShowCursor(SDL_ENABLE);
SDL_DestroyTexture(ctxt->texture);
SDL_DestroyRenderer(ctxt->renderer);
@@ -93,22 +89,11 @@ void gfx_destroy(struct gfx_context_t *ctxt)
/// If a key was pressed, returns its key code (non blocking call).
/// List of key codes: https://wiki.libsdl.org/SDL_Keycode
/// @return the key that was pressed or 0 if none was pressed.
-SDL_Keycode gfx_keypressed()
-{
+SDL_Keycode gfx_keypressed() {
SDL_Event event;
- if (SDL_PollEvent(&event))
- {
+ if (SDL_PollEvent(&event)) {
if (event.type == SDL_KEYDOWN)
return event.key.keysym.sym;
}
return 0;
-}
-
-
-void gfx_draw_line(struct gfx_context_t *ctxt, coordinates_t p0, coordinates_t p1, uint32_t color){
-
-}
-
-void gfx_draw_circle(struct gfx_context_t *ctxt, coordinates_t c, uint32_t r, uint32_t color){
-
}
\ No newline at end of file
diff --git a/utils/gfx/gfx.h b/utils/gfx/gfx.h
index 37423cc..6e25656 100644
--- a/utils/gfx/gfx.h
+++ b/utils/gfx/gfx.h
@@ -29,11 +29,6 @@ struct gfx_context_t
uint32_t height;
};
-typedef struct
-{
- uint32_t row;
- uint32_t column;
-} coordinates_t;
extern void gfx_putpixel(
struct gfx_context_t *ctxt, uint32_t column, uint32_t row, uint32_t color);
@@ -42,7 +37,5 @@ extern struct gfx_context_t *gfx_create(char *text, uint32_t width, uint32_t hei
extern void gfx_destroy(struct gfx_context_t *ctxt);
extern void gfx_present(struct gfx_context_t *ctxt);
extern SDL_Keycode gfx_keypressed();
-void gfx_draw_line(struct gfx_context_t *ctxt, coordinates_t p0, coordinates_t p1, uint32_t color);
-void gfx_draw_circle(struct gfx_context_t *ctxt, coordinates_t c, uint32_t r, uint32_t color);
#endif
--
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