Raylib 基本绘图操作

开篇

开头测试了几个 二维坐标、三维坐标、多维坐标，这些都封装在结构体中，直接拿去用即可
绘图的话就两个经典函数 BeginDrawing() 和 EndDrawing()
请注意:不要把绘图和事件合起来写在一块地方不利于后续开发

#include <stdio.h>
#include <raylib.h>
#include <time.h>
#include <stdlib.h>
void test_database()
{
	Vector2 p;
	p.x = 11;
	p.y = 2;

	Vector3 o;
	o.x = 10;
	o.y = 11;
	o.z = 10;
}
int main()
{
	srand((unsigned int)time(NULL));
	int x = 0, y = 0;
	InitWindow(800, 600,"Alaso_shuang");
	while (!WindowShouldClose())
	{
		BeginDrawing();
		Color c = { 0,0,0 };
		for (int i = 0; i < 1000; i++)
		{
			x = rand() % 800;
			y = rand() % 600;
			DrawPixel(x, y, WHITE);
		}
		ClearBackground(c);
		EndDrawing();
	}
	CloseWindow();
	return 0;
}

画圆测试

#include <stdio.h>
#include <raylib.h>
#include <time.h>
#include <stdlib.h>
void test_database()
{
	Vector2 p;
	p.x = 11;
	p.y = 2;

	Vector3 o;
	o.x = 10;
	o.y = 11;
	o.z = 10;
}
int main()
{
	srand((unsigned int)time(NULL));
	int x = 0, y = 0;
	InitWindow(800, 600,"Alaso_shuang");
	while (!WindowShouldClose())
	{
		BeginDrawing();
		Color c = { 0,0,0 };
		/*Color c2 = { 255,255,255 };*/
		for (int i = 0; i < 1000; i++)
		{
			x = rand() % 800;
			y = rand() % 600;
			DrawPixel(x, y, GREEN);
		}
		DrawCircle(20, 40, 10, GRAY);
		ClearBackground(c);
		EndDrawing();
	}
	CloseWindow();
	return 0;
}

绘制三角形

确定三个点坐标即可

#include <raylib.h>
#include <stdio.h>

//struct Vector
//{
//	int x;
//	int y;
//}op,op2;
int main()
{
	/*struct Vector op,op2;
	op = { 100,100 };
	op.x = 100;
	op.y = 200;
	op2 = { 200,200 };
	op2.x = 1000;
	op2.y = 2000;
	printf("%d %d\n", op.x, op.y);
	printf("%d %d\n", op2.x, op2.y);*/
	InitWindow(600, 800, "Alaso_shuang");
	Vector2 v1 = Vector2{ 200,200 };
	Vector2 v2 = Vector2{ 400,200 };
	Vector2 v3 = Vector2{ 300,100 };
	while (!WindowShouldClose())
	{
		BeginDrawing();
		ClearBackground(WHITE);
		/*DrawRectangle(250, 250, 100, 200,RED);
		DrawTriangleLines(Vector2{ 10,20 }, Vector2{ 70,90 }, Vector2{ 120,300 }, BLACK);*/
		DrawTriangle(v1, v2, v3, GREEN);
		DrawTriangleLines(v1, v2, v3, BLUE);
		EndDrawing();
	}
	return 0;
}

旋转的多边形

#include <raylib.h>
#include <iostream>
#include <math.h>
int main()
{
	InitWindow(800,600,"Alaso_shuang");
	while (!WindowShouldClose())
	{
		float time = GetTime();
		float value = sin(time);
		BeginDrawing();
		ClearBackground(WHITE);


		DrawPoly(Vector2{ 600,500 }, 6, 90, 180 * value, ORANGE);
		EndDrawing();
	}

	return 0;
}

渐变色旋转多边形

#include <raylib.h>
#include <iostream>
#include <math.h>
int main()
{
	InitWindow(800,600,"Alaso_shuang");
	while (!WindowShouldClose())
	{
		float time = GetTime();
		float value = sin(time);
		Color o = ORANGE;
		Color R = RED;
		o.g *= value;
		R.b *= value;
		BeginDrawing();
		ClearBackground(WHITE);


		DrawPoly(Vector2{ 600,500 }, 6, 90, 180 * value, o);
		DrawPolyLinesEx(Vector2{ 300,200 }, 7, 80, 360 * value, 90, RED);
		EndDrawing();
	}

	return 0;
}

渐变色长方形

#include <raylib.h>
#include <iostream>
#include <math.h>
int main()
{
	InitWindow(800,600,"Alaso_shuang");
	while (!WindowShouldClose())
	{
		float time = GetTime();
		float xvalue = sin(time) / 2.0f + 0.5f;
		float yvalue = cos(time) / 2.0f + 0.5f;
		Rectangle rec{ 300,200,250,240 };
		BeginDrawing();
		ClearBackground(Color{125,156,178});
		DrawRectangleGradientEx(rec,
			Fade(PINK, xvalue),
			Fade(BLUE, xvalue),
			Fade(ORANGE, yvalue),
			Fade(RED, yvalue)
		);
		EndDrawing();
	}

	return 0;
}