Ray GetMouseRay(Vector2 mousePosition, Camera camera);
void DrawPixel(int posX, int posY, Color color);
void DrawPixelV(Vector2 position, Color color);
void DrawLine(int startPosX, int startPosY, int endPosX, int endPosY, Color color);
void DrawLineV(Vector2 startPos, Vector2 endPos, Color color);
void DrawLineEx(Vector2 startPos, Vector2 endPos, float thick, Color color);
void DrawLineBezier(Vector2 startPos, Vector2 endPos, float thick, Color color);
void DrawLineStrip(Vector2 *points, int numPoints, Color color);
void DrawCircle(int centerX, int centerY, float radius, Color color);
void DrawCircleSector(Vector2 center, float radius, int startAngle, int endAngle, int segments, Color color);
void DrawCircleSectorLines(Vector2 center, float radius, int startAngle, int endAngle, int segments, Color color);
void DrawCircleGradient(int centerX, int centerY, float radius, Color color1, Color color2);
void DrawCircleV(Vector2 center, float radius, Color color);
void DrawCircleLines(int centerX, int centerY, float radius, Color color);
void DrawEllipse(int centerX, int centerY, float radiusH, float radiusV, Color color);
void DrawEllipseLines(int centerX, int centerY, float radiusH, float radiusV, Color color);
void DrawRing(Vector2 center, float innerRadius, float outerRadius, int startAngle, int endAngle, int segments, Color color);
void DrawRingLines(Vector2 center, float innerRadius, float outerRadius, int startAngle, int endAngle, int segments, Color color);
void DrawRectangle(int posX, int posY, int width, int height, Color color);
void DrawRectangleV(Vector2 position, Vector2 size, Color color);
void DrawRectangleRec(Rectangle rec, Color color);
void DrawRectanglePro(Rectangle rec, Vector2 origin, float rotation, Color color);
void DrawRectangleGradientV(int posX, int posY, int width, int height, Color color1, Color color2);
void DrawRectangleGradientH(int posX, int posY, int width, int height, Color color1, Color color2);
void DrawRectangleGradientEx(Rectangle rec, Color col1, Color col2, Color col3, Color col4);
void DrawRectangleLines(int posX, int posY, int width, int height, Color color);
void DrawRectangleLinesEx(Rectangle rec, int lineThick, Color color);
void DrawRectangleRounded(Rectangle rec, float roundness, int segments, Color color);
void DrawRectangleRoundedLines(Rectangle rec, float roundness, int segments, int lineThick, Color color);
void DrawTriangle(Vector2 v1, Vector2 v2, Vector2 v3, Color color);
void DrawTriangleLines(Vector2 v1, Vector2 v2, Vector2 v3, Color color);
void DrawTriangleFan(Vector2 *points, int numPoints, Color color);
void DrawTriangleStrip(Vector2 *points, int pointsCount, Color color);
void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color color);
void DrawPolyLines(Vector2 center, int sides, float radius, float rotation, Color color);
bool CheckCollisionRecs(Rectangle rec1, Rectangle rec2);
bool CheckCollisionCircles(Vector2 center1, float radius1, Vector2 center2, float radius2);
bool CheckCollisionCircleRec(Vector2 center, float radius, Rectangle rec);
Rectangle GetCollisionRec(Rectangle rec1, Rectangle rec2);
bool CheckCollisionPointRec(Vector2 point, Rectangle rec);
bool CheckCollisionPointCircle(Vector2 point, Vector2 center, float radius);
bool CheckCollisionPointTriangle(Vector2 point, Vector2 p1, Vector2 p2, Vector2 p3);
void DrawSphere(Vector3 centerPos, float radius, Color color);
void DrawRay(Ray ray, Color color);