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DrawingHelpers

Drawing helper utilities for advanced shapes and effects.

Provides optimized drawing functions for complex shapes that aren't covered by the basic canvas primitives.

Namespace: enjin2::DrawingHelpers

Header: include/enjin2/utils/drawing_helpers.hpp

Functions​

void drawCircleStroke(ICanvas< uint8_t > &canvas, int16_t x0, int16_t y0, int16_t radius, uint8_t color, uint8_t strokeWidth)​

Draw a circle with a stroke of specified width (matches original Enjin)

canvasThe canvas to draw on x0The x-coordinate of the center of the circle y0The y-coordinate of the center of the circle radiusThe radius of the circle colorThe color of the stroke strokeWidthThe width of the stroke (will be rounded down to nearest odd number)

void drawArcStroke(ICanvas< uint8_t > &canvas, int16_t x0, int16_t y0, int16_t radius, float startAngle, float endAngle, uint8_t color, uint8_t strokeWidth)​

Draw an arc with stroke.

canvasThe canvas to draw on x0Center X coordinate y0Center Y coordinate radiusArc radius startAngleStart angle in radians endAngleEnd angle in radians colorStroke color strokeWidthStroke width

void drawPolygon(ICanvas< uint8_t > &canvas, const Point *points, uint8_t numPoints, uint8_t color, bool filled=false)​

Draw a polygon from a set of points.

canvasThe canvas to draw on pointsArray of points defining the polygon numPointsNumber of points in the array colorLine color filledWhether to fill the polygon

void drawRoundedRect(ICanvas< uint8_t > &canvas, int16_t x, int16_t y, uint16_t width, uint16_t height, uint8_t radius, uint8_t color, bool filled=false)​

Draw a rounded rectangle.

canvasThe canvas to draw on xX coordinate of top-left corner yY coordinate of top-left corner widthRectangle width heightRectangle height radiusCorner radius colorDraw color filledWhether to fill the rectangle

void drawThickLine(ICanvas< uint8_t > &canvas, int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint8_t color, uint8_t thickness)​

Draw a thick line with rounded end caps.

canvasThe canvas to draw on x0Start X coordinate y0Start Y coordinate x1End X coordinate y1End Y coordinate colorLine color thicknessLine thickness

void drawBezierCurve(ICanvas< uint8_t > &canvas, int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, int16_t x3, int16_t y3, uint8_t color, uint8_t segments=20)​

Draw a bezier curve.

canvasThe canvas to draw on x0Start point X y0Start point Y x1Control point 1 X y1Control point 1 Y x2Control point 2 X y2Control point 2 Y x3End point X y3End point Y colorLine color segmentsNumber of line segments to approximate the curve

void drawStar(ICanvas< uint8_t > &canvas, int16_t centerX, int16_t centerY, uint8_t outerRadius, uint8_t innerRadius, uint8_t numPoints, uint8_t color, bool filled=false)​

Draw a star shape.

canvasThe canvas to draw on centerXCenter X coordinate centerYCenter Y coordinate outerRadiusOuter radius of star points innerRadiusInner radius between points numPointsNumber of star points colorDraw color filledWhether to fill the star