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Primitives

Drawing primitives for geometric shapes.

TPixelPixel type (e.g., Pixel4, uint8_t)

Namespace: enjin2

Header: include/enjin2/graphics/primitives.hpp

Public Methods​

static void drawLine(ICanvas< TPixel > &canvas, int16_t x0, int16_t y0, int16_t x1, int16_t y1, TPixel color)​

Draw a line using Bresenham's algorithm.

canvasTarget canvas x0Starting X coordinate y0Starting Y coordinate x1Ending X coordinate y1Ending Y coordinate colorLine color

static void drawRect(ICanvas< TPixel > &canvas, const Rect &rect, TPixel color)​

Draw rectangle outline.

canvasTarget canvas rectRectangle bounds colorOutline color

static void fillRect(ICanvas< TPixel > &canvas, const Rect &rect, TPixel color)​

Fill a rectangle.

canvasTarget canvas rectRectangle bounds colorFill color

static void drawCircle(ICanvas< TPixel > &canvas, int16_t cx, int16_t cy, int16_t radius, TPixel color)​

Draw circle outline using midpoint algorithm.

canvasTarget canvas cxCenter X coordinate cyCenter Y coordinate radiusCircle radius colorOutline color

static void fillCircle(ICanvas< TPixel > &canvas, int16_t cx, int16_t cy, int16_t radius, TPixel color)​

Fill circle using scanline algorithm.

canvasTarget canvas cxCenter X coordinate cyCenter Y coordinate radiusCircle radius colorFill color

static void drawTriangle(ICanvas< TPixel > &canvas, int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, TPixel color)​

Draw triangle outline.

canvasTarget canvas x0First vertex X y0First vertex Y x1Second vertex X y1Second vertex Y x2Third vertex X y2Third vertex Y colorOutline color

static void fillTriangle(ICanvas< TPixel > &canvas, int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, TPixel color)​

Fill triangle using scanline algorithm.

canvasTarget canvas x0First vertex X y0First vertex Y x1Second vertex X y1Second vertex Y x2Third vertex X y2Third vertex Y colorFill color

static void drawEllipse(ICanvas< TPixel > &canvas, int16_t cx, int16_t cy, int16_t rx, int16_t ry, TPixel color)​

Draw ellipse using midpoint algorithm.

canvasTarget canvas cxCenter X coordinate cyCenter Y coordinate rxHorizontal radius ryVertical radius colorOutline color

static void drawArc(ICanvas< TPixel > &canvas, int16_t cx, int16_t cy, int16_t radius, float start_angle, float end_angle, TPixel color)​

Draw arc segment.

canvasTarget canvas cxCenter X coordinate cyCenter Y coordinate radiusArc radius start_angleStart angle in radians end_angleEnd angle in radians colorOutline color

static void drawPolygon(ICanvas< TPixel > &canvas, const Point *vertices, size_t vertex_count, TPixel color)​

Draw polygon outline.

canvasTarget canvas verticesArray of polygon vertices vertex_countNumber of vertices colorOutline color