diff options
Diffstat (limited to 'html/en/func/polygon.html')
| -rw-r--r-- | html/en/func/polygon.html | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/html/en/func/polygon.html b/html/en/func/polygon.html index 3a0b9c0..c2acb9a 100644 --- a/html/en/func/polygon.html +++ b/html/en/func/polygon.html @@ -93,42 +93,43 @@ canvas:PathSet(action: number) [in Lua]</pre> <p>Configures the action between sequences of <strong>cdCanvasVertex</strong>. <strong>action</strong> can be:</p> <ul> - <li> CD_PATH_NEW - creates a new empty path. Useful if more than one + <li> <strong>CD_PATH_NEW</strong> - creates a new empty path. Useful if more than one path is configured. <strong>cdCanvasBegin</strong>(CD_PATH) already creates a new path.</li> - <li>CD_PATH_MOVETO - moves the current position to the given coordinates. + <li><strong>CD_PATH_MOVETO</strong> - moves the current position to the given coordinates. Must be followed by 1 call to <strong>cdCanvasVertex</strong>, <strong> cdfCanvasVertex</strong>, or <strong>wdCanvasVertex</strong>.</li> - <li>CD_PATH_LINETO - adds a line to the path from the current position to + <li><strong>CD_PATH_LINETO</strong> - adds a line to the path from the current position to the given coordinates. The current position is updated to the given coordinates. If there is no current position, nothing is connected and only the current position is updated. Must be followed by 1 call to <strong> cdCanvasVertex</strong>, <strong>cdfCanvasVertex</strong>, or <strong> wdCanvasVertex</strong>.</li> - <li>CD_PATH_ARC - adds an arc to the path. If there is a current position + <li><strong>CD_PATH_ARC</strong> - adds an arc to the path. If there is a current position adds also a line from the current position to the start of the arc. The end of the arc becomes the current position. Must be followed by 3 calls to <strong>cdCanvasVertex</strong>, <strong>cdfCanvasVertex</strong>, or <strong>wdCanvasVertex</strong>. One for the center of the arc (xc,yc), one for the bounding rectangle size (w,h), and one for the start and end angles - (angle1,angle2). Angles are in degrees. When using integer coordinates + (angle1,angle2). Angles are in degrees and oriented counter-clockwise, but + angle2 can be smaller than angle1 to describe a clockwise arc. When using integer coordinates angles must be multiplied by 1000.</li> - <li>CD_PATH_CURVETO - adds a bezier curve to the path. If there is no + <li><strong>CD_PATH_CURVETO</strong> - adds a bezier curve to the path. If there is no current position, the first point will be used twice. The end point becomes the current position. Must be followed by 3 calls to <strong>cdCanvasVertex</strong>, <strong>cdfCanvasVertex</strong>, or <strong>wdCanvasVertex</strong>. Must be first control point (x1,y1) + second control point (x2,y2) + end point (x3,y3).</li> - <li>CD_PATH_CLOSE - adds a line to the path that connects the last point + <li><strong>CD_PATH_CLOSE</strong> - adds a line to the path that connects the last point with the first point of the path, closing it.</li> - <li>CD_PATH_FILL - fills the path with the current fill attributes, + <li><strong>CD_PATH_FILL</strong> - fills the path with the current fill attributes, then the path is discarded.</li> - <li>CD_PATH_STROKE - strokes the path with the current line attributes, then the + <li><strong>CD_PATH_STROKE</strong> - strokes the path with the current line attributes, then the path is discarded.</li> - <li>CD_PATH_FILLSTROKE - fills the path with the current fill + <li><strong>CD_PATH_FILLSTROKE</strong> - fills the path with the current fill attributes, strokes the path with the current line attributes, then the path is discarded.</li> - <li>CD_PATH_CLIP - use the path as a clipping area to be + <li><strong>CD_PATH_CLIP</strong> - use the path as a clipping area to be intersected with the current clipping area, then the path is discarded.</li> </ul> @@ -139,6 +140,14 @@ cdCanvasPathSet(canvas, CD_PATH_MOVETO); cdCanvasVertex(canvas, x1, y1); cdCanvasPathSet(canvas, CD_PATH_LINETO); cdCanvasVertex(canvas, x2, y2); +cdCanvasPathSet(canvas, CD_PATH_CURVETO); +cdCanvasVertex(canvas, x3, y3); /* control point for start point */ +cdCanvasVertex(canvas, x4, y4); /* control point for end point */ +cdCanvasVertex(canvas, x5, y5); /* end point */ +cdCanvasPathSet(canvas, CD_PATH_ARC); +cdCanvasVertex(canvas, x6, y6); /* center */ +cdCanvasVertex(canvas, x7, y7); /* width, height */ +cdCanvasVertex(canvas, x8, y8); /* start angle, end angle (degrees / 1000) */ cdCanvasPathSet(canvas, CD_PATH_STROKE); cdCanvasEnd(canvas);</pre> |