com.atakmap.android.imagecapture

Class CanvasHelper

java.lang.Object

com.atakmap.android.imagecapture.CanvasHelper

public class CanvasHelper
extends java.lang.Object

Canvas/path drawing functions

Constructor Summary

Constructors

Constructor and Description
CanvasHelper()

Method Summary

Modifier and Type	Method and Description
static float	angleTo(android.graphics.PointF start, android.graphics.PointF end)
static void	buildArrow(android.graphics.Path path, android.graphics.PointF source, float deg, float len, float tipLen, float tipDeg)
static void	buildArrow(android.graphics.Path path, android.graphics.PointF tail, android.graphics.PointF head, float tipLen, float tipDeg) Setup an arrow on a path
static void	clampToLine(android.graphics.PointF p, android.graphics.PointF... l)
static double	deg360(double deg)
static float	degCos(double deg)
static android.graphics.PointF	degOffset(double deg, float len)
static android.graphics.PointF	degOffset(double deg, float xLen, float yLen)
static android.graphics.PointF	degOffset(android.graphics.PointF start, double deg, float len)
static android.graphics.PointF	degOffset(android.graphics.PointF start, double deg, float xLen, float yLen)
static float	degSin(double deg)
static void	drawPathBorder(android.graphics.Canvas can, android.graphics.Path path, float weight, android.graphics.Paint paint)
static void	drawPathBorder(android.graphics.Canvas can, android.graphics.Path path, float weight, android.graphics.Paint paint, int borderColor)
static void	drawRectBorder(android.graphics.Canvas can, android.graphics.Paint paint, float weight, android.graphics.RectF rect)
static void	drawRectBorder(android.graphics.Canvas can, android.graphics.Paint paint, float weight, android.graphics.RectF rect, int borderColor)
static void	drawTextBorder(android.graphics.Canvas can, java.lang.String text, float x, float y, float weight, android.graphics.Paint textPaint)
static void	drawTextBorder(android.graphics.Canvas can, java.lang.String text, float x, float y, float weight, android.graphics.Paint textPaint, int borderColor)
static java.util.List<android.graphics.PointF>	findIntersectionPoints(android.graphics.RectF r, android.graphics.PointF sp, android.graphics.PointF ep) Provides the top and the bottom most intersection points on a line clipped with a rectangle
static boolean	intersecting(CapturePP cap, android.graphics.PointF[] line) Return true if the capture canvas and the line intersect.
static float	length(android.graphics.PointF... points)
static void	lineToOffset(android.graphics.Path path, android.graphics.PointF origin, float deg, float len)
static void	lineToPoint(android.graphics.Path path, android.graphics.PointF p1, android.graphics.PointF p2)
static void	rLineToAng(android.graphics.Path path, float x, float y, float deg, float len)
static float	validate(float num, float fallback)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CanvasHelper

public CanvasHelper()

Method Detail

drawRectBorder

public static void drawRectBorder(android.graphics.Canvas can,
                                  android.graphics.Paint paint,
                                  float weight,
                                  android.graphics.RectF rect,
                                  int borderColor)

drawRectBorder

public static void drawRectBorder(android.graphics.Canvas can,
                                  android.graphics.Paint paint,
                                  float weight,
                                  android.graphics.RectF rect)

drawPathBorder

public static void drawPathBorder(android.graphics.Canvas can,
                                  android.graphics.Path path,
                                  float weight,
                                  android.graphics.Paint paint,
                                  int borderColor)

drawPathBorder

public static void drawPathBorder(android.graphics.Canvas can,
                                  android.graphics.Path path,
                                  float weight,
                                  android.graphics.Paint paint)

drawTextBorder

public static void drawTextBorder(android.graphics.Canvas can,
                                  java.lang.String text,
                                  float x,
                                  float y,
                                  float weight,
                                  android.graphics.Paint textPaint,
                                  int borderColor)

drawTextBorder

public static void drawTextBorder(android.graphics.Canvas can,
                                  java.lang.String text,
                                  float x,
                                  float y,
                                  float weight,
                                  android.graphics.Paint textPaint)

buildArrow

public static void buildArrow(android.graphics.Path path,
                              android.graphics.PointF tail,
                              android.graphics.PointF head,
                              float tipLen,
                              float tipDeg)

Setup an arrow on a path

Parameters:

path - Path to use

tail - Arrow tail position

head - Arrow head position

tipLen - Tip/head length

buildArrow

public static void buildArrow(android.graphics.Path path,
                              android.graphics.PointF source,
                              float deg,
                              float len,
                              float tipLen,
                              float tipDeg)

rLineToAng

public static void rLineToAng(android.graphics.Path path,
                              float x,
                              float y,
                              float deg,
                              float len)

lineToOffset

public static void lineToOffset(android.graphics.Path path,
                                android.graphics.PointF origin,
                                float deg,
                                float len)

lineToPoint

public static void lineToPoint(android.graphics.Path path,
                               android.graphics.PointF p1,
                               android.graphics.PointF p2)

degCos

public static float degCos(double deg)

degSin

public static float degSin(double deg)

degOffset

public static android.graphics.PointF degOffset(double deg,
                                                float xLen,
                                                float yLen)

degOffset

public static android.graphics.PointF degOffset(double deg,
                                                float len)

degOffset

public static android.graphics.PointF degOffset(android.graphics.PointF start,
                                                double deg,
                                                float xLen,
                                                float yLen)

degOffset

public static android.graphics.PointF degOffset(android.graphics.PointF start,
                                                double deg,
                                                float len)

angleTo

public static float angleTo(android.graphics.PointF start,
                            android.graphics.PointF end)

length

public static float length(android.graphics.PointF... points)

intersecting

public static boolean intersecting(CapturePP cap,
                                   android.graphics.PointF[] line)

Return true if the capture canvas and the line intersect.

Parameters:

cap - the capture canvas

line - the line

Returns:

true if they intersect.

clampToLine

public static void clampToLine(android.graphics.PointF p,
                               android.graphics.PointF... l)

validate

public static float validate(float num,
                             float fallback)

deg360

public static double deg360(double deg)

findIntersectionPoints

public static java.util.List<android.graphics.PointF> findIntersectionPoints(android.graphics.RectF r,
                                                                             android.graphics.PointF sp,
                                                                             android.graphics.PointF ep)

Provides the top and the bottom most intersection points on a line clipped with a rectangle

Parameters:

r - The rectangle to clip the line to

sp - The start point on the line segment

ep - The end point on the line segment