io.scanbot.sdk.util.view

Class PolygonHelper

io.scanbot.sdk.util.view.PolygonHelper

public class PolygonHelper

Helper to make it easier to draw polygon on view

Method Detail

checkPolygonSize

public static boolean checkPolygonSize(java.util.List<android.graphics.Point> polygon)

Parameters:

polygon -

Returns:

org.jetbrains.dokka.NodeRenderContent@9a330a3: true if polygon edges sizes less than PolygonHelper#MIN_EDGE_LENGTH_PX, false - otherwise

setRotation

public void setRotation(int degrees)

Set rotation in degrees for polygon

Parameters:

degrees - usually camera rotation angle is used here

setImageSize

public void setImageSize(int width,
                         int height)

Set scaled image size that will be drawn on screen

Parameters:

width -

height -

setLayout

public void setLayout(int left,
                      int top,
                      int right,
                      int bottom)

Sets layout of surface inside parent to compensate differences between viewport and preview sizes and draw polygon correctly

Parameters:

left -

top -

right -

bottom -

polygonToLinePoints

public void polygonToLinePoints(java.util.List<android.graphics.PointF> polygon,
                                kotlin.Array[] points)

Calculates lines points from polygon multiplying 0..1 values by view dimensions and applying rotation matrix. Usually used on preview as it has camera rotation

Parameters:

polygon -

points -

polygonToPoints

public void polygonToPoints(java.util.List<android.graphics.PointF> polygon,
                            kotlin.Array[] points)

Calculates points from polygon multiplying 0..1 values by view dimensions and applying rotation matrix. Usually used on preview as it has camera rotation

Parameters:

polygon -

points -

getDrawingPolygon

public void getDrawingPolygon(java.util.List<android.graphics.PointF> polygon,
                              java.util.List<android.graphics.PointF> drawingPolygon)

Processes original polygon with coordinates 0..1 to drawing polygon by multiplying them by view dimensions

Parameters:

polygon -

drawingPolygon -

getPolygonFromDrawingPolygon

public void getPolygonFromDrawingPolygon(java.util.List<android.graphics.PointF> drawingPolygon,
                                         java.util.List<android.graphics.PointF> polygon)

Processes drawing polygon coordinates to polygon with coordinates 0..1 by dividing them by view dimensions

Parameters:

drawingPolygon -

polygon -

scaleLines

public java.util.List<io.scanbot.sdk.core.contourdetector.Line2D> scaleLines(java.util.List<io.scanbot.sdk.core.contourdetector.Line2D> lines)

Performs scaling from 0..1 values to image pixel values

Parameters:

lines -