Okay I had re-written some of this
onDraw just handles drawing and canvas operations, ONLY
lines is a Vector Vector<line> lines;
@Override
protected void onDraw(Canvas canvas) {
canvas.drawBitmap(mBitmap , matrix , mPaint);
String result;
if (lines != null) {
for (int count = 0; count < lines.size(); count++ ) {
mPaint.setColor(Color.BLUE);
canvas.drawLine( lines.get(count).getStart().x ,
lines.get(count).getStart().y , lines.get(count).getStop().x ,
lines.get(count).getStop().y , mPaint);
result = "";
result = String.format("%4.3f mm", lines.get(count).getDistance() /
factor );
canvas.drawText( result , lines.get(count).getMidPt().x ,
lines.get(count).getMidPt().y , mPaint);
}
}
}
Now the TOUCH_UP calls touch_end so say I have finished finding the point.
private void touch_end(float x, float y) {
((ViewGroup) super.getParent()).removeView(pointer);
if (touch_counter == 1) {
pointA = new PointF();
pointA.x = ((x - 32.0f));
pointA.y = ((y - 70.0f));
} else if (touch_counter == 2) {
pointB = new PointF();
pointB.x = ((x - 32.0f));
pointB.y = ((y - 70.0f));
}
if (touch_counter == 2 ) {
line newLine = new line();
newLine.setStart(pointA);
newLine.setStop(pointB);
lines.add(newLine);
invalidate();
pointA = null; pointB = null;
pointC = null; newLine = null;
touch_counter = 0;
}
}
Progress ! ! that is now draws the line and writes the measurement.
But when I zoom in the line stays where it was and does not zoom with the
whole image ??
how can I make the line adjust with the zoom of the image ??
Thanks in advance
On Jun 27, 2011, at 10:11 PM, Miguel Morales wrote:
> Hmm, doesn't look like you are.
>
> Try drawing on the bitmap itself and then set that for the ImageView.
> See:
> http://developer.android.com/reference/android/graphics/Canvas.html#Canvas(android.graphics.Bitmap)
>
> On Mon, Jun 27, 2011 at 6:00 PM, New Developer <[email protected]> wrote:
>> within the function that has the drawline
>> I first call super.draw()
>> super.onDraw(canvas);
>> layers[0] = new BitmapDrawable( mBitmap );
>> //canvas.save();
>> mPaint.setColor(Color.BLUE);
>> canvas.drawLine(pointA.x, pointA.y, pointB.x, pointB.y, mPaint);
>> canvas.drawText( result, ((newline.getDistance() * line.PX_TO_MM) / 3.0f),
>> -6.0f, mPaint);
>> //canvas.restore();
>> super.setImageDrawable(layers[0]);
>>
>> So I "Think" I am drawing first is there anyway to check or verify this ??
>> Thanks again
>>
>>
>> On Jun 27, 2011, at 4:03 PM, Miguel Morales wrote:
>>
>> Make sure you are drawing your line after you draw your image
>>
>> On Mon, Jun 27, 2011 at 12:57 PM, New Developer <[email protected]> wrote:
>>
>> I'm using the following type of code to do panning and zooming on my own
>>
>> extension of an ImageView
>>
>> setBackgroundColor(Color.BLACK);
>>
>> matrix.postScale(newfactor , newfactor , mid.x , mid.y);
>>
>> setImageMatrix(matrix);
>>
>> Now I want to be able to draw lines on top of this image = = matrix
>>
>> currently I'm using
>>
>> mPaint.setColor(Color.BLUE);
>>
>> canvas.drawLine(pointA.x, pointA.y, pointB.x, pointB.y, mPaint);
>>
>> However this won't show up,
>>
>> so my question is How can I draw a line to the matrix variable used for
>>
>> zooming and panning ?
>>
>> Also I'm looking for tutorials on LayerDrawable if you know of any
>>
>> Thanks in advance
>>
>>
>>
>>
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>> ~ Jeremiah:9:23-24
>> Android 2D MMORPG:
>> http://solrpg.com/, http://www.youtube.com/user/revoltingx
>>
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>
>
> --
> ~ Jeremiah:9:23-24
> Android 2D MMORPG: http://solrpg.com/, http://www.youtube.com/user/revoltingx
>
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