Hi,
I am trying to figure out how to zoom relative to the mouse pointer position.
Below, please find my sample code. When I position the mouse pointer on one
corner of the red rectangle and use the mouse wheel, I am able to zoom in and
out as expected. As soon as I move the pointer position,
I am developing a CAD Engine Using Java Technology.
I need assistance of those peoples worked with Java
Graphics.
What i need is nothing but my programme could perform basic
drawings feature i.e. draw line, draw rectangle, circle
insert text and etc.
for this i need a bit assistance.
any
Hello experts:
Please help me for this.
I've install JAI package to my c:\ root and have added C:\jai-1_1_2_01\lib to
my CLASSPATH value. How do i use the JAIPlugIn class? do i add it to one of my
package then set it as my jai.class in my properties object? How do i start? Is
there step by
If I do this to get the pixels from an image for later rendering in a
MemoryImageSource my applet runs fine.
width = image.getWidth(canvas);
height = image.getHeight(canvas);
pixels = new int [width * height ];
int cnt = 0;
pg = new
When I run the applets from appletviewer I see 16 numbers printed on the
console for the BI version but only 8 printed for the PG version -
hopefully there isn't a typo causing the loads to be done twice?
...jim
Ken Warner wrote:
Hi Jim,
I'm not communicating the
I just thought of something. What is the alpha channel set to
when the BufferedImage is created and the databuffer is extracted?
If the alpha channel is 0, that would explain a lot. That means the
image is transparent. There's two stages of rendering. The first stage
only does nearest
The 3byte databuffer has no storage available for an alpha value.
When the data is loaded into the TYPE_INT_RGB BufferedImage there is no
alpha stored there since that is an opaque type. More specifically, if
you load one of the integers from the underlying int[] pixel array of
such an image
Whatever... The image was not being drawn because the alpha
channel was 0x00. Initializing the alpha channel to 0xff allowed
us to see the image. I don't have a lot of energy for a big discussion
about this.
But this whole experiment still leads me back to ask for a way to
decode an image
Hi Ken,
I'm sorry that you are having trouble understanding the newer imaging
APIs as they generally provide facilities that are quite flexible and
useful for writing the type of application that you are creating here.
The primary missing link would seem to be some documentation that would
I understand the newer imaging API's well enough to know they
are awkward and lacking in flexibility and utility.
I understand your responses well enough to know when I'm being sandbagged.
I understand that any request to do anything different from the Gold
Standard of Perfection that exists
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