Posts by Sergey74

I have already written the core of the new plugin and will update Lensflare Free as well someday, but since this is just my hobby I can't guarantee any deadlines or quick fixes.

Quote from klaus.krpano

Hi,

here an example to extend krpano with a 'onlookchange' event that tracks only hlookat, vlookat and fov changes (could be extended with other view attributes too):

Code

<action type="js" autorun="onstart">

	var view = krpano.view;
	var attrs = ["hlookat", "vlookat", "fov"];
	var prevstate = {};
	
	attrs.forEach( function(attr){ prevstate[attr] = view[attr]; });

	krpano.events.addListener("onviewchanged", function()
	{
		var haschanged = false;
		
		attrs.forEach( function(attr)
		{
			if (prevstate[attr] != view[attr])
			{
				prevstate[attr] = view[attr];
				haschanged = true;
			}
		});
		
		if (haschanged)
		{
			krpano.events.dispatch("onlookchange");
		}
	});
	
</action>

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Best regards,
Klaus

Thank you Klaus!

Thanks guys! The new syntax is convenient. I want to write a plugin with support for older versions of krpano (1.21 and older). So I'll have to do it the old way

Is there any way to track changes directly to the view (hlookat, vlookat, fov, etc.) without using hacks? I couldn't think of anything other than tracking changes to each of them (hlookat, vlookat, fov, etc.)

Hi Klaus!

Changing hotspot.alpha via tweens in infinite animation causes infinite onviewchanged even if the view is not changing. This is due to WebGL rendering of hotspots. Please check why the engine reacts like this.

I have some code that uses the onviewchanged event and I'm finding that onviewchanged is firing infinitely even though the view is not changing.

Below I have provided a small test that points to the problem. Also I did not find any fundamental difference between onviewchanged and onviewchange in my tests, could you give some explanations. Yes, I read the documentation well.

<krpano version="1.22" onstart="showlog();">
		<style name="test_hotspot_style"
					 renderer="webgl"
					 blendmode="add"
					 url="hotspot.png"
					 enabled="false"
		/>
		<scene name="scene_test" title="Test Scene" onstart="blink();" autoload="true">
				<preview type="grid(cube,64,64,512,0x00FF00,0x000000,0x00FF00);" />
				<view hlookat="0.0" vlookat="0.0" fovtype="MFOV" fov="100" />
				<hotspot name="test_hotspot"
								 style="test_hotspot_style"
								 ath="0.0"
								 atv="0.0"
								 scale="1.0"
								 alpha="1.0"
								 bright="1.0"
				/>
		</scene>
		<events name="test_events" keep="true"
						onviewchanged="trace('onviewchanged triggered');"
		/>
		<action name="blink" scope="local">
				set(random_alpha, get(random));
				tween(hotspot[test_hotspot].alpha, get(random_alpha), 0.5, linear, blink();); <!-- alpha or scale or ... -->
		</action>
</krpano>

I don't know if it's a bug or a feature. It happened by chance, if you pass a value (rx, ry, rz) to a hotspot that is not a number, then it behaves like a layer. Example

<krpano>
	<preview type="grid(cube,64,64,512,0xCCCCCC,0x444444,0x999999);" />
	<view fov="100"/>
	<hotspot name="test" type="container" distorted="true" enabled="true" edge="leftbottom" width="500" height="500" bg="true" bgcolor="0x000000" bgalpha="0.5" bgborder="1 0x00FF00" bgbordermode="inside" bgborderblend="true" bgcapture="true" onclick="set(rx, NaN);"/>
</krpano>

Very cool Klaus!

P.S. Where are the monsters?

Hey! Not yet. Perhaps someday, but I just don't have time for this.

Oh yes, I confused hotspot and layer. Strange, but even event oresize does not work.

<events name="resize_hotspot" onresize="
    trace(stagewidth);
    trace(hotspot[test].width);
    set(hotspot[test].width,get(stagewidth));
    trace(hotspot[test].width);
    "/>

Do you want to make the hotspot width equal to the stagewidth? Just set the width to 100%

Quote from Tuur

Hi,

Sergey74
not sure what you mean.. can you explain or show?

Tuur

It didn't work out to do it smoothly, but I think you will understand what I mean

https://youtu.be/qk3KSZ-BCXo

Very good! I discovered an undocumented feature - Dolly Zoom. I wonder if this can be programmed?

Alternatively, place a textfield in a container

events

Hello! It's simple

<event name="test_event" onresize="print_log();" keep="true"/>

Hi Klaus!

Will it be possible to add control for mobile devices (for zoom in /
out): double touch + swipe up / down in a future version?

For example, as in this video https://youtu.be/ZLRGWudSpH0

It's not entirely clear what you mean

Quote

How to change view under hotspot

but study it, it might help. https://krpano.com/docu/actions/#loadscene

It's very easy! Open your tour.xml

<skin_settings maps="false"
               	...
               	design_bgcolor="0x2D3E50"
               	design_bgalpha="0.8"
               	design_bgborder="0"
               	design_bgroundedge="1"
               	design_bgshadow="0 4 10 0x000000 0.3"
               	design_thumbborder_bgborder="3 0xFFFFFF 1.0"
               	design_thumbborder_padding="2"
               	design_thumbborder_bgroundedge="0"
               	design_text_css="color:#FFFFFF; font-family:Arial;"
               	design_text_shadow="1"
               	/>

Nearly. For example

<image>
<cube url="panos/pano_01.tiles/%s/l%l/%v/l%l_%s_%v_%h.jpg" multires="512,1024,2048,3840" />
</image>

3840*PI(3.14)≈12000

In the Panini projection polygonal hotspots look wrong