[Playing with Leadwerks and a Kinect]

ok, now i started to look for alternatives.

 

a web camera and face recognition with opencv

 

 

[Playing with Leadwerks and a Kinect]

Now I activated the color camera and getting the color information, copying it to a texture and drawing on the screen (up left) so there I'm!

 

Using multiple buffers and a shader to draw clipped parts of them on the screen, increased fps from 15 to 30 even with getting color kinect camera and copying it (by hand: pixel by pixel) to a leadwerks texture .

 

 

video:

 

 

 

Also I'm tracking Head, Shoulders, center of shoulders and center of body. A circle is drawn (more or less in the correct place) on each of the tracked joints if kinect report it as detected.

 

The program moves the "player" camera which is at the central "window" of the screen and the intention is to show in a window what a player actually has to see if he were watching the 3d world through that window.

 

Movement is followed correctly except at the last part of the video in which i place my hands in front of my face... so gets hard for the kinect to track me. As you can see, circles appear and disappear and when this happens, the camera control isn't correct.

 

 

Juan

[SetRenderTarget (to texture) strange behavior?]

thank's

 

aside of another problems i have... now is working if and only if the boxes that has the textures are not hidden

 

if i hide a box, then it's texture isn't updated

 

based on the "intended behavior" (not so logical to me) sounds ok, because if the system do not update a texture of an object outside the view of the camera, then it will not render a texture of a hidden box.

 

the documentation refers that the texture "can" be used in a material and applied to an object, or draw on screen" i understand from that that "can" is not "must" (but my English is terrible).

 

any way, our language (english spanish etc) isn't so exact as computer languages so my problem is not with documentation, knowing what is possible to do and what isn't is what i need.

 

i was working with buffers, doing a world::render for each one and then getting the texture from the buffer, doing some handling on the texture (cropping it mostly) and then drawing each processed texture.

 

Started doing cropping by hand (memcpy) and reaching a 14 fps on my laptop

then as pointed by macklebee (thank's man) i starting to try a shader to do so

http://www.leadwerks.com/werkspace/topic/12537-drawing-a-section-of-a-2d-texture-setting-uv-coords/#entry90453

after some mistakes of mine (use to have lots) i make it work and fps rise up to 28

 

so, i starting to ask, what about render to a texture instead of render to a buffer...

well if i render to textures i'm having 12 fps (worse than using by hand texture copy, crop: handling) and i have to have in front of the camera boxes with those textures on it (not supposed to be)

 

probably i'm still doing something wrong, but for now i'll keep with buffers + shader

 

thank's for your help

 

Juan

[SetRenderTarget (to texture) strange behavior?]

I was trying to render to a texture without success.

Texture shows always the same no matter the camera position/rotation...

 

I roll back to the RenderToTexture Lua example, wrote it for cpp and works ok, then i realize that:

 

 

1) If the texture is not applied to a material then the rendered texture is what the camera sees when at it's starting position/rotation : 0,0,0 / 0,0,0

 

2) if the texture is applied to a material, and this material is applied to an object, the rendered texture is ok if the object is visible by the camera, if not, then the rendered texture is again what the camera sees on the default position.

 

The documentation says:

 

" The texture can be used in a material and applied to an object, or drawn onscreen. "

 

but if not applied to a material, it does not render, and if applied to a material then it mus be applied to an object visible by the camera.

 

following is a cpp to test, with the commented lines (with //) the example do not work

if applied to the box works ok until you uncomment the line that moves it outside the view range of the camera.

 

perhaps this is the intended behavior and i am missing something obvious.

 

What I need is to render to a texture with the intention of draw it with context->DrawImage. I do no plan to place a visible object with the texture in front of the camera.

 

is it possible to render to a texture without applying it to an object with a materila with it?

 

thank's in advance

 

 

Juan

 

#include "App.h"
using namespace Leadwerks;
App::App() : window(NULL), context(NULL), world(NULL), camera(NULL) {}
App::~App() { delete world; delete window; }
Model* model = NULL;
Camera* camera2;
Pivot* pivot;
Material* mtl;
Texture* tex;

bool App::Start()
{
window = Window::Create("render to textue",0,0,1024,768);
context = Context::Create(window);
world = World::Create();
camera = Camera::Create();
camera->Move(0, 0, -3);
Map::Load("Maps/start.map");
Light* light = DirectionalLight::Create();
light->SetRotation(35, 35, 0);
camera2 = Camera::Create();
camera2->Move(0, 0, -4);
camera2->SetClearColor(1, 0, 0);

pivot = Pivot::Create();
camera2->SetParent(pivot);
pivot->SetPosition(-2, 2, 1);
tex = Texture::Create(256, 512);
mtl = Material::Create();
mtl->SetShader("Shaders/Model/Diffuse.shader");
mtl->SetTexture(tex);
camera2->SetRenderTarget(tex);
model = Model::Box();
//model->SetPosition(0, -4, 0); //if not visible: render texture gets freezed
//model->SetMaterial(mtl); //if material is not applied to a visible object render texture gets freezed
model = Model::Cylinder();
model->SetColor(0.0, 1.0, 0.0);
model->SetPosition(0, 0, 0);
model = Model::Cone();
model->SetColor(0.0, 0.0, 1.0);
model->SetPosition(2, 0, 0);
return true;
}
bool App::Loop()
{
if (window->Closed() || window->KeyDown(Key::Escape)) return false;
pivot->Turn(0, Time::GetSpeed(), 0);
Time::Update();
world->Update();
world->Render();
context->DrawImage(tex, 10, 10);
context->Sync();
return true;
}

[shooting simulator]

Hi, i'm working on a shooting simulator. Here are some screenshots. The graphics part of it isn't of too much interest at this stage I'm more concerned about the hardware interface with the guns.

 

Gun range:

 

 

6 feet under (more or less)

 

 

Out side

 

 

Testing the app with the mouse (not the intended input, but for ease)

 

https://drive.google.com/open?id=0B8-7vR0QcsPkaDBXRk5qUzc1Tkk

 

https://drive.google.com/open?id=0B8-7vR0QcsPkbG5hWFFPZHV6b3c

 

https://drive.google.com/open?id=0B8-7vR0QcsPkZlJxU0M1emhxeUE

 

Testing it with the real input hardware.

 

https://drive.google.com/open?id=0B8-7vR0QcsPkMlJLVENIRWRCZ0k

 

https://drive.google.com/open?id=0B8-7vR0QcsPkbmZGeGFPUHE1OW8

 

https://drive.google.com/open?id=0B8-7vR0QcsPkNXJ1QVNiNHl1c3M

 

https://drive.google.com/open?id=0B8-7vR0QcsPkMDRLaThmZDcwbDQ

 

https://drive.google.com/open?id=0B8-7vR0QcsPkcV8wbV94WkhpRDg

 

https://drive.google.com/open?id=0B8-7vR0QcsPkUlNVbTl1Y3dqYVU

 

Juan

[Spline tool: paths, roads and more]

nice

 

has you found a way of getting constant speed over the spline?

 

are you using some criteria for placing control points based on endpoints?

i mean, you only set the endpoints and then pre-calculate based on them the control points, then manually adjust the ones that need adjustment...hope you understand my question.

[Playing with Leadwerks and a Kinect]

thank's

 

i'm using the 360 SDK v1.8

 

the video was made with aproject that only loads a map and connects to the kinect, the other hawdware/software was not present.

 

the complete systems includes guns with a sensor on the trigger and a IR laser beam, and an IR camera to know where the gun's are heading...

 

gun:

https://photos.google.com/photo/AF1QipOqR9tke1JGI1CstXfA8BTUuf10rsGBG0BC0Tg

 

stuff

https://photos.google.com/photo/AF1QipMEaQRfJe9fK8v7AlRiUxERY5iUYLOiS2fVNec

 

test (no kinect still, no scene at all either!)

https://photos.google.com/photo/AF1QipPydG6AouTsLWBA1gi2UcZio6ym1MF2tl364wU

[Playing with Leadwerks and a Kinect]

Hi, i'm doing some test with a kinect, the idea is to follow player's position (head tracking) and project on a screen (not laptop or pc screen/monitor) 5 meters away from the player a "window" through which we see the 3D world. Each player has it's own line of sight and a "window" to look throug.

 

First test are nice

 

 

 

 

(ok, are not the first tests.. this is the first that look promising!)

 

 

Juan

[copy an image/texture rectangle command?]

quite interesting! thank's i'll give it a try.. for a while

[copy an image/texture rectangle command?]

is there a simple way of copying a sub part of an image/texture to other image/texture.

 

i mean, instead of getting the pixel data and copying pixel by pixel with a couple of nested for/next loops?

 

has leadwers a copyrect o drawrect command?

 

 

 

 

Juan

[Lua script editor (Scintilla)]

The ctrl-arrow thing drives me nuts! That's my primary means of navigation and it gets me every single day

 

totally agree, i'm just fan of crtl left/right, auto indentation and many other helper thing's we usually has on editors

 

(i came from the Ctrl+K+AnotherNiceKey era!, when a mouse simply were a strange thing)

[leadwerks editor do not maximize if minimized before laptop goes sleep]

don't know it it's a bug, but this afternoon happens to me that i minimized the leadwerks editor, left the laptop alone for a while and it goes to sleep. After wake up, i couldn't maximize the editor. I close and start again and i goes minimized.

 

i take a look at the .cfg file and found the "MainWindowShape" parameter with this:

 

MainWindowShape="-25600","-25600","136","47","0"

 

i look on other .cfg files posted here and simply replace this line for something like

 

MainWindowShape="236","27","1186","768","0"

 

and start leadwerks again and looking as spected.

 

i simply report this issue, and a solution i found.

 

Juan

[Record Camera/Object Path Movement Script]

great!

 

thank's for sharing

 

just a small note (happens to me :

 

in:

function Script:Record_Mode_Toggle()

 

FileSystem:WriteFile retutn null if lua sandboxing is enabled

a check for a null and an advice would be nice

 

Juan

[Drawing health bars]

the "someValue" should be dependent of the distance from the player and the camera, probably the angle (camera x angle) and naturally the camera FOV

[Drawing health bars]

if you want the bar over the head in 2d space

project the head, and then use the 2D x axis as the center of the bar, and use the 2D Y axis minus some value to rise up (in 2D space) the bar. isn't it?

 

[Accessing objects in editor from C++ code]

hi, here there are some notes i wrote about c++ lua bindings

 

http://www.leadwerks.com/werkspace/blog/183/entry-1612-lua-cpp-bindings-how-to-tutorial-17/

 

 

once yo compile your c++ code, that one is used from the Leadwearks editor when you press paly/debug on the editor.

[Who are you?]

Hi, My name is Juan Ignacio Odriozola, from Uruguay, a little country between Brasil and Argentina, south America.

 

With just 52 years old i'm a teacher and technician in electronics. I work for the phone company in Operation & Maintenance and as a Teacher in a couple of institutes (ORT university and a Militar Institute on courses about microcontrollers mainly)

 

I always love to interface the PC with other hardware beyond a keyboard, mouse and screen, so my projects all include some microcontrollers and use some high level programming language to show what's happen.

 

Some years ago, for one of my projects entered he 3D world, not for a game, but simply i couldn't leave it.

I started with Blitz3D and test other engines in between and ended here. Leadwerks has good support and community

 

Now i'm working on a shooting range, ok souds like a shoot them all game, but the idea is not shoot any thing that moves, is for fire practice and learn so, gun handling is evaluated as where the participant is hitting. I'm talking about real guns with sensors. Not keyboard, mouse and joystick.

 

It's under development in the firs stages and hope to has something nice to show... some time in the future.

 

Nice to meet you all

 

Juan Ignacio Odriozola

[Custom properties]

 

i tested the opposite, change a key in cpp and test it on lua side.. i realize how i forgot how to code in lua..

 

--simply to pass data to c++

Script.AnInt=0 --int "anInt"
Script.AString="Hola" --string "string"

function Script:Start()
 self.entity:SetKeyValue("anInt", self.AnInt)
 self.entity:SetKeyValue("aString", self.AString)
end

function Script:UpdateWorld()

 if self.entity:GetKeyValue("anInt") ~= self.AnInt then
   self.AnInt = self.entity:GetKeyValue("anInt")
   System:Print("AnInt changed: "..self.AnInt)
 end

end

 

and in cpp, after found "theEnt" (as i named the entity with this script attached) and storend on a Entity* pointer..

i delared a glogal int

 

int anInt=0;

 

in main loop:

 

somewhere:

if (window->KeyHit(Key::G)) {
 anInt++;
 theEnt->SetKeyValue("anInt", String(anInt));
}

[Custom properties]

found a script i used ... when testing set/get key value

 

its called EntData.lua

--simply to pass data to c++

Script.AnInt=5--int "anInt"
Script.AString="Hola"--string "string"

function Script:Start()
 self.entity:SetKeyValue("anInt", self.AnInt)
 self.entity:SetKeyValue("aString", self.AString)
end

 

if you attach this script to an entity in the editor, you may set the values you want and at startup, keys are asigned to the entity

i'm sure i used that to then read the keys from cpp side, i only found the lua side

 

other thing i used to use... just because name is safe, was use the "name" as a csv, with something like

name=theentty, customval1=34, customval2=hola, and so..

 

then whit a utiliti function like getNthCsvFromString(string s, int nth)

i get the "name" key and get the individual csv items with the previous function... i know that this kind of names are a mess, but

was what i used before knowing better ones

 

jio

[Custom properties]

this is from when?

last year i passed via keyvalues data from cpp to lua and back to cpp

using an entity as a placeholder.

 

this is not working at present?, i don't tested recently

[Custom properties]

but if you find the "block" entity, then GetKeyValue("name") is working.

 

"name" is a key already implemented, so it allways work, you have a textbox on the editor for the name.

 

if i'm not wrong, then the problem is with keys created by you, isn't it?

 

probably your problem is on the SetKeyValue command, which i suppose you are setting in the lua script.

[Custom properties]

where is world created?

 

if in lua, then cpp world should be empty (or NULL)

[Custom properties]

these both are very handy, or if you named the object properly then you can search it inside the world->Entities list

 

see:

http://www.leadwerks.com/werkspace/blog/183/entry-1613-lua-cpp-how-to-27/

[CEGUI, does someone uses it?, alternatives?]

thxs

 

agrror is back again!, i thought he stopped flowgui dev, seems that an update is coming

 

jio

[CEGUI, does someone uses it?, alternatives?]

Hi

 

As the subject says.

 

Last forum thread about cegui is about 5 years,

 

I spent last weekend without success.

 

i like to know if currently someone get it working with leadwerks and if it worth the effort.

 

 

I need a gui for leadwerks, so any advice about some other gui would be appreciated

I was testing awesomium but it´s just an interface for a html generated web page/form/dialog and so you have to start codign html, javascript... jquery, jquery UI...

i do like a gui that has a layout editor and/or create windows, controls etc, by code.

 

thank's in advance

 

jio