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I'm not sure if this is the proper section, but....
I'm working on a project right now where i need PNG support for texturing our models and i heard from many sources that libpng was the way to go for it. However, I don't have much experience with libraries and have never installed one and am completely lost right now.
I have read through most of the .txt files included with it and still don't know what to do, I've tried building the zlib and libpng projects but they tell me there are .h files missing that need to be there.
I have no idea what a makefile is which another part tells me I can try (I tried running some of the files in the scripts folder where the makefiles are located, but they just crash).
I downloaded the .zip file for it from : http://www.libpng.org/pub/png/libpng.html
Any help would be appreciated.
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make sure your IDE or your project points to the include directory of any add-on library. We use both libpng, and zlib and others. When you get into the habit of using 3rd party libraries you will get into the habit of adding to your include list.
I prefer adding the libraries to the project rather than the IDE since it gets ported with the project rather than having to set up everything all over again each computer.
_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
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Thanks for the reply, I forgot to come here and tell people I finally got it working with the help of one of my professors yesterday afternoon (april 30th). Sorry about that...
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so expedite
I use openGl + visual 6.
how I can carve part from ground then throwing away by the hand of car?can you help me about it by code?and I need it in this 2day
this is my code that I mean ..you can copy&paste to see what I mean.
#include <windows.h>
#include <gl\gl.h>
#include <gl\glu.h>
#include <gl\glut.h>
#include <math.h>
#include <stdlib.h>
int x=1,y=1;
float tranx=0;
float trany=0;
void init (void)
{
glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);
gluOrtho2D (-200.0, 200.0, -200.0,200.0);
}
void forklift (void)
{
glClear (GL_COLOR_BUFFER_BIT);
glPushMatrix();
x-=1;
y-=1;
/////////////sunset//////////////////
glTranslatef(x,y,0);
glClear (GL_COLOR_BUFFER_BIT);
glColor3f(1.0,0.0,0.0);
glBegin(GL_POLYGON);
{ int tran,x2=50,y2=50,r=50;
for (tran= 1000 ; tran<=10000; tran++)
glVertex2f(x2 + sin(tran) * r, y2 + cos(tran) * r);
}
glEnd ();
glPopMatrix();
glPushMatrix();
/////////////circle//////////////////
glColor3f(1,0,1);
glTranslatef(tranx,1,0);
glBegin(GL_POLYGON);
{ int tran,x2=-20,y2=-30,r=10;
for (tran= 0 ; tran<= 360 ; tran++)
glVertex2f(x2 + sin(tran) * r, y2 + cos(tran) * r);
}
glEnd ();
glColor3f(1,0,1);
glBegin(GL_POLYGON);
{ int tran,x2=20,y2=-30,r=10;
for (tran= 0 ; tran<= 360 ; tran++)
glVertex2f(x2 + sin(tran) * r, y2 + cos(tran) * r);
}
glEnd ();
////////////////////////car1 ///////////////////////////
glColor3f(0,0,6.6);
glBegin(GL_POLYGON);
glVertex2i(-40,-20);
glVertex2i(40,-20);
glVertex2i(40,20);
glVertex2i(-40,20);
glEnd();
///////////// high of car ////////////////////
glColor3f(0,1,1.6);
glBegin(GL_POLYGON);
glVertex2i(-40,20);
glVertex2i(20,20);
glVertex2i(20,20);
glVertex2i(-20,40);
glEnd();
//////////// hand /////////////
glRotatef(trany,0,0,0.5);
glLineWidth(6);
glBegin(GL_LINE_STRIP);
glVertex2i(20,20);
glVertex2i(30,80);
glVertex2i(90,10 );
glVertex2i(100,10);
glEnd();
if(tranx<1000&&tranx>30)
{ if(trany>-50&&trany<200){
glClearColor (0.0, 0.0, 0.0, 0.);
trany-=.01;
}
else
trany+=100;}
else
{ glClearColor (1.16, 7.0, 0.0, 0.0);
tranx+=.01;
}
///////////////////////////////
glPopMatrix();
///////////////// arith*////////////////////
glColor3f(0,9,0.06);
glBegin(GL_POLYGON);
glVertex2i(200,-200);
glVertex2i(200,-40);
glVertex2i(-200,-40);
glVertex2i(-200,-200);
glEnd();
glutSwapBuffers();
}
void main(int argc, char **argv)
{
glutInit(&argc,argv);
glMatrixMode(GL_PROJECTION);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowPosition(100,100);
glutInitWindowSize(500,500);
glutCreateWindow("*miss looole*");
glutDisplayFunc(forklift);
glutIdleFunc(forklift);
glMatrixMode(GL_PROJECTION);
glMatrixMode(GL_MODELVIEW);
init();
glutMainLoop();
}
-- modified at 12:18 Saturday 28th April, 2007
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hi..plz i need to know a presice definition about Dihedral angel or reference's name talks about that angel regards
miss maria
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Even spelling it 'angel' instead of 'angle', google gave me the definition in seconds.
http://en.wikipedia.org/wiki/Dihedral_angle[^]
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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Thanx alot for that website..im Ph.D student i was need info. about that angel..! sorry angle ...angel and angle share something is that: both, they have wings .. thanx again .... Petrovna
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Miss_ petrovna wrote: im Ph.D student...
I'm not sure you should be openly admitting this.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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hi..U can b sure that im admitted what u wrote openly ..
if u read my question(of subject:help) u'll discover that im simple person..my question was very simple compared to my study..but im always like asking people around me..& im glad 2 give answer about any question asked to me ..
second sentence its very nice. Petrovna
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helloo brothers..my program like paint (drawing lines,ellipse,...) the problem that i cant zooooming ..so plz what should i do...
note : iam using v.s (2003)..
Regards;
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Try using the Scaling Transformation on the Graphics object. You can reference the method like this: g.ScaleTransform(2.0f,3.0f)
Cheers!
Richard
may your code be error free
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i wanna to make aprogram that can draw (ellips , line,..) but i have problems with the save & open ..thats apart of the code:
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization;
namespace graphics_practis
{
///
/// Summary description for Form1.
///
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Panel panel1;
private System.Windows.Forms.PictureBox pictureBox1;
private System.Windows.Forms.Button line;
private System.Windows.Forms.Button square;
private System.Windows.Forms.Button circle;
private System.Windows.Forms.Button ellipse;
private System.Windows.Forms.Button polygon;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button ok;
private System.Windows.Forms.MainMenu mainMenu1;
private System.Windows.Forms.MenuItem menuItem1;
private System.Windows.Forms.MenuItem menuItem2;
private System.Windows.Forms.MenuItem menuItem3;
private System.Windows.Forms.MenuItem menuItem4;
private System.Windows.Forms.MenuItem menuItem5;
private BinaryFormatter formtter = new BinaryFormatter();
private FileStream str_reader;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.SaveFileDialog saveFileDialog1;
private System.Windows.Forms.OpenFileDialog openFileDialog1;
///
/// Required designer variable.
///
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
dr = new draw(this.pictureBox1);
}
static void Main()
{
Application.Run(new Form1());
}
private void menuItem4_Click(object sender, System.EventArgs e)
{
//saving
FileStream outStream=File.Create(saveFileDialog1.FileName);//To create text file
Stream streamWriter=new StreamWriter(outStream);
}
private void menuItem3_Click(object sender, System.EventArgs e)
{
//opening
FileStream outStream=File.Create(saveFileDialog1.FileName);//To create text file
StreamWriter streamWriter=new StreamWriter(outStream);
}
the error...>>(cannot implicity convert type 'System.IO.StreamWritet'to 'System.IO.Stream'.
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Seriously, stop this project and go pickup a book on beginning C#. You've got some serious "C# and .NET Framework 101" issues to contend with. Just getting something as simple as a StreamWriter to work is giving to fits. Actually doing some drawing is about 10 times more difficult.
Besides, how are you going to save you're image? Are you really going to try to write binary data to a text file??
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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Dave Kreskowiak :how are you going to save you're image? Are you really going to try to write binary data to a text file??..yes .
ok look bro i have changed my saving code and used StreamWriter but its doesnt write binary data to a text file !!!! so when i opened the file the program doesnt display and of my drwaing ( line,ellipse,...)
PLZZZZ..MR DAVE..SEND ME BACK AS SOON AS U CAN..!!
Regards;
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mr jets wrote: Are you really going to try to write binary data to a text file??..yes
Good luck with that!
BTW, the code you posted doesn't write ANYTHING to the file. All it does is open it. It doesn't even close the file when it's "done".
Seriously, you're missing a ton of basic knowledge you MUST have to build applications with.
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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thanks for ur effort mr Dave..god bless u bro..but remember i said iam TRYING to save the pic by entering binary data to text ..but i couldnt .. ..i just can creat atext but it doesnt recieve any values...
comone ..i need ur help mr Dave !!
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Well, I would start by never saving an image as a text file.
Next, have you looked as the Save[^] method on the Bitmap class.
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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iam so greatfull for ur help mr Dave ..who said i wanna to save image ..okie i just wanna to save my drawings in picturebox (lines,ellips,...) so i can display it again ..like the Paint..
iam waiting ur reply...
Regards ;
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If you can't get the Stream classes down, this is WAY over your head. Go back to the basics.
There's nothing that does this for you. You have to keep track of the mouse position, where the mouse buttons were held down and where it is now, drawing, calculating the circle, arc, whatever, drawing the new graphic to your bitmap, then updating the image displayed in the PictureBox, ...
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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my new save code is :
System.IO.FileStream fs = new System.IO.FileStream("c:\\testing.txt", System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.Write, System.IO.FileShare.ReadWrite);
// create a stream writer
System.IO.StreamWriter sw = new System.IO.StreamWriter(fs, System.Text.Encoding.ASCII);
// write to file (buffer), where textbox1 is your text box
sw.Write("text");
// flush buffer (so the text really goes into the file)
sw.Flush();
// close stream writer and file
sw.Close();
fs.Close();
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The Grand Negus wrote: That's how we do it.
Try asking me if I care, first.
Next, try opening your image format in any other "paint" application, like Photoshop. Good luck with your proprietary format. Once again, the rest of the world isn't good enough for you.
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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The Grand Negus wrote: Enough to reply, it seems!
You just do this so you can get off pushing people buttons.
The Grand Negus wrote: We support copy, paste, import, and export operations across "systems".
I said open the file itself, not do some work around to paste it in somewhere else.
The Grand Negus wrote: Well, you're right about that. Is there nothing you'd like to see improved?
Everything needs improving. I just don't go running around telling the planet about every little thing that irks me and dumping my solutions on them.
Enough said.
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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The Grand Negus wrote:
False.
True. You've left a healthy trail of evidence.
The Grand Negus wrote: seemed to think it was either impossible or impractical
Impossible - no. Impracticle, when the methods to save the image into industry standard formats already exist, most definitly, yes.
The Grand Negus wrote: It's not expected that every application should be able to open every other application's files.
Nope. Image files tend to be interchangable than most others though.
The Grand Negus wrote: Can you open a Word document in Paint Shop Pro?
Stay on topic. You know this is BS example.
The Grand Negus wrote: But why not?
Because I'm not a self-absorbed "I know better than you" schmuck like youself.
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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good morning ..every one !
ok..i wanna to make aprograme that can draw(ellipse,lines,..) but i have aproblems with saving & opening file ..my save code is:
FileStream outStream=File.Create(saveFileDialog1.FileName);//To create text file
StreamWriter streamWriter=new StreamWriter(outStream);
the error...>>(cannot implicity convert type 'System.IO.StreamWritet'to 'System.IO.Stream'.
plzz send me back...as fast as u can
Regards;
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What you need to do is convert your shapes into a binary format. You can the deserialize them back into the original shapes. Here's some code to try.
//Serialize the shapes before saving
FileStream fs = File.Create(strFileName);
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(fs, myArray);
fs.Close();
//Deserialize the saved shapes
FileStream fs = File.Open(strFileName, FileMode.Open);
BinaryFormatter bf = new BinaryFormatter();
myArray = (ArrayList)bf.Deserialize(fs, null);
fs.Close();
Cheers!
Richard
may your code be error free
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