C++ :: OpenGL - Outlining Functions Incorrectly When Used With Overlapping Objects
Oct 26, 2013
[URL] This program is creating an outline for each of the tall rectangular prisms that will eventually make up terrain in a game I am making. As you can see in the middle of the picture, the line is not fully connected, and it has smaller lines making up the bigger line like a dotted line. However, this only occurs when two objects overlap (in the part with the dotted lines, the two prisms are touching, as two of their vertices are the same).
How would I make the dotted line go a away and give me a solid line?
Here is my rendering code:
[spoiler]
glDepthFunc(GL_LESS);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glBegin(GL_QUADS);
[Code].....
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Sep 9, 2013
I am struggling with how to efficiently design my class objects to support the outlining of a collection of items. The collection would be sorted but would also have the ability to indent and outdent individual items representing a Parent and Child relationship (see attached).
An item could indent up to 5 levels deep. A summary level would be considered a Parent while items below the summary level would be consider as children.
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Jun 22, 2014
I'm having trouble understanding why after x.w is defined x.b[1] gets defined over top of it.
Leaving me with an output reading;
1d
1d3f
Rather than;
1d
1c3f
#include "stdio.h"
#include "conio.h"
int
main() {
union{
[Code] ....
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Mar 1, 2014
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There are a few ways I can think of:
- Passing an object into a function as an argument
- An object calling a function with a dot operator
- Creating a new object through a Constructor and Class(Does that count?)
Are there other ways that objects interact with functions that I am not thinking of?
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Apr 28, 2015
We are coding a Blackjack/21 game. I have a Deck.cpp class, Deck.h, Play.cpp (holds Main), and Card.h (holds card struct). I also have a Hand class/header, but I'm not using it yet. This is what is required per instructor.I am having issues accessing the functions that are in my Deck class. I have tried a few other means to access the class's function, but I've already gotten rid of those. These three are my latest attempts with the specific errors in the comment on the line the error was happening.
ve.
Here is my Deck.h
#pragma once
#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>
#include <ctime>
#include <iomanip>
#include "Card.h"
#include "Hand.h"
using namespace std;
class Deck
[Code]...
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May 24, 2013
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How would you calculate the total surface covered (if any overlap only one counts).
Cannot use a big array of bools as the memory limit is 512 MiB.
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Jan 27, 2013
So i have been banging my head against a wall with this problem for awhile. I have also copy and pasted direct examples from the internet but nothing seems to sort it right.
Node Header
Code:
#ifndef _NODE_H
#define _NODE_H
#include <stdio.h>
class Node {
public:
Node();
Node(int weight, char value, Node* left = NULL, Node* right = NULL);
[Code] ....
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Dec 8, 2013
//PROGRAM - TRAIN RESERVATION
#include<iostream.h>
#include<conio.h>
#include<string.h>
#include<dos.h>
#include<stdio.h>
#include<fstream.h>
#include<process.h>
[Code] .....
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Jan 30, 2015
Error message is identifier expected and declaration terminated incorrectly.
//to define a class Employee
#include<iostream.h>
#include<stdio.h>
#include<string.h>
#include<conio.h>
class cEmp {
[code]....
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Nov 12, 2014
This has been bothering me for a while now, and I finally put together an example:
#include <iostream>
#include <string>
using namespace::std;
[Code]....
In the code above, the two classes hold pointers to each other, and that's fine but it doesn't seem right since C++ prefers to pass by reference. Yes, it can still do that (see testbox and testball) but even that seems odd to me because still you need to use pointer notation for the enclosed object. Am I the only one who feels this way, and should I just get over it? Or am I missing something that would allow an object to hold a reference?
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Sep 12, 2013
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Feb 6, 2014
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Jun 22, 2014
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#include<windows.h>
#include <stdio.h>
#include <stdlib.h>
#include<Gl/gl.h>
#include<GL/glut.h>
int n;
int m;
int *image;
[Code] ....
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Jan 3, 2014
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Sep 14, 2013
I've read up on .bmp files on wikipedia and am currently attempting to make a function that can export a .bmp file of the screen of my programs. I've already begun work on it but it isn't working. The code I have so far is:
typedef char Byte;
typedef int Byte4;
typedef short Byte2;
struct BMP_Header {
[Code] ....
My problems are that when less then the required amount of bytes is needed to store a value in the file, the 00 bytes are skipped (Ex. The file will contain 42 instead of 42 00 00 00), and the Pixels are stored as nothing but 0D ( every value intended for storing pixel data is 0D ).
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Nov 17, 2013
I don't know why, but textures in OpenGL are white. One day, I must've change something, and now my textures wont load properly. I tried rewriting my code that loads things multiple times, my textures still are white. Here is my code:
(I switched back to the FF pipeline temporarily, in my other projects I use shaders.)
Sprite.hpp
#include <SDL.h>
#include <SDL_opengl.h>
#include <fstream>
#include <iostream>
#include <string>
#include <vector>
#ifndef _SPRITE_H_
#define _SPRITE_H_
[Code] ....
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Jan 20, 2013
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Jun 20, 2014
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Jul 11, 2014
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May 23, 2013
How can i convert pixel to [-1..1]coordinate in opengl? Which function? I want to write a program that is work with
glutmousefunc(),
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Mar 5, 2013
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Aug 15, 2014
I am trying to compile an OpenGL program in Ubuntu.This program opens a blank window.
Code:
#include <GL/glew.h>
#include <GLFW/glfw3.h>
#include <cstdio>
#include <iostream>
int main(int argc,char* argv[])
[code]....
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Jul 19, 2013
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Aug 27, 2013
I recently made a heightmap, it uses a triangle strip /row, and I try to figure out how can i color the triangles one by one. So, for example I have a color array of 9:
[0.0f,0.2f,0.6f //a triangles first vertex
0.0f,0.4f,0.3f //second vertex
0.0f,0.7f,0.2f] //third vertex
And I want to use it to color all triangles with it. My heightmap coords are in a vector:
vector<GLfloat> hmapcrds [x1,h1,z1; x2,h2,z2;...]
Like this:
c1 c2 c3 c4 c5 //row 1
c6 c7 c8 c9 c10 //row 2 coordinates
index array:c6->c1->c7->c2 ...cn->c(n-rwosize)->c(n+1)->cn->c(n-rwosize+1)
I draw my elements with a VAO and drawelements/row; (i tried drawrange but didnt work)
...
glGenVertexArrays(1,&VertArrObj);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER,indexBuffer);
glBufferData(GL_ELEMENT_ARRAY_BUFFER,sizeof(GLuint)*v_heightIndexes.sie(),&v_heightIndexes[0],GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER,vertexBuffer);
[Code] ....
I think it want to index my color array too, so how can i do that it only reads the 3 colors from my array, the repeat it /vertex/triangle till the end of drawing.
The shaders work fine, i changed the map to a triangle so it applied these colors, but with the map "I see only darkness before me".
with my working shader without color "in" - height coloring: [URL] ....
(I also want to do texturing per triangle.)
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Feb 12, 2013
So I did read, however it said also that it was memory intensive and I had a question... I also came across this:
Window.pushGLStates();
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Window.draw should exist and even though I have all the proper includes I still get it telling me that 'Draw' is not a member of sf::Window
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Oct 10, 2013
I am supposed to create a class of rectangular prism in opengl. I am having touble in writing my "draw()" function.
I have searched the web, and lots of the sites have:
glBegin(GL_Quads);
glVertex3f(x,y,z);
glVertex3f(...);
glVertex3f(...);
glVertex3f(...);
3D coordinates for each face.
For my code, I am getting a value for lengths of x, y and z like "getXlength(x_length)" etc... I would like to know how I can use these values to draw the prism rather than giving values for each coordinates in each face.
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