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Why wont this work?

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5 replies to this topic

Posted 05 January 2002 - 08:51 AM

ive been trying to make a "mind field" with pyramids but when i run the code, there is nothing there! here is the code for DrawGLScene()
  int DrawGLScene(GLvoid) // Here's Where We Do All The Drawing { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear The Screen And The Depth Buffer glLoadIdentity(); // Reset The Current Modelview Matrix glTranslatef( -3.0f, 0.0f, -8.0f); // Move 1.5 left and 8.0 out glRotatef( xrot, 1.0f, 0.0f, 0.0f); glRotatef( yrot, 0.0f, 1.0f, 0.0f); glBindTexture(GL_TEXTURE_2D, texture[1]); // Select a texture to use glBegin(GL_TRIANGLES); for (GLfloat x=1.0f; x<=4.0f; x+=1.0f) { for (GLfloat y=1.0f; y<=4.0f; y+=1.0f) { for (GLfloat z=1.0f; z<=4.0f; z+=1.0f) { glTranslatef( (x+4.0f), (y+4.0f), (z+4.0f)); // Move the screen triangle.DrawTriangle(); // Draw a triangle } } } glEnd(); xrot+=0.4f; yrot+=0.4f; return TRUE; // Everything Went OK } 
here is the code for my triangle class
  class Triangle // This class will draw a triangle { public: void DrawTriangle() // This will draw a triangle with the info given { glNormal3f( 0.0f, 0.0f, 1.0f); // Normal pointing towards viewer glTexCoord2f( 0.5f, 1.0f); // Top middle of texture glVertex3f( 0.0f, 1.0f, 0.0f); // Top point( front) glTexCoord2f( 0.0f, 0.0f); // Left bottom of texture glVertex3f( -1.0f, -1.0f, 1.0f); // Left point( front) glTexCoord2f( 1.0f, 0.0f); // Right bottom of texture glVertex3f( 1.0f, -1.0f, 1.0f); // Right point( front) glNormal3f( 1.0f, 0.0f, 0.0f); // Normal pointing right of viewer glTexCoord2f( 0.5f, 1.0f); // Top middle of texture glVertex3f( 0.0f, 1.0f, 0.0f); // Top point( right) glTexCoord2f( 0.0f, 0.0f); // Left bottom of texture glVertex3f( 1.0f, -1.0f, 1.0f); // Left point( right) glTexCoord2f( 1.0f, 0.0f); // Right bottom of texture glVertex3f( 1.0f, -1.0f, -1.0f); // Right point( right) glNormal3f( 0.0f, 0.0f, -1.0f); // Normal pointing away from viewer glTexCoord2f( 0.5f, 1.0f); // Top middle of texture glVertex3f( 0.0f, 1.0f, 0.0f); // Top point( back) glTexCoord2f( 0.0f, 0.0f); // Left bottom of texture glVertex3f( 1.0f, -1.0f, -1.0f); // Left point( back) glTexCoord2f( 1.0f, 0.0f); // Right bottom of texture glVertex3f( -1.0f, -1.0f, -1.0f); // Right point( back) glNormal3f( -1.0f, 0.0f, 0.0f); // Normal pointing left of viewer glTexCoord2f( 0.5f, 1.0f); // Top middle of texture glVertex3f( 0.0f, 1.0f, 0.0f); // Top point( left) glTexCoord2f( 0.0f, 0.0f); // Left bottom of texture glVertex3f( -1.0f, -1.0f, -1.0f); // Left point( left) glTexCoord2f( 1.0f, 0.0f); // Right bottom of texture glVertex3f( -1.0f, -1.0f, 1.0f); // Right point( left) } }; 
plz help thx "Those who serve no purpose, have no purpose. SSC the Super Saiyan Cat" Edited by - SonShadowCat on January 5, 2002 4:22:54 PM Edited by - SonShadowCat on January 5, 2002 4:23:23 PM

#2manuelb  Members

Posted 05 January 2002 - 10:20 AM

I think, you are using only 1 texture.....
If you made a array of 1 element like
MyTypeofTexture texture[1];
the first element is texture[0];

but at this line:
glBindTexture(GL_TEXTURE_2D, texture[1]); // Select a texture

you are selecting the secont element of the array texture[1]

but if you are using more then one texture, it´s not the problem....

Posted 05 January 2002 - 10:25 AM

yea i figured that out like 10 min before you posted ^^

and becuase i fixed it something else happened( check my new post)

thx anyway

"Those who serve no purpose, have no purpose. SSC the Super Saiyan Cat"

#4Brother Bob  Moderators

Posted 06 January 2002 - 01:01 AM

You also have a glTranslate inside a glBegin/glEnd pair (the one in the inner for loop), and that''s illegal.

Posted 06 January 2002 - 02:08 AM

it is illegal?

then how am i supposed to make a mine field?

make the x,y,z global?

"Those who serve no purpose, have no purpose. SSC the Super Saiyan Cat"