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Improved OpenGL and X11 rotating cube examples.

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binary1248 2015-01-12 18:15:46 +01:00
parent e2420dfe76
commit 650e792350
2 changed files with 50 additions and 35 deletions
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83
examples/X11/X11.cpp
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@ -36,6 +36,10 @@ void initialize(sf::Window& window)
static const double pi = 3.141592654; static const double pi = 3.141592654;
GLdouble extent = std::tan(90.0 * pi / 360.0); GLdouble extent = std::tan(90.0 * pi / 360.0);
glFrustum(-extent, extent, -extent, extent, 1.0, 500.0); glFrustum(-extent, extent, -extent, extent, 1.0, 500.0);
// Enable position and texture coordinates vertex components
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
} }
//////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////
@ -62,46 +66,57 @@ void draw(sf::Window& window, float elapsedTime)
glRotatef(elapsedTime * 6.f, 0.f, 1.f, 0.f); glRotatef(elapsedTime * 6.f, 0.f, 1.f, 0.f);
glRotatef(elapsedTime * 18.f, 0.f, 0.f, 1.f); glRotatef(elapsedTime * 18.f, 0.f, 0.f, 1.f);
// Draw a cube // Define a 3D cube (6 faces made of 2 triangles composed by 3 vertices)
glBegin(GL_QUADS); static const GLfloat cube[] =
{
// positions // colors
-50, -50, -50, 1, 1, 0,
-50, 50, -50, 1, 1, 0,
-50, -50, 50, 1, 1, 0,
-50, -50, 50, 1, 1, 0,
-50, 50, -50, 1, 1, 0,
-50, 50, 50, 1, 1, 0,
glColor3f(1.f, 1.f, 0.f); 50, -50, -50, 1, 1, 0,
glVertex3f(-50.f, -50.f, -50.f); 50, 50, -50, 1, 1, 0,
glVertex3f(-50.f, 50.f, -50.f); 50, -50, 50, 1, 1, 0,
glVertex3f( 50.f, 50.f, -50.f); 50, -50, 50, 1, 1, 0,
glVertex3f( 50.f, -50.f, -50.f); 50, 50, -50, 1, 1, 0,
50, 50, 50, 1, 1, 0,
glColor3f(1.f, 1.f, 0.f); -50, -50, -50, 1, 0, 1,
glVertex3f(-50.f, -50.f, 50.f); 50, -50, -50, 1, 0, 1,
glVertex3f(-50.f, 50.f, 50.f); -50, -50, 50, 1, 0, 1,
glVertex3f( 50.f, 50.f, 50.f); -50, -50, 50, 1, 0, 1,
glVertex3f( 50.f, -50.f, 50.f); 50, -50, -50, 1, 0, 1,
50, -50, 50, 1, 0, 1,
glColor3f(0.f, 1.f, 1.f); -50, 50, -50, 1, 0, 1,
glVertex3f(-50.f, -50.f, -50.f); 50, 50, -50, 1, 0, 1,
glVertex3f(-50.f, 50.f, -50.f); -50, 50, 50, 1, 0, 1,
glVertex3f(-50.f, 50.f, 50.f); -50, 50, 50, 1, 0, 1,
glVertex3f(-50.f, -50.f, 50.f); 50, 50, -50, 1, 0, 1,
50, 50, 50, 1, 0, 1,
glColor3f(0.f, 1.f, 1.f); -50, -50, -50, 0, 1, 1,
glVertex3f(50.f, -50.f, -50.f); 50, -50, -50, 0, 1, 1,
glVertex3f(50.f, 50.f, -50.f); -50, 50, -50, 0, 1, 1,
glVertex3f(50.f, 50.f, 50.f); -50, 50, -50, 0, 1, 1,
glVertex3f(50.f, -50.f, 50.f); 50, -50, -50, 0, 1, 1,
50, 50, -50, 0, 1, 1,
glColor3f(1.f, 0.f, 1.f); -50, -50, 50, 0, 1, 1,
glVertex3f(-50.f, -50.f, 50.f); 50, -50, 50, 0, 1, 1,
glVertex3f(-50.f, -50.f, -50.f); -50, 50, 50, 0, 1, 1,
glVertex3f( 50.f, -50.f, -50.f); -50, 50, 50, 0, 1, 1,
glVertex3f( 50.f, -50.f, 50.f); 50, -50, 50, 0, 1, 1,
50, 50, 50, 0, 1, 1
};
glColor3f(1.f, 0.f, 1.f); // Draw the cube
glVertex3f(-50.f, 50.f, 50.f); glVertexPointer(3, GL_FLOAT, 6 * sizeof(GLfloat), cube);
glVertex3f(-50.f, 50.f, -50.f); glColorPointer(3, GL_FLOAT, 6 * sizeof(GLfloat), cube + 3);
glVertex3f( 50.f, 50.f, -50.f); glDrawArrays(GL_TRIANGLES, 0, 36);
glVertex3f( 50.f, 50.f, 50.f);
glEnd();
} }

2
examples/opengl/OpenGL.cpp
View File

@ -80,7 +80,7 @@ int main()
glBindTexture(GL_TEXTURE_2D, texture); glBindTexture(GL_TEXTURE_2D, texture);
// Define a 3D cube (6 faces made of 2 triangles composed by 3 vertices) // Define a 3D cube (6 faces made of 2 triangles composed by 3 vertices)
GLfloat cube[] = static const GLfloat cube[] =
{ {
// positions // texture coordinates // positions // texture coordinates
-20, -20, -20, 0, 0, -20, -20, -20, 0, 0,