Initial import of 2.7 Lite.

examples/triangle.c

@@ -0,0 +1,94 @@
+//========================================================================
+// This is a small test application for GLFW.
+// The program opens a window (640x480), and renders a spinning colored
+// triangle (it is controlled with both the GLFW timer and the mouse).
+//========================================================================
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <GL/glfw.h>
+
+
+int main( void )
+{
+    int width, height, x;
+    double t;
+
+    // Initialise GLFW
+    if( !glfwInit() )
+    {
+        fprintf( stderr, "Failed to initialize GLFW\n" );
+        exit( EXIT_FAILURE );
+    }
+
+    // Open a window and create its OpenGL context
+    if( !glfwOpenWindow( 640, 480, 0,0,0,0, 0,0, GLFW_WINDOW ) )
+    {
+        fprintf( stderr, "Failed to open GLFW window\n" );
+
+        glfwTerminate();
+        exit( EXIT_FAILURE );
+    }
+
+    glfwSetWindowTitle( "Spinning Triangle" );
+
+    // Ensure we can capture the escape key being pressed below
+    glfwEnable( GLFW_STICKY_KEYS );
+
+    // Enable vertical sync (on cards that support it)
+    glfwSwapInterval( 1 );
+
+    do
+    {
+        t = glfwGetTime();
+        glfwGetMousePos( &x, NULL );
+
+        // Get window size (may be different than the requested size)
+        glfwGetWindowSize( &width, &height );
+
+        // Special case: avoid division by zero below
+        height = height > 0 ? height : 1;
+
+        glViewport( 0, 0, width, height );
+
+        // Clear color buffer to black
+        glClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
+        glClear( GL_COLOR_BUFFER_BIT );
+
+        // Select and setup the projection matrix
+        glMatrixMode( GL_PROJECTION );
+        glLoadIdentity();
+        gluPerspective( 65.0f, (GLfloat)width/(GLfloat)height, 1.0f, 100.0f );
+
+        // Select and setup the modelview matrix
+        glMatrixMode( GL_MODELVIEW );
+        glLoadIdentity();
+        gluLookAt( 0.0f, 1.0f, 0.0f,    // Eye-position
+                   0.0f, 20.0f, 0.0f,   // View-point
+                   0.0f, 0.0f, 1.0f );  // Up-vector
+
+        // Draw a rotating colorful triangle
+        glTranslatef( 0.0f, 14.0f, 0.0f );
+        glRotatef( 0.3f*(GLfloat)x + (GLfloat)t*100.0f, 0.0f, 0.0f, 1.0f );
+        glBegin( GL_TRIANGLES );
+          glColor3f( 1.0f, 0.0f, 0.0f );
+          glVertex3f( -5.0f, 0.0f, -4.0f );
+          glColor3f( 0.0f, 1.0f, 0.0f );
+          glVertex3f( 5.0f, 0.0f, -4.0f );
+          glColor3f( 0.0f, 0.0f, 1.0f );
+          glVertex3f( 0.0f, 0.0f, 6.0f );
+        glEnd();
+
+        // Swap buffers
+        glfwSwapBuffers();
+
+    } // Check if the ESC key was pressed or the window was closed
+    while( glfwGetKey( GLFW_KEY_ESC ) != GLFW_PRESS &&
+           glfwGetWindowParam( GLFW_OPENED ) );
+
+    // Close OpenGL window and terminate GLFW
+    glfwTerminate();
+
+    exit( EXIT_SUCCESS );
+}
+