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EXetoC 2014-10-04 18:44:17 +02:00
commit 343b930f43
1 changed files with 16 additions and 16 deletions
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32
examples/glut_example.nim
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@ -7,13 +7,13 @@ import glu
proc display() {.cdecl.} = proc display() {.cdecl.} =
glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT) # Clear color and depth buffers glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT) # Clear color and depth buffers
glMatrixMode(GL_MODELVIEW) # To operate on model-view matrix glMatrixMode(GL_MODELVIEW) # To operate on model-view matrix
# Render a color-cube consisting of 6 quads with different colors # Render a color-cube consisting of 6 quads with different colors
glLoadIdentity() # Reset the model-view matrix glLoadIdentity() # Reset the model-view matrix
glTranslatef(1.5, 0.0, -7.0) # Move right and into the screen glTranslatef(1.5, 0.0, -7.0) # Move right and into the screen
glBegin(GL_QUADS) # Begin drawing the color cube with 6 quads glBegin(GL_QUADS) # Begin drawing the color cube with 6 quads
# Top face (y = 1.0f) # Top face (y = 1.0f)
# Define vertices in counter-clockwise (CCW) order with normal pointing out # Define vertices in counter-clockwise (CCW) order with normal pointing out
glColor3f(0.0, 1.0, 0.0) # Green glColor3f(0.0, 1.0, 0.0) # Green
@ -56,11 +56,11 @@ proc display() {.cdecl.} =
glVertex3f(1.0, 1.0, 1.0) glVertex3f(1.0, 1.0, 1.0)
glVertex3f(1.0, -1.0, 1.0) glVertex3f(1.0, -1.0, 1.0)
glVertex3f(1.0, -1.0, -1.0) glVertex3f(1.0, -1.0, -1.0)
glEnd() # End of drawing glEnd() # End of drawing
glutSwapBuffers() # Swap the front and back frame buffers (double buffering) glutSwapBuffers() # Swap the front and back frame buffers (double buffering)
proc reshape(width: GLsizei, height: GLsizei) {.cdecl.} = proc reshape(width: GLsizei, height: GLsizei) {.cdecl.} =
# Compute aspect ratio of the new window # Compute aspect ratio of the new window
if height == 0: if height == 0:
@ -74,16 +74,16 @@ proc reshape(width: GLsizei, height: GLsizei) {.cdecl.} =
glLoadIdentity() # Reset glLoadIdentity() # Reset
# Enable perspective projection with fovy, aspect, zNear and zFar # Enable perspective projection with fovy, aspect, zNear and zFar
gluPerspective(45.0, width / height, 0.1, 100.0) gluPerspective(45.0, width / height, 0.1, 100.0)
loadExtensions()
glutInit()
glutInitDisplayMode(GLUT_DOUBLE)
glutInitWindowSize(640, 480)
glutInitWindowPosition(50, 50)
discard glutCreateWindow("OpenGL Example")
glutDisplayFunc(display) loadExtensions()
glutReshapeFunc(reshape) glutInit()
glutInitDisplayMode(GLUT_DOUBLE)
glutInitWindowSize(640, 480)
glutInitWindowPosition(50, 50)
discard glutCreateWindow("OpenGL Example")
glutDisplayFunc(display)
glutReshapeFunc(reshape)
glClearColor(0.0, 0.0, 0.0, 1.0) # Set background color to black and opaque glClearColor(0.0, 0.0, 0.0, 1.0) # Set background color to black and opaque
glClearDepth(1.0) # Set background depth to farthest glClearDepth(1.0) # Set background depth to farthest
@ -91,5 +91,5 @@ glEnable(GL_DEPTH_TEST) # Enable depth testing for z-c
glDepthFunc(GL_LEQUAL) # Set the type of depth-test glDepthFunc(GL_LEQUAL) # Set the type of depth-test
glShadeModel(GL_SMOOTH) # Enable smooth shading glShadeModel(GL_SMOOTH) # Enable smooth shading
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST) # Nice perspective corrections glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST) # Nice perspective corrections
glutMainLoop() glutMainLoop()