A little gl help required
BlitzMax Forums/OpenGL Module/A little gl help required
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| I'm a bit of a noob when it comes to this openGL stuff, so with that in mind could you tell me why this doesn't do anything. it should draw a spiral of points. (codebox) Graphics 640,480,0,32 glMatrixMode(gl_PROJECTION) glLoadIdentity() glClearColor(0.0,0.0,0.0,1.0) glColor3f(0.0,1.0,0.0) Local x#,y#,z#,angle# While Not KeyHit(key_escape) glClear(GL_COLOR_BUFFER_BIT) glPushMatrix() glRotatef(xRot,1.0,0.0,0.0) glRotatef(yRot,0.0,1.0,0.0) z=-50.0 glBegin(GL_POINTS) For angle=0.0 To (2.0*Pi)*3.0 Step 0.1 x=50.0*Sin(angle) y=50.0*Cos(angle) glVertex3f(x,y,z) z:+0.5 Next glEnd() glPopMatrix() glSwapBuffers() glFlush() Flip Wend (/codebox) |
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| this is just a guess (so apologies if i'm wrong), but wouldn't you need to specify the gl driver before you do graphics? |
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| Use GLGraphics instead of Graphics. That does what dan says, just in one line, not 2 :) |
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| It should still work with Max2D gl graphics driver. Also I don't think you should use glSwapBuffers(), just use Flip() |
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| You muste use the GL Modelview Matrix to transform objects in the worldspace. cu olli |
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