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1991-11-12
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86 lines
!---------------------------------------------------------------
!
! TUTORIAL19 - RayDance tutorial script #19.
!
! This script demonstrates wrap mode texture mapping.
!
! Concepts include :
!
! o Wrap mode textures on an extruded surface.
!
!---------------------------------------------------------------
! Use a print statement to display descriptive text on the
! message window.
? "TUTORIAL19 - This script creates two extruded 'flag'\n",
"objects. Both are extruded from the same outline. The\n",
"outlines are imported from a disk file. The top 'flag'\n",
"is texture mapped with a PLANE map. The lower 'flag' is\n",
"texture mapped using wrap mode. Both 'flags' are Phong\n",
"smoothed. Note how the texture of the lower 'flag' \n",
"follows its contours!\n";
FLAG_MAP : texturemap( "flag.ilbm" );
! Create a surface for our flags...
! ka kd ks n km kr ir kb flgs
SHINY : surface(PHONG, .5,.8,.4,30, 0, 0, 0, 0, 0 );
real x1,x2;
! Import the outline of our flag...
FLAG_OUTLINE : outline( "flag1.geo", [2,1,1], xy );
! Figure the widht of this outline
X1 = FLAG_OUTLINE[0]'X;
X2 = FLAG_OUTLINE[FLAG_OUTLINE'STEPS-1]'X;
PLANE_MAP : texture( PLANE, FLAG_MAP, [25,0,150], [0,1,0], [1,0,0],
280,X2-X1,250, 1,1, SMOOTH3 REPEAT );
extrude( ( FLAG_OUTLINE ),
250, [0,0,250], [1,1,1], [0,0,25], [0,0,0],
PLANE_MAP, SHINY, OPEN NOENDS PHONG );
extrude( ( FLAG_OUTLINE ),
250, [0,0,250], [1,1,1], [0,0,-275], [0,0,0],
FLAG_MAP(1,1,SMOOTH3|REPEAT), SHINY, OPEN NOENDS PHONG );
! Specify the ambient light.
AMBIENT( [0,0,0], [0.6,0.6,0.6], [0,0,1], 0, 0 );
! Specify the STAR light.
STAR( [3000,-50000,10000], [1,.9,1], 300 );
! Set the background color to a dark purple
BACKGROUND( PLAIN, [0,0.05,0.15] );
! The camera will be positioned along the negative y axis aiming
! toward the central objects
CAMERA'POS = [0,1500,350];
CAMERA'TARGET = [0,0,0];
! The scene has now been constructed, render it!
RENDER;
! All scripts must terminate with an END
END