# Filename : multiple_parameterization.py # Author : Stephane Grabli # Date : 04/08/2005 # Purpose : The thickness and the color of the strokes vary continuously # independently from occlusions although only # visible lines are actually drawn. This is equivalent # to assigning the thickness using a parameterization covering # the complete silhouette (visible+invisible) and drawing # the strokes using a second parameterization that only # covers the visible portions. from freestyle import ChainSilhouetteIterator, ConstantColorShader, IncreasingColorShader, \ IncreasingThicknessShader, Operators, QuantitativeInvisibilityUP1D, SamplingShader, \ TextureAssignerShader, TrueUP1D from shaders import pyHLRShader Operators.select(QuantitativeInvisibilityUP1D(0)) ## Chain following the same nature, but without the restriction ## of staying inside the selection (0). Operators.bidirectional_chain(ChainSilhouetteIterator(0)) shaders_list = [ SamplingShader(20), IncreasingThicknessShader(1.5, 30), ConstantColorShader(0.0, 0.0, 0.0), IncreasingColorShader(1, 0, 0, 1, 0, 1, 0, 1), TextureAssignerShader(-1), pyHLRShader(), ## this shader draws only visible portions ] Operators.create(TrueUP1D(), shaders_list)
# along with this program; if not, write to the Free Software Foundation, # Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. # # ##### END GPL LICENSE BLOCK ##### # Filename : sketchy_multiple_parameterization.py # Author : Stephane Grabli # Date : 04/08/2005 # Purpose : Builds sketchy strokes whose topology relies on a # parameterization that covers the complete lines (visible+invisible) # whereas only the visible portions are actually drawn from ChainingIterators import pySketchyChainSilhouetteIterator from freestyle import IncreasingColorShader, IncreasingThicknessShader, Operators, \ QuantitativeInvisibilityUP1D, SamplingShader, SmoothingShader, SpatialNoiseShader, \ TextureAssignerShader, TrueUP1D from shaders import pyHLRShader Operators.select(QuantitativeInvisibilityUP1D(0)) Operators.bidirectional_chain(pySketchyChainSilhouetteIterator(3, False)) shaders_list = [ SamplingShader(2), SpatialNoiseShader(15, 120, 2, True, True), IncreasingThicknessShader(5, 30), SmoothingShader(100, 0.05, 0, 0.2, 0, 0, 0, 1), IncreasingColorShader(0, 0.2, 0, 1, 0.2, 0.7, 0.2, 1), TextureAssignerShader(6), pyHLRShader(), ] Operators.create(TrueUP1D(), shaders_list)