diff options
Diffstat (limited to 'source/blender/freestyle/intern/rendering/GLRenderer.cpp')
| -rwxr-xr-x | source/blender/freestyle/intern/rendering/GLRenderer.cpp | 467 |
1 files changed, 467 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/rendering/GLRenderer.cpp b/source/blender/freestyle/intern/rendering/GLRenderer.cpp new file mode 100755 index 00000000000..75901e09c2b --- /dev/null +++ b/source/blender/freestyle/intern/rendering/GLRenderer.cpp @@ -0,0 +1,467 @@ + +// +// Copyright (C) : Please refer to the COPYRIGHT file distributed +// with this source distribution. +// +// This program is free software; you can redistribute it and/or +// modify it under the terms of the GNU General Public License +// as published by the Free Software Foundation; either version 2 +// of the License, or (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// +/////////////////////////////////////////////////////////////////////////////// + +#include "../stroke/Stroke.h" +#include "../scene_graph/IndexedFaceSet.h" +#include "../scene_graph/NodeDrawingStyle.h" +#include "../scene_graph/NodeLight.h" +#include "../scene_graph/NodeCamera.h" +#include "../scene_graph/NodeTransform.h" +#include "../scene_graph/NodeShape.h" +#include "../scene_graph/OrientedLineRep.h" +#include "../scene_graph/VertexRep.h" + +#include "../scene_graph/TriangleRep.h" + +#include "GLRenderer.h" + +static GLenum lights[8] = {GL_LIGHT0, + GL_LIGHT1, + GL_LIGHT2, + GL_LIGHT3, + GL_LIGHT4, + GL_LIGHT5, + GL_LIGHT6, + GL_LIGHT7}; + +void GLRenderer::visitIndexedFaceSet(IndexedFaceSet& ifs) +{ + /*GLuint dl = ifs.displayList(); + if(dl != 0){ + glCallList(dl); + return; + }*/ + unsigned int fIndex = 0; + + const real * vertices = ifs.vertices(); + const real * normals = ifs.normals(); + const real * texCoords = ifs.texCoords(); + const FrsMaterial *const* frs_materials = ifs.frs_materials(); + const unsigned *vindices = ifs.vindices(); + const unsigned *nindices = ifs.nindices(); + const unsigned *mindices = ifs.mindices(); + const unsigned *tindices = ifs.tindices(); + const unsigned numfaces = ifs.numFaces(); + const IndexedFaceSet::TRIANGLES_STYLE * faceStyle = ifs.trianglesStyle(); + const unsigned *numVertexPerFace = ifs.numVertexPerFaces(); + + + const unsigned* pvi = vindices; + const unsigned* pni = nindices; + const unsigned* pmi = mindices; + const unsigned* pti = tindices; + + //dl = glGenLists(1); + //glNewList(dl, GL_COMPILE_AND_EXECUTE); + for(fIndex=0; fIndex<numfaces; fIndex++) + { + switch(faceStyle[fIndex]) + { + case IndexedFaceSet::TRIANGLE_STRIP: + RenderTriangleStrip(vertices, normals, frs_materials, texCoords, pvi, pni, pmi, pti, numVertexPerFace[fIndex]); + break; + case IndexedFaceSet::TRIANGLE_FAN: + RenderTriangleFan(vertices, normals, frs_materials, texCoords, pvi, pni, pmi, pti, numVertexPerFace[fIndex]); + break; + case IndexedFaceSet::TRIANGLES: + RenderTriangles(vertices, normals, frs_materials, texCoords, pvi, pni, pmi, pti, numVertexPerFace[fIndex]); + break; + } + pvi += numVertexPerFace[fIndex]; + pni += numVertexPerFace[fIndex]; + if(pmi) + pmi += numVertexPerFace[fIndex]; + if(pti) + pti += numVertexPerFace[fIndex]; + } + //glEndList(); + //ifs.setDisplayList(dl); +} + +void GLRenderer::visitNodeTransform(NodeTransform& tn) { + if(tn.scaled()) + glEnable(GL_NORMALIZE); +} + +void GLRenderer::visitNodeTransformBefore(NodeTransform& tn) { + glPushMatrix(); + + // Now apply transform + applyTransform(tn.matrix()); +} + +void GLRenderer::visitNodeTransformAfter(NodeTransform& tn) { + glPopMatrix(); +} + +void GLRenderer::visitNodeLight(NodeLight& ln) +{ + if(true != ln.isOn()) + return; + + int number = ln.number(); + + glLightfv(lights[number], GL_AMBIENT, ln.ambient()); + glLightfv(lights[number], GL_DIFFUSE, ln.diffuse()); + glLightfv(lights[number], GL_SPECULAR, ln.specular()); + glLightfv(lights[number], GL_POSITION, ln.position()); + + glEnable(lights[number]); +} + +void GLRenderer::visitNodeCamera(NodeCamera& cn) +{ + const double * mvm = cn.modelViewMatrix(); + const double * pm = cn.projectionMatrix(); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glMultMatrixd(pm); + + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glMultMatrixd(mvm); + + +} + +void GLRenderer::visitNodeDrawingStyleBefore(NodeDrawingStyle& ds) { + glPushAttrib(GL_ALL_ATTRIB_BITS); +} + +void GLRenderer::visitNodeDrawingStyleAfter(NodeDrawingStyle&) { + glPopAttrib(); +} + +void GLRenderer::RenderTriangleStrip( const real *iVertices, + const real *iNormals, + const FrsMaterial *const* iMaterials, + const real *iTexCoords, + const unsigned* iVIndices, + const unsigned* iNIndices, + const unsigned* iMIndices, + const unsigned* iTIndices, + const unsigned iNVertices) +{ + unsigned index = -1; + glBegin(GL_TRIANGLE_STRIP); + for(unsigned int i=0; i<iNVertices; i++) + { + if(iMIndices){ + if(iMIndices[i] != index){ + visitFrsMaterial(*(iMaterials[iMIndices[i]])); + index = iMIndices[i]; + } + } + + if(iTIndices){ + glTexCoord2f( iTexCoords[iTIndices[i]], + iTexCoords[iTIndices[i]+1]); + } + + glNormal3r(iNormals[iNIndices[i]], + iNormals[iNIndices[i]+1], + iNormals[iNIndices[i]+2]); + + glVertex3r( iVertices[iVIndices[i]], + iVertices[iVIndices[i]+1], + iVertices[iVIndices[i]+2]); + } + glEnd(); +} + +void GLRenderer::RenderTriangleFan( const real *iVertices, + const real *iNormals, + const FrsMaterial *const* iMaterials, + const real *iTexCoords, + const unsigned* iVIndices, + const unsigned* iNIndices, + const unsigned* iMIndices, + const unsigned* iTIndices, + const unsigned iNVertices) +{ + unsigned index = -1; + glBegin(GL_TRIANGLE_FAN); + for(unsigned int i=0; i<iNVertices; i++) + { + if(iMIndices){ + if(iMIndices[i] != index){ + visitFrsMaterial(*(iMaterials[iMIndices[i]])); + index = iMIndices[i]; + } + } + if(iTIndices){ + glTexCoord2f( iTexCoords[iTIndices[i]], + iTexCoords[iTIndices[i]+1]); + } + + glNormal3r(iNormals[iNIndices[i]], + iNormals[iNIndices[i]+1], + iNormals[iNIndices[i]+2]); + + glVertex3r( iVertices[iVIndices[i]], + iVertices[iVIndices[i]+1], + iVertices[iVIndices[i]+2]); + } + glEnd(); +} + +void GLRenderer::RenderTriangles( const real *iVertices, + const real *iNormals, + const FrsMaterial *const* iMaterials, + const real *iTexCoords, + const unsigned* iVIndices, + const unsigned* iNIndices, + const unsigned* iMIndices, + const unsigned* iTIndices, + const unsigned iNVertices) +{ + unsigned index = -1; + glBegin(GL_TRIANGLES); + for(unsigned int i=0; i<iNVertices; i++) + { + if(iMIndices){ + if(iMIndices[i] != index){ + visitFrsMaterial(*(iMaterials[iMIndices[i]])); + index = iMIndices[i]; + } + } + if(iTIndices){ + glTexCoord2f( iTexCoords[iTIndices[i]], + iTexCoords[iTIndices[i]+1]); + } + + glNormal3r(iNormals[iNIndices[i]], + iNormals[iNIndices[i]+1], + iNormals[iNIndices[i]+2]); + + glVertex3r( iVertices[iVIndices[i]], + iVertices[iVIndices[i]+1], + iVertices[iVIndices[i]+2]); + } + glEnd(); +} + +void GLRenderer::visitLineRep( LineRep& iLine) +{ + if(iLine.width() != 0) + glLineWidth(iLine.width()); + + switch(iLine.style()) + { + case LineRep::LINES: + glBegin(GL_LINES); + break; + case LineRep::LINE_STRIP: + glBegin(GL_LINE_STRIP); + break; + case LineRep::LINE_LOOP: + glBegin(GL_LINE_LOOP); + break; + default: + return; + } + + const vector<Vec3r>& vertices = iLine.vertices(); + //soc unused float step=1.f/vertices.size(); + vector<Vec3r>::const_iterator v; + + for(v=vertices.begin(); v!=vertices.end(); v++) + glVertex3r((*v)[0], (*v)[1], (*v)[2]); + + glEnd(); +} + + +void GLRenderer::visitTriangleRep( TriangleRep& iTriangle) +{ + glPushAttrib(GL_ALL_ATTRIB_BITS); + switch(iTriangle.style()) + { + case TriangleRep::FILL: + glPolygonMode(GL_FRONT, GL_FILL); + break; + case TriangleRep::LINES: + glPolygonMode(GL_FRONT, GL_LINES); + break; + default: + return; + } + + glBegin(GL_TRIANGLES); + for(int i=0; i<3; ++i) + { + glColor3f(iTriangle.color(i)[0], iTriangle.color(i)[1], iTriangle.color(i)[2]); + glVertex3r(iTriangle.vertex(i)[0], iTriangle.vertex(i)[1], iTriangle.vertex(i)[2]); + } + + glEnd(); + + + + glPopAttrib(); + +} + +void GLRenderer::visitOrientedLineRep(OrientedLineRep& iLine) +{ + switch(iLine.style()) + { + case LineRep::LINES: + glBegin(GL_LINES); + break; + case LineRep::LINE_STRIP: + glBegin(GL_LINE_STRIP); + break; + case LineRep::LINE_LOOP: + glBegin(GL_LINE_LOOP); + break; + default: + return; + } + + int i=0; + int ncolor = iLine.getId().getFirst()%3; + + const vector<Vec3r>& vertices = iLine.vertices(); + float step=1.f/vertices.size(); + vector<Vec3r>::const_iterator v; + for(v=vertices.begin(); v!=vertices.end(); v++) + { + switch(ncolor) + { + case 0: + glColor3f(i*step,0.f,0.f); + break; + case 1: + glColor3f(0.f, i*step, 0.f); + break; + case 2: + glColor3f(0.f, 0.f, i*step); + break; + default: + glColor3f(i*step, i*step,i*step); + break; + } + i++; + glVertex3r((*v)[0], (*v)[1], (*v)[2]); + } + + glEnd(); +} + +void GLRenderer::visitVertexRep( VertexRep& iVertex) +{ + if(iVertex.pointSize() != 0.f) + glPointSize(iVertex.pointSize()); + + glBegin(GL_POINTS); + glVertex3r(iVertex.x(), iVertex.y(), iVertex.z()); + glEnd(); +} + +void GLRenderer::visitDrawingStyle(DrawingStyle& iDrawingStyle) +{ + + // Drawing Style management + switch(iDrawingStyle.style()) + { + case DrawingStyle::FILLED: + glPolygonMode(GL_FRONT, GL_FILL); + glShadeModel(GL_SMOOTH); + break; + + case DrawingStyle::LINES: + glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); + glEnable(GL_BLEND); + glEnable(GL_LINE_SMOOTH); + glPolygonMode(GL_FRONT, GL_LINE); + glLineWidth(iDrawingStyle.lineWidth()); + break; + + case DrawingStyle::POINTS: + glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); + glEnable(GL_BLEND); + glEnable(GL_POINT_SMOOTH); + glPolygonMode(GL_FRONT, GL_POINT); + glPointSize(iDrawingStyle.pointSize()); + break; + + case DrawingStyle::INVISIBLE: + glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); + glDepthMask(0); + break; + + default: + break; + } + + glLineWidth(iDrawingStyle.lineWidth()); + glPointSize(iDrawingStyle.pointSize()); + + // FIXME + if(true == iDrawingStyle.lightingEnabled()) + glEnable(GL_LIGHTING); + else + glDisable(GL_LIGHTING); +} + +void GLRenderer::visitFrsMaterial(FrsMaterial& m) { + const float* diff = m.diffuse(); + const float* amb = m.ambient(); + const float* spec = m.specular(); + const float* em = m.emission(); + + RenderColor(diff); + glMaterialfv(GL_FRONT, GL_AMBIENT, amb); + glMaterialfv(GL_FRONT, GL_DIFFUSE, diff); + glMaterialfv(GL_FRONT, GL_SPECULAR, spec); + glMaterialfv(GL_FRONT, GL_EMISSION, em); + glMaterialf(GL_FRONT, GL_SHININESS, m.shininess()); +} + +void GLRenderer::visitFrsMaterial(const FrsMaterial& m) { + const float* diff = m.diffuse(); + const float* amb = m.ambient(); + const float* spec = m.specular(); + const float* em = m.emission(); + + RenderColor(diff); + glMaterialfv(GL_FRONT, GL_AMBIENT, amb); + glMaterialfv(GL_FRONT, GL_DIFFUSE, diff); + glMaterialfv(GL_FRONT, GL_SPECULAR, spec); + glMaterialfv(GL_FRONT, GL_EMISSION, em); + glMaterialf(GL_FRONT, GL_SHININESS, m.shininess()); +} +void GLRenderer::applyTransform( const Matrix44r &iMatrix) +{ + real m[16]; + for(int lign=0; lign<4; lign++) + for(int column=0; column<4; column++) + m[column*4+lign] = iMatrix(lign, column); + + glMultMatrixr(m); +} + +void GLRenderer::RenderColor( const float *rgba) +{ + glColor4fv(rgba); +} |