From 6658b1fa2b4d69f1281c594e6a40093ba4f5670a Mon Sep 17 00:00:00 2001
From: EvilSpirit <anandamide@mail.ru>
Date: Tue, 3 May 2016 13:44:10 +0600
Subject: [PATCH] Allow combining extrude, lathe, translate and rotate group as
 assemblies.

This significantly improves performance e.g. in case of a sketch
containing a multitude of wooden panels, as the meshes can be
merely transformed instead of being joined.
---
 CHANGELOG.md                         |    4 +
 src/groupmesh.cpp                    |    8 +-
 src/sketch.h                         |    2 +-
 src/textscreens.cpp                  |    6 +-
 test/CMakeLists.txt                  |    4 +-
 test/group/translate_asy/normal.png  |  Bin 0 -> 8317 bytes
 test/group/translate_asy/normal.slvs | 2088 ++++++++++++++++++++++++++
 test/group/translate_asy/test.cpp    |   22 +
 test/harness.cpp                     |   12 +
 test/harness.h                       |    6 +-
 10 files changed, 2142 insertions(+), 10 deletions(-)
 create mode 100644 test/group/translate_asy/normal.png
 create mode 100644 test/group/translate_asy/normal.slvs
 create mode 100644 test/group/translate_asy/test.cpp

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2cbda8da..fce70d09 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ Changelog
 3.0
 ---
 
+New sketch features:
+  * Extrude, lathe, translate and rotate groups can now use the "assembly"
+    boolean operation, to increase performance.
+
 New export/import features:
   * Three.js: allow configuring projection for exported model, and initially
     use the current viewport projection.
diff --git a/src/groupmesh.cpp b/src/groupmesh.cpp
index a890195d..3c68d418 100644
--- a/src/groupmesh.cpp
+++ b/src/groupmesh.cpp
@@ -103,7 +103,7 @@ void SMesh::RemapFaces(Group *g, int remap) {
 }
 
 template<class T>
-void Group::GenerateForStepAndRepeat(T *steps, T *outs) {
+void Group::GenerateForStepAndRepeat(T *steps, T *outs, Group::CombineAs forWhat) {
     T workA, workB;
     workA = {};
     workB = {};
@@ -141,6 +141,8 @@ void Group::GenerateForStepAndRepeat(T *steps, T *outs) {
         // And tack this transformed copy on to the return.
         if(soFar->IsEmpty()) {
             scratch->MakeFromCopyOf(&transd);
+        } else if (forWhat == CombineAs::ASSEMBLE) {
+            scratch->MakeFromAssemblyOf(soFar, &transd);
         } else {
             scratch->MakeFromUnionOf(soFar, &transd);
         }
@@ -202,8 +204,8 @@ void Group::GenerateShellAndMesh() {
         srcg = SK.GetGroup(opA);
 
         if(!srcg->suppress) {
-            GenerateForStepAndRepeat<SShell>(&(srcg->thisShell), &thisShell);
-            GenerateForStepAndRepeat<SMesh> (&(srcg->thisMesh),  &thisMesh);
+            GenerateForStepAndRepeat<SShell>(&(srcg->thisShell), &thisShell, srcg->meshCombine);
+            GenerateForStepAndRepeat<SMesh> (&(srcg->thisMesh),  &thisMesh, srcg->meshCombine);
         }
     } else if(type == Type::EXTRUDE && haveSrc) {
         Group *src = SK.GetGroup(opA);
diff --git a/src/sketch.h b/src/sketch.h
index 7af9c8f3..f4f8e42b 100644
--- a/src/sketch.h
+++ b/src/sketch.h
@@ -268,7 +268,7 @@ public:
     bool IsMeshGroup();
 
     void GenerateShellAndMesh();
-    template<class T> void GenerateForStepAndRepeat(T *steps, T *outs);
+    template<class T> void GenerateForStepAndRepeat(T *steps, T *outs, Group::CombineAs forWhat);
     template<class T> void GenerateForBoolean(T *a, T *b, T *o, Group::CombineAs how);
     void GenerateDisplayItems();
 
diff --git a/src/textscreens.cpp b/src/textscreens.cpp
index 1d2613d2..7f05c758 100644
--- a/src/textscreens.cpp
+++ b/src/textscreens.cpp
@@ -352,12 +352,11 @@ void TextWindow::ShowGroupInfo() {
         bool un   = (g->meshCombine == Group::CombineAs::UNION);
         bool diff = (g->meshCombine == Group::CombineAs::DIFFERENCE);
         bool asy  = (g->meshCombine == Group::CombineAs::ASSEMBLE);
-        bool asa  = (g->type == Group::Type::LINKED);
 
         Printf(false, " %Ftsolid model as");
         Printf(false, "%Ba   %f%D%Lc%Fd%s union%E  "
                              "%f%D%Lc%Fd%s difference%E  "
-                             "%f%D%Lc%Fd%s%s%E  ",
+                             "%f%D%Lc%Fd%s assemble%E  ",
             &TextWindow::ScreenChangeGroupOption,
             Group::CombineAs::UNION,
             un ? RADIO_TRUE : RADIO_FALSE,
@@ -366,8 +365,7 @@ void TextWindow::ShowGroupInfo() {
             diff ? RADIO_TRUE : RADIO_FALSE,
             &TextWindow::ScreenChangeGroupOption,
             Group::CombineAs::ASSEMBLE,
-            asa ? (asy ? RADIO_TRUE : RADIO_FALSE) : " ",
-            asa ? " assemble" : "");
+            (asy ? RADIO_TRUE : RADIO_FALSE));
 
         if(g->type == Group::Type::EXTRUDE ||
            g->type == Group::Type::LATHE)
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 40b7436e..97f374d2 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -52,7 +52,9 @@ set(testsuite_SOURCES
     request/cubic_periodic/test.cpp
     request/datum_point/test.cpp
     request/line_segment/test.cpp
-    request/ttf_text/test.cpp)
+    request/ttf_text/test.cpp
+    group/translate_asy/test.cpp
+)
 
 add_executable(solvespace_testsuite
     ${testsuite_SOURCES})
diff --git a/test/group/translate_asy/normal.png b/test/group/translate_asy/normal.png
new file mode 100644
index 0000000000000000000000000000000000000000..c889c07e9fdde7e067f470600ca68c3be1421d82
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diff --git a/test/group/translate_asy/normal.slvs b/test/group/translate_asy/normal.slvs
new file mode 100644
index 00000000..2f013bcb
--- /dev/null
+++ b/test/group/translate_asy/normal.slvs
@@ -0,0 +1,2088 @@
+±²³SolveSpaceREVa
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+CurvePt 1 20.00000000000000000000 10.00000000000000000000 5.00000000000000000000
+CurvePt 1 20.00000000000000000000 10.00000000000000000000 -5.00000000000000000000
+AddCurve
+Curve 00000016 1 1 00000007 0000000c
+CCtrl 0 20.00000000000000000000 10.00000000000000000000 5.00000000000000000000 Weight 1.00000000000000000000
+CCtrl 1 20.00000000000000000000 0.00000000000000000000 5.00000000000000000000 Weight 1.00000000000000000000
+CurvePt 1 20.00000000000000000000 10.00000000000000000000 5.00000000000000000000
+CurvePt 1 20.00000000000000000000 0.00000000000000000000 5.00000000000000000000
+AddCurve
+Curve 00000017 1 1 00000008 0000000c
+CCtrl 0 20.00000000000000000000 10.00000000000000000000 -5.00000000000000000000 Weight 1.00000000000000000000
+CCtrl 1 20.00000000000000000000 0.00000000000000000000 -5.00000000000000000000 Weight 1.00000000000000000000
+CurvePt 1 20.00000000000000000000 10.00000000000000000000 -5.00000000000000000000
+CurvePt 1 20.00000000000000000000 0.00000000000000000000 -5.00000000000000000000
+AddCurve
+Curve 00000018 1 1 0000000c 00000009
+CCtrl 0 20.00000000000000000000 0.00000000000000000000 5.00000000000000000000 Weight 1.00000000000000000000
+CCtrl 1 20.00000000000000000000 0.00000000000000000000 -5.00000000000000000000 Weight 1.00000000000000000000
+CurvePt 1 20.00000000000000000000 0.00000000000000000000 5.00000000000000000000
+CurvePt 1 20.00000000000000000000 0.00000000000000000000 -5.00000000000000000000
+AddCurve
diff --git a/test/group/translate_asy/test.cpp b/test/group/translate_asy/test.cpp
new file mode 100644
index 00000000..92630135
--- /dev/null
+++ b/test/group/translate_asy/test.cpp
@@ -0,0 +1,22 @@
+#include "harness.h"
+
+TEST_CASE(normal_roundtrip) {
+    CHECK_LOAD("normal.slvs");
+    CHECK_RENDER_ISO("normal.png");
+    CHECK_SAVE("normal.slvs");
+}
+
+TEST_CASE(normal_inters) {
+    CHECK_LOAD("normal.slvs");
+
+    Group *g = SK.GetGroup(SS.GW.activeGroup);
+    SMesh *m = &g->displayMesh;
+
+    SEdgeList el = {};
+    bool inters, leaks;
+    SKdNode::From(m)->MakeCertainEdgesInto(&el,
+        EdgeKind::SELF_INTER, /*coplanarIsInter=*/false, &inters, &leaks);
+
+    // The assembly is supposed to interfere.
+    CHECK_TRUE(inters);
+}
diff --git a/test/harness.cpp b/test/harness.cpp
index a5fe01ea..2ebfd007 100644
--- a/test/harness.cpp
+++ b/test/harness.cpp
@@ -260,6 +260,18 @@ bool Test::Helper::CheckRender(const char *file, int line, const char *reference
     }
 }
 
+bool Test::Helper::CheckRenderXY(const char *file, int line, const char *fixture) {
+    SS.GW.projRight = Vector::From(1, 0, 0);
+    SS.GW.projUp    = Vector::From(0, 1, 0);
+    return CheckRender(file, line, fixture);
+}
+
+bool Test::Helper::CheckRenderIso(const char *file, int line, const char *fixture) {
+    SS.GW.projRight = Vector::From(0.707,  0.000, -0.707);
+    SS.GW.projUp    = Vector::From(-0.408, 0.816, -0.408);
+    return CheckRender(file, line, fixture);
+}
+
 // Avoid global constructors; using a global static vector instead of a local one
 // breaks MinGW for some obscure reason.
 static std::vector<Test::Case> *testCasesPtr;
diff --git a/test/harness.h b/test/harness.h
index f3e79282..74798e01 100644
--- a/test/harness.h
+++ b/test/harness.h
@@ -25,6 +25,8 @@ public:
     bool CheckLoad(const char *file, int line, const char *fixture);
     bool CheckSave(const char *file, int line, const char *reference);
     bool CheckRender(const char *file, int line, const char *fixture);
+    bool CheckRenderXY(const char *file, int line, const char *fixture);
+    bool CheckRenderIso(const char *file, int line, const char *fixture);
 };
 
 class Case {
@@ -54,4 +56,6 @@ using namespace SolveSpace;
 #define CHECK_SAVE(fixture) \
     do { if(!helper->CheckSave(__FILE__, __LINE__, fixture)) return; } while(0)
 #define CHECK_RENDER(reference) \
-    do { if(!helper->CheckRender(__FILE__, __LINE__, reference)) return; } while(0)
+    do { if(!helper->CheckRenderXY(__FILE__, __LINE__, reference)) return; } while(0)
+#define CHECK_RENDER_ISO(reference) \
+    do { if(!helper->CheckRenderIso(__FILE__, __LINE__, reference)) return; } while(0)