suzanne.soy/solvespace
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Add a configuration option to hide the back faces; that gets rid of

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stray red pixels sometimes, if the mesh is leaky or the graphics
card isn't perfect.

[git-p4: depot-paths = "//depot/solvespace/": change = 1864]
This commit is contained in:
Jonathan Westhues 2008-08-11 02:56:08 -08:00
parent 2a420e8400
commit 96f5663d6e
5 changed files with 27 additions and 3 deletions
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11
draw.cpp
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@ -960,9 +960,14 @@ void GraphicsWindow::Paint(int w, int h) {
GLfloat ld1[4] = { (GLfloat)ld.x, (GLfloat)ld.y, (GLfloat)ld.z, 0 };
glLightfv(GL_LIGHT1, GL_POSITION, ld1);
// For debugging, draw the backs of the triangles in red, so that we
// notice when a shell is open
glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, 1);
if(SS.drawBackFaces) {
// For debugging, draw the backs of the triangles in red, so that we
// notice when a shell is open
glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, 1);
} else {
glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, 0);
}
GLfloat ambient[4] = { 0.4f, 0.4f, 0.4f, 1.0f };
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);

4
solvespace.cpp
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@ -49,6 +49,8 @@ void SolveSpace::Init(char *cmdLine) {
edgeColor = CnfThawDWORD(RGB(0, 0, 0), "EdgeColor");
// Export scale factor
exportScale = CnfThawFloat(1.0f, "ExportScale");
// Draw back faces of triangles (when mesh is leaky/self-intersecting)
drawBackFaces = CnfThawDWORD(1, "DrawBackFaces");
// Recent files menus
for(i = 0; i < MAX_RECENT; i++) {
char name[100];
@ -107,6 +109,8 @@ void SolveSpace::Exit(void) {
CnfFreezeDWORD(edgeColor, "EdgeColor");
// Export scale (a float, stored as a DWORD)
CnfFreezeFloat(exportScale, "ExportScale");
// Draw back faces of triangles (when mesh is leaky/self-intersecting)
CnfFreezeDWORD(drawBackFaces, "DrawBackFaces");
ExitNow();
}

1
solvespace.h
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@ -370,6 +370,7 @@ public:
double cameraTangent;
DWORD edgeColor;
float exportScale;
int drawBackFaces;
int CircleSides(double r);
typedef enum {

12
textscreens.cpp
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@ -595,6 +595,10 @@ void TextWindow::ScreenChangeExportScale(int link, DWORD v) {
ShowTextEditControl(59, 3, str);
SS.TW.edit.meaning = EDIT_EXPORT_SCALE;
}
void TextWindow::ScreenChangeBackFaces(int link, DWORD v) {
SS.drawBackFaces = !SS.drawBackFaces;
InvalidateGraphics();
}
void TextWindow::ShowConfiguration(void) {
int i;
Printf(true, "%Ft material color-(r, g, b)");
@ -648,6 +652,14 @@ void TextWindow::ShowConfiguration(void) {
Printf(false, "%Ba %3 %Fl%Ll%f%D[change]%E",
(double)SS.exportScale,
&ScreenChangeExportScale, 0);
Printf(false, "");
Printf(false, "%Ft draw back faces: "
"%Fh%f%Ll%s%E%Fs%s%E / %Fh%f%Ll%s%E%Fs%s%E",
&ScreenChangeBackFaces,
(SS.drawBackFaces ? "" : "yes"), (SS.drawBackFaces ? "yes" : ""),
&ScreenChangeBackFaces,
(!SS.drawBackFaces ? "" : "no"), (!SS.drawBackFaces ? "no" : ""));
}
//-----------------------------------------------------------------------------

2
ui.h
View File

@ -139,6 +139,8 @@ public:
static void ScreenShowConfiguration(int link, DWORD v);
static void ScreenGoToWebsite(int link, DWORD v);
static void ScreenChangeBackFaces(int link, DWORD v);
static void ScreenStepDimSteps(int link, DWORD v);
static void ScreenStepDimFinish(int link, DWORD v);
static void ScreenStepDimGo(int link, DWORD v);