florian/triangle_group_limit_set
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draw rotation orbit

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This commit is contained in:
Florian Stecker
2019-04-12 11:51:57 +02:00
parent 4daaf1ed7c
commit c43e9d89e0
4 changed files with 113 additions and 67 deletions
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21
main.c
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@@ -62,12 +62,12 @@ void computeRotationMatrix(DrawingContext *ctx, gsl_matrix *result, const char *
gsl_matrix *tmp = getTempMatrix(ctx->ws);
gsl_matrix **gen = getTempMatrices(ctx->ws, 3);
ERROR(strlen(type) != 2, "Invalid call of computeRotationMatrix()\n");
// ERROR(strlen(type) != 2, "Invalid call of computeRotationMatrix()\n");
initializeTriangleGenerators(gen, ctx->cartan);
gsl_matrix_set_identity(tmp);
multiply_right(tmp, gen[type[0]-'a'], ctx->ws);
multiply_right(tmp, gen[type[1]-'a'], ctx->ws);
for(int i = 0; i < strlen(type); i++)
multiply_right(tmp, gen[type[i]-'a'], ctx->ws);
rotation_frame(tmp, result, ctx->ws);
@@ -130,13 +130,18 @@ void updateMatrices(DrawingContext *ctx)
LOOP(i) angle[i] = M_PI*ctx->k[i]/ctx->p[i];
cartanMatrix(ctx->cartan, angle[0], angle[1], angle[2], ctx->parameter);
if(ctx->use_rotation_basis) {
// computeRotationMatrix(ctx, ctx->cob, "ac"); // and don't forget to invert!
computeBoxTransform(ctx, "abc", "cab", ctx->cob);
} else {
gsl_matrix *tmp = getTempMatrix(ctx->ws);
if(ctx->use_rotation_basis % 3 == 0) {
gsl_matrix_memcpy(ctx->cob, ctx->cartan); // is this a good choice of basis for any reason?
} else if(ctx->use_rotation_basis % 3 == 1) {
computeRotationMatrix(ctx, tmp, "ac");
invert(tmp, ctx->cob, ctx->ws);
} else {
computeBoxTransform(ctx, "abc", "cab", ctx->cob);
}
releaseTempMatrices(ctx->ws, 1);
}
void print(DrawingContext *screen)
@@ -249,7 +254,7 @@ int processEvent(GraphicsInfo *info, XEvent *ev)
TOGGLE(screen_context->show_limit);
break;
case 'R':
TOGGLE(screen_context->use_rotation_basis);
screen_context->use_rotation_basis++;
updateMatrices(screen_context);
computeLimitCurve(screen_context);
break;