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SF.net SVN: matplotlib:[7628] trunk/matplotlib/src/_backend_agg.cpp
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From: <md...@us...> - 2009-09-02 19:30:44
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Revision: 7628
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=7628&view=rev
Author: mdboom
Date: 2009-09-02 19:30:30 +0000 (Wed, 02 Sep 2009)
Log Message:
-----------
Improve memory management and error handling in draw_gouraud_triangle(s) in the Agg backend.
Modified Paths:
--------------
trunk/matplotlib/src/_backend_agg.cpp
Modified: trunk/matplotlib/src/_backend_agg.cpp
===================================================================
--- trunk/matplotlib/src/_backend_agg.cpp 2009-09-02 00:44:16 UTC (rev 7627)
+++ trunk/matplotlib/src/_backend_agg.cpp 2009-09-02 19:30:30 UTC (rev 7628)
@@ -1094,14 +1094,14 @@
throw Py::ValueError("Offsets array must be Nx2");
}
- PyArrayObject* facecolors = (PyArrayObject*)PyArray_FromObject
+ facecolors = (PyArrayObject*)PyArray_FromObject
(facecolors_obj.ptr(), PyArray_DOUBLE, 1, 2);
if (!facecolors ||
(PyArray_NDIM(facecolors) == 1 && PyArray_DIM(facecolors, 0) != 0) ||
(PyArray_NDIM(facecolors) == 2 && PyArray_DIM(facecolors, 1) != 4))
throw Py::ValueError("Facecolors must be a Nx4 numpy array or empty");
- PyArrayObject* edgecolors = (PyArrayObject*)PyArray_FromObject
+ edgecolors = (PyArrayObject*)PyArray_FromObject
(edgecolors_obj.ptr(), PyArray_DOUBLE, 1, 2);
if (!edgecolors ||
(PyArray_NDIM(edgecolors) == 1 && PyArray_DIM(edgecolors, 0) != 0) ||
@@ -1459,13 +1459,14 @@
RendererAgg::_draw_gouraud_triangle(const GCAgg& gc,
const double* points, const double* colors, agg::trans_affine trans) {
- typedef agg::rgba8 color_t;
- typedef agg::span_gouraud_rgba<color_t> span_gen_t;
- typedef agg::span_allocator<color_t> span_alloc_t;
+ typedef agg::rgba8 color_t;
+ typedef agg::span_gouraud_rgba<color_t> span_gen_t;
+ typedef agg::span_allocator<color_t> span_alloc_t;
theRasterizer.reset_clipping();
rendererBase.reset_clipping(true);
set_clipbox(gc.cliprect, theRasterizer);
+ /* TODO: Support clip paths */
trans *= agg::trans_affine_scaling(1.0, -1.0);
trans *= agg::trans_affine_translation(0.0, (double)height);
@@ -1492,8 +1493,8 @@
0.5);
theRasterizer.add_path(span_gen);
- agg::render_scanlines_aa(
- theRasterizer, slineP8, rendererBase, span_alloc, span_gen);
+
+ agg::render_scanlines_aa(theRasterizer, slineP8, rendererBase, span_alloc, span_gen);
}
Py::Object
@@ -1501,36 +1502,40 @@
_VERBOSE("RendererAgg::draw_gouraud_triangle");
args.verify_length(4);
- //segments, trans, clipbox, colors, linewidths, antialiaseds
GCAgg gc(args[0], dpi);
Py::Object points_obj = args[1];
Py::Object colors_obj = args[2];
agg::trans_affine trans = py_to_agg_transformation_matrix(args[3].ptr());
- PyArrayObject* points = (PyArrayObject*)PyArray_ContiguousFromAny
- (points_obj.ptr(), PyArray_DOUBLE, 2, 2);
- if (!points ||
- PyArray_DIM(points, 0) != 3 || PyArray_DIM(points, 1) != 2)
- throw Py::ValueError("points must be a 3x2 numpy array");
+ PyArrayObject* points = NULL;
+ PyArrayObject* colors = NULL;
- PyArrayObject* colors = (PyArrayObject*)PyArray_ContiguousFromAny
- (colors_obj.ptr(), PyArray_DOUBLE, 2, 2);
- if (!colors ||
- PyArray_DIM(colors, 0) != 3 || PyArray_DIM(colors, 1) != 4)
- throw Py::ValueError("colors must be a 3x4 numpy array");
+ try {
+ points = (PyArrayObject*)PyArray_ContiguousFromAny
+ (points_obj.ptr(), PyArray_DOUBLE, 2, 2);
+ if (!points ||
+ PyArray_DIM(points, 0) != 3 || PyArray_DIM(points, 1) != 2) {
+ throw Py::ValueError("points must be a 3x2 numpy array");
+ }
- try {
+ colors = (PyArrayObject*)PyArray_ContiguousFromAny
+ (colors_obj.ptr(), PyArray_DOUBLE, 2, 2);
+ if (!colors ||
+ PyArray_DIM(colors, 0) != 3 || PyArray_DIM(colors, 1) != 4) {
+ throw Py::ValueError("colors must be a 3x4 numpy array");
+ }
+
_draw_gouraud_triangle(
gc, (double*)PyArray_DATA(points), (double*)PyArray_DATA(colors), trans);
} catch (...) {
- Py_DECREF(points);
- Py_DECREF(colors);
+ Py_XDECREF(points);
+ Py_XDECREF(colors);
throw;
}
- Py_DECREF(points);
- Py_DECREF(colors);
+ Py_XDECREF(points);
+ Py_XDECREF(colors);
return Py::Object();
}
@@ -1544,42 +1549,45 @@
typedef agg::span_gouraud_rgba<color_t> span_gen_t;
typedef agg::span_allocator<color_t> span_alloc_t;
- //segments, trans, clipbox, colors, linewidths, antialiaseds
GCAgg gc(args[0], dpi);
Py::Object points_obj = args[1];
Py::Object colors_obj = args[2];
agg::trans_affine trans = py_to_agg_transformation_matrix(args[3].ptr());
- PyArrayObject* points = (PyArrayObject*)PyArray_ContiguousFromAny
- (points_obj.ptr(), PyArray_DOUBLE, 3, 3);
- if (!points ||
- PyArray_DIM(points, 1) != 3 || PyArray_DIM(points, 2) != 2)
- throw Py::ValueError("points must be a Nx3x2 numpy array");
+ PyArrayObject* points = NULL;
+ PyArrayObject* colors = NULL;
- PyArrayObject* colors = (PyArrayObject*)PyArray_ContiguousFromAny
- (colors_obj.ptr(), PyArray_DOUBLE, 3, 3);
- if (!colors ||
- PyArray_DIM(colors, 1) != 3 || PyArray_DIM(colors, 2) != 4)
- throw Py::ValueError("colors must be a Nx3x4 numpy array");
+ try {
+ points = (PyArrayObject*)PyArray_ContiguousFromAny
+ (points_obj.ptr(), PyArray_DOUBLE, 3, 3);
+ if (!points ||
+ PyArray_DIM(points, 1) != 3 || PyArray_DIM(points, 2) != 2) {
+ throw Py::ValueError("points must be a Nx3x2 numpy array");
+ }
- if (PyArray_DIM(points, 0) != PyArray_DIM(colors, 0)) {
- throw Py::ValueError("points and colors arrays must be the same length");
- }
+ colors = (PyArrayObject*)PyArray_ContiguousFromAny
+ (colors_obj.ptr(), PyArray_DOUBLE, 3, 3);
+ if (!colors ||
+ PyArray_DIM(colors, 1) != 3 || PyArray_DIM(colors, 2) != 4) {
+ throw Py::ValueError("colors must be a Nx3x4 numpy array");
+ }
- try {
+ if (PyArray_DIM(points, 0) != PyArray_DIM(colors, 0)) {
+ throw Py::ValueError("points and colors arrays must be the same length");
+ }
+
for (int i = 0; i < PyArray_DIM(points, 0); ++i) {
- _draw_gouraud_triangle(
- gc, (double*)PyArray_GETPTR1(points, i), (double*)PyArray_GETPTR1(colors, i), trans);
+ _draw_gouraud_triangle(gc, (double*)PyArray_GETPTR1(points, i), (double*)PyArray_GETPTR1(colors, i), trans);
}
} catch (...) {
- Py_DECREF(points);
- Py_DECREF(colors);
+ Py_XDECREF(points);
+ Py_XDECREF(colors);
throw;
}
- Py_DECREF(points);
- Py_DECREF(colors);
+ Py_XDECREF(points);
+ Py_XDECREF(colors);
return Py::Object();
}
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