summaryrefslogtreecommitdiff
path: root/agg/inc/agg_trans_viewport.h
diff options
context:
space:
mode:
Diffstat (limited to 'agg/inc/agg_trans_viewport.h')
-rwxr-xr-xagg/inc/agg_trans_viewport.h304
1 files changed, 0 insertions, 304 deletions
diff --git a/agg/inc/agg_trans_viewport.h b/agg/inc/agg_trans_viewport.h
deleted file mode 100755
index b77a7204feb9..000000000000
--- a/agg/inc/agg_trans_viewport.h
+++ /dev/null
@@ -1,304 +0,0 @@
-//----------------------------------------------------------------------------
-// Anti-Grain Geometry - Version 2.3
-// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
-//
-// Permission to copy, use, modify, sell and distribute this software
-// is granted provided this copyright notice appears in all copies.
-// This software is provided "as is" without express or implied
-// warranty, and with no claim as to its suitability for any purpose.
-//
-//----------------------------------------------------------------------------
-// Contact: mcseem@antigrain.com
-// mcseemagg@yahoo.com
-// http://www.antigrain.com
-//----------------------------------------------------------------------------
-//
-// Viewport transformer - simple orthogonal conversions from world coordinates
-// to screen (device) ones.
-//
-//----------------------------------------------------------------------------
-
-#ifndef AGG_TRANS_VIEWPORT_INCLUDED
-#define AGG_TRANS_VIEWPORT_INCLUDED
-
-#include <string.h>
-#include "agg_basics.h"
-
-
-namespace agg
-{
-
- enum aspect_ratio_e
- {
- aspect_ratio_stretch,
- aspect_ratio_meet,
- aspect_ratio_slice
- };
-
-
- //----------------------------------------------------------trans_viewport
- class trans_viewport
- {
- public:
- //-------------------------------------------------------------------
- trans_viewport() :
- m_world_x1(0.0),
- m_world_y1(0.0),
- m_world_x2(1.0),
- m_world_y2(1.0),
- m_device_x1(0.0),
- m_device_y1(0.0),
- m_device_x2(1.0),
- m_device_y2(1.0),
- m_aspect(aspect_ratio_stretch),
- m_align_x(0.5),
- m_align_y(0.5),
- m_wx1(0.0),
- m_wy1(0.0),
- m_wx2(1.0),
- m_wy2(1.0),
- m_dx1(0.0),
- m_dy1(0.0),
- m_kx(1.0),
- m_ky(1.0)
- {}
-
- //-------------------------------------------------------------------
- void preserve_aspect_ratio(double alignx,
- double aligny,
- aspect_ratio_e aspect)
- {
- m_align_x = alignx;
- m_align_y = aligny;
- m_aspect = aspect;
- update();
- }
-
- //-------------------------------------------------------------------
- void device_viewport(double x1, double y1, double x2, double y2)
- {
- m_device_x1 = x1;
- m_device_y1 = y1;
- m_device_x2 = x2;
- m_device_y2 = y2;
- update();
- }
-
- //-------------------------------------------------------------------
- void world_viewport(double x1, double y1, double x2, double y2)
- {
- m_world_x1 = x1;
- m_world_y1 = y1;
- m_world_x2 = x2;
- m_world_y2 = y2;
- update();
- }
-
- //-------------------------------------------------------------------
- void device_viewport(double* x1, double* y1, double* x2, double* y2) const
- {
- *x1 = m_device_x1;
- *y1 = m_device_y1;
- *x2 = m_device_x2;
- *y2 = m_device_y2;
- }
-
- //-------------------------------------------------------------------
- void world_viewport(double* x1, double* y1, double* x2, double* y2) const
- {
- *x1 = m_world_x1;
- *y1 = m_world_y1;
- *x2 = m_world_x2;
- *y2 = m_world_y2;
- }
-
- //-------------------------------------------------------------------
- void world_viewport_actual(double* x1, double* y1,
- double* x2, double* y2) const
- {
- *x1 = m_wx1;
- *y1 = m_wy1;
- *x2 = m_wx2;
- *y2 = m_wy2;
- }
-
- //-------------------------------------------------------------------
- double align_x() const { return m_align_x; }
- double align_y() const { return m_align_y; }
- aspect_ratio_e aspect_ratio() const { return m_aspect; }
-
- //-------------------------------------------------------------------
- void transform(double* x, double* y) const
- {
- *x = (*x - m_wx1) * m_kx + m_dx1;
- *y = (*y - m_wy1) * m_ky + m_dy1;
- }
-
- //-------------------------------------------------------------------
- void inverse_transform(double* x, double* y) const
- {
- *x = (*x - m_dx1) / m_kx + m_wx1;
- *y = (*y - m_dy1) / m_ky + m_wy1;
- }
-
- //-------------------------------------------------------------------
- double scale_x() const
- {
- return m_kx;
- }
-
- //-------------------------------------------------------------------
- double scale_y() const
- {
- return m_ky;
- }
-
- //-------------------------------------------------------------------
- double scale() const
- {
- return (m_kx + m_ky) * 0.5;
- }
-
-
- //-------------------------------------------------------------------
- unsigned byte_size() const
- {
- return
- sizeof(m_world_x1) +
- sizeof(m_world_y1) +
- sizeof(m_world_x2) +
- sizeof(m_world_y2) +
- sizeof(m_device_x1) +
- sizeof(m_device_y1) +
- sizeof(m_device_x2) +
- sizeof(m_device_y2) +
- sizeof(m_aspect) +
- sizeof(m_align_x) +
- sizeof(m_align_y) +
- sizeof(m_wx1) +
- sizeof(m_wy1) +
- sizeof(m_wx2) +
- sizeof(m_wy2) +
- sizeof(m_dx1) +
- sizeof(m_dy1) +
- sizeof(m_kx) +
- sizeof(m_ky);
- }
-
- void serialize(int8u* ptr) const
- {
- memcpy(ptr, &m_world_x1, sizeof(m_world_x1)); ptr += sizeof(m_world_x1);
- memcpy(ptr, &m_world_y1, sizeof(m_world_y1)); ptr += sizeof(m_world_y1);
- memcpy(ptr, &m_world_x2, sizeof(m_world_x2)); ptr += sizeof(m_world_x2);
- memcpy(ptr, &m_world_y2, sizeof(m_world_y2)); ptr += sizeof(m_world_y2);
- memcpy(ptr, &m_device_x1, sizeof(m_device_x1)); ptr += sizeof(m_device_x1);
- memcpy(ptr, &m_device_y1, sizeof(m_device_y1)); ptr += sizeof(m_device_y1);
- memcpy(ptr, &m_device_x2, sizeof(m_device_x2)); ptr += sizeof(m_device_x2);
- memcpy(ptr, &m_device_y2, sizeof(m_device_y2)); ptr += sizeof(m_device_y2);
- memcpy(ptr, &m_aspect, sizeof(m_aspect)); ptr += sizeof(m_aspect);
- memcpy(ptr, &m_align_x, sizeof(m_align_x)); ptr += sizeof(m_align_x);
- memcpy(ptr, &m_align_y, sizeof(m_align_y)); ptr += sizeof(m_align_y);
- memcpy(ptr, &m_wx1, sizeof(m_wx1)); ptr += sizeof(m_wx1);
- memcpy(ptr, &m_wy1, sizeof(m_wy1)); ptr += sizeof(m_wy1);
- memcpy(ptr, &m_wx2, sizeof(m_wx2)); ptr += sizeof(m_wx2);
- memcpy(ptr, &m_wy2, sizeof(m_wy2)); ptr += sizeof(m_wy2);
- memcpy(ptr, &m_dx1, sizeof(m_dx1)); ptr += sizeof(m_dx1);
- memcpy(ptr, &m_dy1, sizeof(m_dy1)); ptr += sizeof(m_dy1);
- memcpy(ptr, &m_kx, sizeof(m_kx)); ptr += sizeof(m_kx);
- memcpy(ptr, &m_ky, sizeof(m_ky)); ptr += sizeof(m_ky);
- }
-
- void deserialize(const int8u* ptr)
- {
- memcpy(&m_world_x1, ptr, sizeof(m_world_x1)); ptr += sizeof(m_world_x1);
- memcpy(&m_world_y1, ptr, sizeof(m_world_y1)); ptr += sizeof(m_world_y1);
- memcpy(&m_world_x2, ptr, sizeof(m_world_x2)); ptr += sizeof(m_world_x2);
- memcpy(&m_world_y2, ptr, sizeof(m_world_y2)); ptr += sizeof(m_world_y2);
- memcpy(&m_device_x1, ptr, sizeof(m_device_x1)); ptr += sizeof(m_device_x1);
- memcpy(&m_device_y1, ptr, sizeof(m_device_y1)); ptr += sizeof(m_device_y1);
- memcpy(&m_device_x2, ptr, sizeof(m_device_x2)); ptr += sizeof(m_device_x2);
- memcpy(&m_device_y2, ptr, sizeof(m_device_y2)); ptr += sizeof(m_device_y2);
- memcpy(&m_aspect, ptr, sizeof(m_aspect)); ptr += sizeof(m_aspect);
- memcpy(&m_align_x, ptr, sizeof(m_align_x)); ptr += sizeof(m_align_x);
- memcpy(&m_align_y, ptr, sizeof(m_align_y)); ptr += sizeof(m_align_y);
- memcpy(&m_wx1, ptr, sizeof(m_wx1)); ptr += sizeof(m_wx1);
- memcpy(&m_wy1, ptr, sizeof(m_wy1)); ptr += sizeof(m_wy1);
- memcpy(&m_wx2, ptr, sizeof(m_wx2)); ptr += sizeof(m_wx2);
- memcpy(&m_wy2, ptr, sizeof(m_wy2)); ptr += sizeof(m_wy2);
- memcpy(&m_dx1, ptr, sizeof(m_dx1)); ptr += sizeof(m_dx1);
- memcpy(&m_dy1, ptr, sizeof(m_dy1)); ptr += sizeof(m_dy1);
- memcpy(&m_kx, ptr, sizeof(m_kx)); ptr += sizeof(m_kx);
- memcpy(&m_ky, ptr, sizeof(m_ky)); ptr += sizeof(m_ky);
- }
-
- private:
- void update();
-
- double m_world_x1;
- double m_world_y1;
- double m_world_x2;
- double m_world_y2;
- double m_device_x1;
- double m_device_y1;
- double m_device_x2;
- double m_device_y2;
- aspect_ratio_e m_aspect;
- double m_align_x;
- double m_align_y;
- double m_wx1;
- double m_wy1;
- double m_wx2;
- double m_wy2;
- double m_dx1;
- double m_dy1;
- double m_kx;
- double m_ky;
- };
-
-
-
- //-----------------------------------------------------------------------
- inline void trans_viewport::update()
- {
- double world_x1 = m_world_x1;
- double world_y1 = m_world_y1;
- double world_x2 = m_world_x2;
- double world_y2 = m_world_y2;
- double device_x1 = m_device_x1;
- double device_y1 = m_device_y1;
- double device_x2 = m_device_x2;
- double device_y2 = m_device_y2;
- if(m_aspect != aspect_ratio_stretch)
- {
- double d;
- m_kx = (device_x2 - device_x1) / (world_x2 - world_x1);
- m_ky = (device_y2 - device_y1) / (world_y2 - world_y1);
-
- if((m_aspect == aspect_ratio_meet) == (m_kx < m_ky))
- {
- d = (world_y2 - world_y1) * m_ky / m_kx;
- world_y1 += (world_y2 - world_y1 - d) * m_align_y;
- world_y2 = world_y1 + d;
- }
- else
- {
- d = (world_x2 - world_x1) * m_kx / m_ky;
- world_x1 += (world_x2 - world_x1 - d) * m_align_x;
- world_x2 = world_x1 + d;
- }
- }
- m_wx1 = world_x1;
- m_wy1 = world_y1;
- m_wx2 = world_x2;
- m_wy2 = world_y2;
- m_dx1 = device_x1;
- m_dy1 = device_y1;
- m_kx = (device_x2 - device_x1) / (world_x2 - world_x1);
- m_ky = (device_y2 - device_y1) / (world_y2 - world_y1);
- }
-
-
-}
-
-
-#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-20 17:59:30 +0000