305 lines
7 KiB
C++
305 lines
7 KiB
C++
// Copyright (c) 2007, Rodrigo Braz Monteiro
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
// * Neither the name of the Aegisub Group nor the names of its contributors
|
|
// may be used to endorse or promote products derived from this software
|
|
// without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
// POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
// -----------------------------------------------------------------------------
|
|
//
|
|
// AEGISUB
|
|
//
|
|
// Website: http://aegisub.cellosoft.com
|
|
// Contact: mailto:zeratul@cellosoft.com
|
|
//
|
|
|
|
|
|
///////////
|
|
// Headers
|
|
#include "config.h"
|
|
|
|
#include <wx/wxprec.h>
|
|
#include <wx/msgdlg.h>
|
|
#ifdef __APPLE__
|
|
#include <OpenGL/GL.h>
|
|
#include <OpenGL/glext.h>
|
|
#else
|
|
#include <GL/gl.h>
|
|
#include "gl/glext.h"
|
|
#endif
|
|
#include "gl_wrap.h"
|
|
#include "options.h"
|
|
|
|
|
|
//////////////////////////
|
|
// Extension get function
|
|
#ifdef __WIN32__
|
|
void* glGetProc(const char *str) { return wglGetProcAddress(str); }
|
|
#else
|
|
//void* glGetProc(const char *str) { return glXGetProcAddress((const GLubyte *)str); }
|
|
#define glGetProc(a) glXGetProcAddress((const GLubyte *)(a))
|
|
#endif
|
|
|
|
|
|
|
|
///////////////
|
|
// Constructor
|
|
OpenGLWrapper::OpenGLWrapper() {
|
|
r1 = g1 = b1 = a1 = 1.0f;
|
|
r2 = g2 = b2 = a2 = 1.0f;
|
|
lw = 1;
|
|
}
|
|
|
|
|
|
/////////////
|
|
// Draw line
|
|
void OpenGLWrapper::DrawLine(float x1,float y1,float x2,float y2) {
|
|
SetModeLine();
|
|
glBegin(GL_LINES);
|
|
glVertex2f(x1,y1);
|
|
glVertex2f(x2,y2);
|
|
glEnd();
|
|
}
|
|
|
|
|
|
/////////////
|
|
// Draw line
|
|
void OpenGLWrapper::DrawDashedLine(float x1,float y1,float x2,float y2,float step) {
|
|
float dist = sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1));
|
|
int steps = (int)((dist-20)/step);
|
|
double stepx = double(x2-x1)/steps;
|
|
double stepy = double(y2-y1)/steps;
|
|
for (int i=0;i<steps;i++) {
|
|
if (i % 2 == 0) DrawLine(x1+int(i*stepx),y1+int(i*stepy),x1+int((i+1)*stepx),y1+int((i+1)*stepy));
|
|
}
|
|
}
|
|
|
|
|
|
///////////////
|
|
// Draw circle
|
|
void OpenGLWrapper::DrawEllipse(float x,float y,float radiusX,float radiusY) {
|
|
DrawRing(x,y,radiusY,radiusY,radiusX/radiusY);
|
|
}
|
|
|
|
|
|
//////////////////
|
|
// Draw rectangle
|
|
void OpenGLWrapper::DrawRectangle(float x1,float y1,float x2,float y2) {
|
|
// Fill
|
|
if (a2 != 0.0) {
|
|
SetModeFill();
|
|
glBegin(GL_QUADS);
|
|
glVertex2f(x1,y1);
|
|
glVertex2f(x2,y1);
|
|
glVertex2f(x2,y2);
|
|
glVertex2f(x1,y2);
|
|
glEnd();
|
|
}
|
|
|
|
// Outline
|
|
if (a1 != 0.0) {
|
|
SetModeLine();
|
|
glBegin(GL_LINE_LOOP);
|
|
glVertex2f(x1,y1);
|
|
glVertex2f(x2,y1);
|
|
glVertex2f(x2,y2);
|
|
glVertex2f(x1,y2);
|
|
glEnd();
|
|
}
|
|
}
|
|
|
|
|
|
/////////////////
|
|
// Draw triangle
|
|
void OpenGLWrapper::DrawTriangle(float x1,float y1,float x2,float y2,float x3,float y3) {
|
|
// Fill
|
|
if (a2 != 0.0) {
|
|
SetModeFill();
|
|
glBegin(GL_TRIANGLES);
|
|
glVertex2f(x1,y1);
|
|
glVertex2f(x2,y2);
|
|
glVertex2f(x3,y3);
|
|
glEnd();
|
|
}
|
|
|
|
// Outline
|
|
if (a1 != 0.0) {
|
|
SetModeLine();
|
|
glBegin(GL_LINE_LOOP);
|
|
glVertex2f(x1,y1);
|
|
glVertex2f(x2,y2);
|
|
glVertex2f(x3,y3);
|
|
glEnd();
|
|
}
|
|
}
|
|
|
|
|
|
///////////////////////
|
|
// Draw ring (annulus)
|
|
void OpenGLWrapper::DrawRing(float x,float y,float r1,float r2,float ar,float arcStart,float arcEnd) {
|
|
// Make r1 bigger
|
|
if (r2 > r1) {
|
|
float temp = r1;
|
|
r1 = r2;
|
|
r2 = temp;
|
|
}
|
|
|
|
// Arc range
|
|
bool hasEnds = arcStart != arcEnd;
|
|
float pi = 3.1415926535897932384626433832795f;
|
|
arcEnd *= pi / 180.f;
|
|
arcStart *= pi / 180.f;
|
|
if (arcEnd <= arcStart) arcEnd += 2.0f*pi;
|
|
float range = arcEnd - arcStart;
|
|
|
|
// Math
|
|
int steps = int((r1 + r1*ar) * range / (2.0f*pi))*4;
|
|
if (steps < 12) steps = 12;
|
|
//float end = arcEnd;
|
|
float step = range/steps;
|
|
float curAngle = arcStart;
|
|
|
|
// Fill
|
|
if (a2 != 0.0) {
|
|
SetModeFill();
|
|
|
|
// Annulus
|
|
if (r1 != r2) {
|
|
glBegin(GL_QUADS);
|
|
for (int i=0;i<steps;i++) {
|
|
glVertex2f(x+sin(curAngle)*r1*ar,y+cos(curAngle)*r1);
|
|
glVertex2f(x+sin(curAngle)*r2*ar,y+cos(curAngle)*r2);
|
|
curAngle += step;
|
|
glVertex2f(x+sin(curAngle)*r2*ar,y+cos(curAngle)*r2);
|
|
glVertex2f(x+sin(curAngle)*r1*ar,y+cos(curAngle)*r1);
|
|
}
|
|
glEnd();
|
|
}
|
|
|
|
// Circle
|
|
else {
|
|
glBegin(GL_POLYGON);
|
|
for (int i=0;i<steps;i++) {
|
|
glVertex2f(x+sin(curAngle)*r1,y+cos(curAngle)*r1);
|
|
curAngle += step;
|
|
}
|
|
glEnd();
|
|
}
|
|
|
|
// Reset angle
|
|
curAngle = arcStart;
|
|
}
|
|
|
|
// Outlines
|
|
if (a1 != 0.0) {
|
|
// Outer
|
|
steps++;
|
|
SetModeLine();
|
|
glBegin(GL_LINE_STRIP);
|
|
for (int i=0;i<steps;i++) {
|
|
glVertex2f(x+sin(curAngle)*r1,y+cos(curAngle)*r1);
|
|
curAngle += step;
|
|
}
|
|
glEnd();
|
|
|
|
// Inner
|
|
if (r1 != r2) {
|
|
curAngle = arcStart;
|
|
glBegin(GL_LINE_STRIP);
|
|
for (int i=0;i<steps;i++) {
|
|
glVertex2f(x+sin(curAngle)*r2,y+cos(curAngle)*r2);
|
|
curAngle += step;
|
|
}
|
|
glEnd();
|
|
|
|
// End caps
|
|
if (hasEnds) {
|
|
glBegin(GL_LINES);
|
|
glVertex2f(x+sin(arcStart)*r1,y+cos(arcStart)*r1);
|
|
glVertex2f(x+sin(arcStart)*r2,y+cos(arcStart)*r2);
|
|
glVertex2f(x+sin(arcEnd)*r1,y+cos(arcEnd)*r1);
|
|
glVertex2f(x+sin(arcEnd)*r2,y+cos(arcEnd)*r2);
|
|
glEnd();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
///////////////////
|
|
// Set line colour
|
|
void OpenGLWrapper::SetLineColour(wxColour col,float alpha,int width) {
|
|
r1 = col.Red()/255.0f;
|
|
g1 = col.Green()/255.0f;
|
|
b1 = col.Blue()/255.0f;
|
|
a1 = alpha;
|
|
lw = width;
|
|
}
|
|
|
|
|
|
///////////////////
|
|
// Set fill colour
|
|
void OpenGLWrapper::SetFillColour(wxColour col,float alpha) {
|
|
r2 = col.Red()/255.0f;
|
|
g2 = col.Green()/255.0f;
|
|
b2 = col.Blue()/255.0f;
|
|
a2 = alpha;
|
|
}
|
|
|
|
|
|
////////
|
|
// Line
|
|
void OpenGLWrapper::SetModeLine() {
|
|
glColor4f(r1,g1,b1,a1);
|
|
glEnable(GL_BLEND);
|
|
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
|
|
glLineWidth(lw);
|
|
glEnable(GL_LINE_SMOOTH);
|
|
}
|
|
|
|
|
|
////////
|
|
// Fill
|
|
void OpenGLWrapper::SetModeFill() {
|
|
glColor4f(r2,g2,b2,a2);
|
|
if (a2 == 1.0f) glDisable(GL_BLEND);
|
|
else {
|
|
glEnable(GL_BLEND);
|
|
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
|
|
}
|
|
}
|
|
|
|
|
|
///////////////////////////
|
|
// Is extension supported?
|
|
bool OpenGLWrapper::IsExtensionSupported(const char *ext) {
|
|
char *extList = (char*) glGetString(GL_EXTENSIONS);
|
|
if (!extList) return false;
|
|
return strstr(extList, ext) != NULL;
|
|
}
|
|
|
|
|
|
|
|
/////////
|
|
// Mutex
|
|
wxMutex OpenGLWrapper::glMutex;
|